Pub Date : 2024-10-22DOI: 10.1016/j.mtsust.2024.101018
Abderrazzak Boudouma, Omar Ait Layachi, Hala Hrir, Meryem Nini, yousra Fariat, Imane Battiwa, Asmaa Moujib, Mohamed Nohair, Elmati Khoumri
Cu2ZnSnS4(CZTS) kesterite stands out for its high absorption coefficient and direct optical bandgap, making it a promising absorber material for thin-film photovoltaic cells, combining high efficiency and low cost. CZTSSe-based solar cells currently achieve conversion efficiencies of 15.1%. With more than 3700 publications since 1988, mainly focusing on fabricating CZTS thin films by various techniques, this study looks more specifically at the synthesis of CZTS by electrodeposition. This method recently achieved an efficiency of 8.7%. This approach stands out for its ability to deposit composite metal alloys on large surfaces with controlled thickness. The study explores the impact of synthesis parameters on the physical, chemical, and morphological properties of CZTS films and their influence on solar cell efficiency. Finally, current challenges and prospects are discussed, opening perspectives for advances in synthesizing and applying CZTS thin films for photovoltaic technologies.
{"title":"Electrodeposition synthesis of Cu2ZnSnS4(CZTS) thin films as a promising material for photovoltaic cells: Fundamentals, methods, and future prospects - A comprehensive review","authors":"Abderrazzak Boudouma, Omar Ait Layachi, Hala Hrir, Meryem Nini, yousra Fariat, Imane Battiwa, Asmaa Moujib, Mohamed Nohair, Elmati Khoumri","doi":"10.1016/j.mtsust.2024.101018","DOIUrl":"10.1016/j.mtsust.2024.101018","url":null,"abstract":"<div><div>Cu<sub>2</sub>ZnSnS<sub>4</sub>(CZTS) kesterite stands out for its high absorption coefficient and direct optical bandgap, making it a promising absorber material for thin-film photovoltaic cells, combining high efficiency and low cost. CZTSSe-based solar cells currently achieve conversion efficiencies of 15.1%. With more than 3700 publications since 1988, mainly focusing on fabricating CZTS thin films by various techniques, this study looks more specifically at the synthesis of CZTS by electrodeposition. This method recently achieved an efficiency of 8.7%. This approach stands out for its ability to deposit composite metal alloys on large surfaces with controlled thickness. The study explores the impact of synthesis parameters on the physical, chemical, and morphological properties of CZTS films and their influence on solar cell efficiency. Finally, current challenges and prospects are discussed, opening perspectives for advances in synthesizing and applying CZTS thin films for photovoltaic technologies.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101018"},"PeriodicalIF":7.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.mtsust.2024.101019
Shiyao Gu , Saad Ullah , Firoz Khan , Xiaoxia Wang , Ping Liu , Shi-e Yang , Yongsheng Chen
In recent years, antimony-based chalcogenides have gained attention as exciting prospects for next-generation thin-film photovoltaics. Binary Sb2S3 thin films are up-and-coming for optoelectronic applications due to their remarkable stability, simple composition, suitable charge transport, and facile and cost-effective synthesis. Contrary to other well-established chalcogenide-based solar cells, the power conversion efficiency (PCE) of Sb2S3 solar cells is significantly lower. In light of this, it is imperative to perform a thorough summary and exploration of the performance of Sb2S3 thin-film solar cells, identify the primary issues, and develop viable solutions to enhance their PCE. This review thoroughly analyzed Sb2S3 photovoltaic devices, revealing their significant advances and challenges in the last decade. This review thoroughly analyzes and discusses the most recent developments in Sb2S3 solar cells, including their properties, fabrication processes, and engineering strategies established to improve efficiency. In conclusion, the outlook and prospects for the further advancement of Sb2S3 solar cells are discussed.
{"title":"Recent advances and perspectives on Sb2S3 thin-film solar cells","authors":"Shiyao Gu , Saad Ullah , Firoz Khan , Xiaoxia Wang , Ping Liu , Shi-e Yang , Yongsheng Chen","doi":"10.1016/j.mtsust.2024.101019","DOIUrl":"10.1016/j.mtsust.2024.101019","url":null,"abstract":"<div><div>In recent years, antimony-based chalcogenides have gained attention as exciting prospects for next-generation thin-film photovoltaics. Binary Sb<sub>2</sub>S<sub>3</sub> thin films are up-and-coming for optoelectronic applications due to their remarkable stability, simple composition, suitable charge transport, and facile and cost-effective synthesis. Contrary to other well-established chalcogenide-based solar cells, the power conversion efficiency (PCE) of Sb<sub>2</sub>S<sub>3</sub> solar cells is significantly lower. In light of this, it is imperative to perform a thorough summary and exploration of the performance of Sb<sub>2</sub>S<sub>3</sub> thin-film solar cells, identify the primary issues, and develop viable solutions to enhance their PCE. This review thoroughly analyzed Sb<sub>2</sub>S<sub>3</sub> photovoltaic devices, revealing their significant advances and challenges in the last decade. This review thoroughly analyzes and discusses the most recent developments in Sb<sub>2</sub>S<sub>3</sub> solar cells, including their properties, fabrication processes, and engineering strategies established to improve efficiency. In conclusion, the outlook and prospects for the further advancement of Sb<sub>2</sub>S<sub>3</sub> solar cells are discussed.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101019"},"PeriodicalIF":7.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.mtsust.2024.101020
Ziqi Zhou , Yichao Jin , Hongwei Liu , Chunjing Su , Huaiyong Zhu , Jun Huang , Sarina Sarina
2,5-Furandicarboxylic acid (FDCA), an excellent precursor for producing value-added green polymers, has recently garnered much attention. Traditional methods for oxidizing 5-Hydroxymethylfurfural (HMF) to FDCA typically require harsh conditions, such as high pressure, high temperature, and non-eco-friendly reactants, making them neither green nor economical. In this study, we present a novel photocatalytic system utilizing a plasmonic antenna effect to enhance Pd clusters supported on ceria (CeO2). This system drives the transformation from HMF to FDCA under ambient conditions, achieving an impressive yield of over 90% within 4 h under green light irradiation. Notably, the palladium content in this system is minimal. This discovery could pave the way for the development of new photocatalytic systems with varied nanostructures or elemental compositions for efficient chemical reactions.
{"title":"Plasmonic antenna enhancement on Pd cluster towards high selective FDCA production","authors":"Ziqi Zhou , Yichao Jin , Hongwei Liu , Chunjing Su , Huaiyong Zhu , Jun Huang , Sarina Sarina","doi":"10.1016/j.mtsust.2024.101020","DOIUrl":"10.1016/j.mtsust.2024.101020","url":null,"abstract":"<div><div>2,5-Furandicarboxylic acid (FDCA), an excellent precursor for producing value-added green polymers, has recently garnered much attention. Traditional methods for oxidizing 5-Hydroxymethylfurfural (HMF) to FDCA typically require harsh conditions, such as high pressure, high temperature, and non-eco-friendly reactants, making them neither green nor economical. In this study, we present a novel photocatalytic system utilizing a plasmonic antenna effect to enhance Pd clusters supported on ceria (CeO<sub>2</sub>). This system drives the transformation from HMF to FDCA under ambient conditions, achieving an impressive yield of over 90% within 4 h under green light irradiation. Notably, the palladium content in this system is minimal. This discovery could pave the way for the development of new photocatalytic systems with varied nanostructures or elemental compositions for efficient chemical reactions.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101020"},"PeriodicalIF":7.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.mtsust.2024.101021
Adeeb Hayyan , Sharifah Shahira Syed Putra , M.K. Chow , Yousef Mohammed Alanazi , Jehad Saleh , Inas M. AlNashef , Bhaskar Sen Gupta
In this study, a deep eutectic solvent (DES) from benzenesulfonic acid and choline chloride (BZSA-ChCl-DES) was prepared for the treatment of high free fatty acids (FFA) in acidic crude palm oil (ACPO). The DES was impregnated into activated carbon (AC-DES) to produce a supported catalyst used in a trickle bed reactor (TBR) for FFA esterification. Under optimal conditions, using 8 g of AC-DES at 60 °C, with ACPO and methanol flow rates of 1 mL/min and 4 mL/min, respectively, the TBR successfully treated 3.5 L of ACPO. A batch reactor, used for comparison, showed that the continuous TBR process required less catalyst per gram of treated oil (2.87 mg catalyst/g) which can enhance the recyclability. Moreover, the continuous process could sustain up to five recycle runs that can treat 1.5 L under optimal conditions (3.5 wt% catalyst dosage, 10:1 M ratio, 60 °C reaction temperature, and 30 min). This approach presents a promising continuous approach for converting high FFA to fatty acid methyl ester (FAME) for biodiesel production.
{"title":"Treatment of acidic crude palm oil using supported benzenesulfonic acid-based deep eutectic solvents in trickle bed reactor","authors":"Adeeb Hayyan , Sharifah Shahira Syed Putra , M.K. Chow , Yousef Mohammed Alanazi , Jehad Saleh , Inas M. AlNashef , Bhaskar Sen Gupta","doi":"10.1016/j.mtsust.2024.101021","DOIUrl":"10.1016/j.mtsust.2024.101021","url":null,"abstract":"<div><div>In this study, a deep eutectic solvent (DES) from benzenesulfonic acid and choline chloride (BZSA-ChCl-DES) was prepared for the treatment of high free fatty acids (FFA) in acidic crude palm oil (ACPO). The DES was impregnated into activated carbon (AC-DES) to produce a supported catalyst used in a trickle bed reactor (TBR) for FFA esterification. Under optimal conditions, using 8 g of AC-DES at 60 °C, with ACPO and methanol flow rates of 1 mL/min and 4 mL/min, respectively, the TBR successfully treated 3.5 L of ACPO. A batch reactor, used for comparison, showed that the continuous TBR process required less catalyst per gram of treated oil (2.87 mg catalyst/g) which can enhance the recyclability. Moreover, the continuous process could sustain up to five recycle runs that can treat 1.5 L under optimal conditions (3.5 wt% catalyst dosage, 10:1 M ratio, 60 °C reaction temperature, and 30 min). This approach presents a promising continuous approach for converting high FFA to fatty acid methyl ester (FAME) for biodiesel production.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101021"},"PeriodicalIF":7.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.mtsust.2024.101015
Maroua Saadaoui , Assem T. Mohamed , Abdul Hakeem Anwer , Siham Y. Al-Qaradawi , Mazen Khaled , Abdelbaki Benamor
In the current work, an innovative eco-friendly sensor using ceria integrated cobalt oxide nanosheets immobilized on LCD monitor (Ce@Co-EcoR) recycled from E-waste is presented. The Ce@Co-EcoR nanocomposite was thoroughly investigated using appropriate characterization techniques. This nanostructured electrode was employed to construct an electrochemical sensor to detect mercury. It showed a very low detection limit of 2.8 ppb, a wide detection ranges from 16 to 620 ppb, and a good sensitivity of 158.28 μA cm2.ppm−1. The sensor applicability was verified by performing interference, repeatability, stability studies. It was also applied to control the purity of sea water. This work underscores the potential of incorporating recycled materials onto sensor technology, not only to control environmental pollution, but also to promote sustainable practices in scientific innovation.
{"title":"Revitalizing E-waste: Eco-friendly electrochemical sensor for Hg(II) detection enhanced by oxygen vacancy in metal oxide nanostructures based on recycled LCD","authors":"Maroua Saadaoui , Assem T. Mohamed , Abdul Hakeem Anwer , Siham Y. Al-Qaradawi , Mazen Khaled , Abdelbaki Benamor","doi":"10.1016/j.mtsust.2024.101015","DOIUrl":"10.1016/j.mtsust.2024.101015","url":null,"abstract":"<div><div>In the current work, an innovative eco-friendly sensor using ceria integrated cobalt oxide nanosheets immobilized on LCD monitor (Ce@Co-EcoR) recycled from E-waste is presented. The Ce@Co-EcoR nanocomposite was thoroughly investigated using appropriate characterization techniques. This nanostructured electrode was employed to construct an electrochemical sensor to detect mercury. It showed a very low detection limit of 2.8 ppb, a wide detection ranges from 16 to 620 ppb, and a good sensitivity of 158.28 μA cm<sup>2</sup>.ppm<sup>−1</sup>. The sensor applicability was verified by performing interference, repeatability, stability studies. It was also applied to control the purity of sea water. This work underscores the potential of incorporating recycled materials onto sensor technology, not only to control environmental pollution, but also to promote sustainable practices in scientific innovation.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101015"},"PeriodicalIF":7.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-21DOI: 10.1016/j.mtsust.2024.101014
Aisha R. Al-Marhabi , Reda M. El-Shishtawy , Khalid O. Al-Footy
The constant rise in global energy usage has depleted fossil fuel reserves. Therefore, researchers explored solar energy as an alternative energy reserve due to the need for limitless power. In particular, dye-sensitized solar cells (DSSCs) hold great promise in meeting the growing demand for renewable energy supplies due to a low-cost and environmentally friendly photovoltaic technology for harnessing solar energy. The sensitizers' molecular engineering is essential for accomplishing high conversion efficiencies. Numerous research activities have been concentrated on diazine scaffolds (substituted diazines, benzodiazines, and fused heterocyclic diazines) among the many different types of sensitizers because of their strong absorption bands in the visible light region, electron-withdrawing ability, and the ease of modifications that can be made to their skeleton. This review classified the diazines according to their scaffolds (pyridazine, pyrimidine, pyrazine). The improvements to the performance of metal-free DSSCs according to the molecular engineering of the sensitizer are discussed. The effect of the donors, auxiliary donors, auxiliary acceptors, mono or di-anchoring groups, and incorporation of π-spacers or alkyl chains in the sensitizer molecule on the photovoltaic performance are discussed. The synthetic approaches, optical properties in solution, and their photovoltaic performances in DSSCs were also summarized. The present work aims to give readers a distinct picture of the subject and enlighten the researchers by developing future ideas about designing sensitizers employing other heterocyclic scaffolds with electron-deficient properties to achieve an excellent solar energy conversion.
{"title":"An overview of metal-free diazine-based dyes for dye-sensitized solar cells: Synthesis, optical, and photovoltaic properties","authors":"Aisha R. Al-Marhabi , Reda M. El-Shishtawy , Khalid O. Al-Footy","doi":"10.1016/j.mtsust.2024.101014","DOIUrl":"10.1016/j.mtsust.2024.101014","url":null,"abstract":"<div><div>The constant rise in global energy usage has depleted fossil fuel reserves. Therefore, researchers explored solar energy as an alternative energy reserve due to the need for limitless power. In particular, dye-sensitized solar cells (DSSCs) hold great promise in meeting the growing demand for renewable energy supplies due to a low-cost and environmentally friendly photovoltaic technology for harnessing solar energy. The sensitizers' molecular engineering is essential for accomplishing high conversion efficiencies. Numerous research activities have been concentrated on diazine scaffolds (substituted diazines, benzodiazines, and fused heterocyclic diazines) among the many different types of sensitizers because of their strong absorption bands in the visible light region, electron-withdrawing ability, and the ease of modifications that can be made to their skeleton. This review classified the diazines according to their scaffolds (pyridazine, pyrimidine, pyrazine). The improvements to the performance of metal-free DSSCs according to the molecular engineering of the sensitizer are discussed. The effect of the donors, auxiliary donors, auxiliary acceptors, mono or di-anchoring groups, and incorporation of π-spacers or alkyl chains in the sensitizer molecule on the photovoltaic performance are discussed. The synthetic approaches, optical properties in solution, and their photovoltaic performances in DSSCs were also summarized. The present work aims to give readers a distinct picture of the subject and enlighten the researchers by developing future ideas about designing sensitizers employing other heterocyclic scaffolds with electron-deficient properties to achieve an excellent solar energy conversion.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101014"},"PeriodicalIF":7.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-18DOI: 10.1016/j.mtsust.2024.101011
Neda Kalantari , Nagihan Delibaş , Aligholi Niaei
This overview delves into the crucial role of additives in bolstering the performance and robustness of Halide Perovskite Solar Cells (PSCs). Categorizing both organic and inorganic additives, the study explores their substantial impact on enhancing the thermal and UV-light stability of PSCs. Various strategies such as solvent manipulation, doping, alloying, and nucleation control are discussed for optimizing the stability of PSCs. Additionally, focusing on improving hole and electron transporting layers, interface protections, and energy band configurations aids in augmenting the efficiency of PSCs. The employment of carbon electrodes and encapsulation techniques emerges as effective methods to bolster thermal stability in PSCs. Furthermore, a profound understanding of defect properties and interface materials is pivotal for augmenting the stability and durability of PSCs. The review encapsulates experimental methods, characterization techniques, and underlying mechanisms behind the additive-induced enhancements in PSCs. Moreover, the article addresses the challenges and future directions in utilizing inorganic additives to elevate the efficiency and stability of PSCs, providing a comprehensive overview of the current state of research and proposing avenues for further advancements in the realm of inorganic additives for Halide Perovskite Solar Cells.
{"title":"Unveiling the potential of additives in optimizing halide perovskite solar cells performance and reliability","authors":"Neda Kalantari , Nagihan Delibaş , Aligholi Niaei","doi":"10.1016/j.mtsust.2024.101011","DOIUrl":"10.1016/j.mtsust.2024.101011","url":null,"abstract":"<div><div>This overview delves into the crucial role of additives in bolstering the performance and robustness of Halide Perovskite Solar Cells (PSCs). Categorizing both organic and inorganic additives, the study explores their substantial impact on enhancing the thermal and UV-light stability of PSCs. Various strategies such as solvent manipulation, doping, alloying, and nucleation control are discussed for optimizing the stability of PSCs. Additionally, focusing on improving hole and electron transporting layers, interface protections, and energy band configurations aids in augmenting the efficiency of PSCs. The employment of carbon electrodes and encapsulation techniques emerges as effective methods to bolster thermal stability in PSCs. Furthermore, a profound understanding of defect properties and interface materials is pivotal for augmenting the stability and durability of PSCs. The review encapsulates experimental methods, characterization techniques, and underlying mechanisms behind the additive-induced enhancements in PSCs. Moreover, the article addresses the challenges and future directions in utilizing inorganic additives to elevate the efficiency and stability of PSCs, providing a comprehensive overview of the current state of research and proposing avenues for further advancements in the realm of inorganic additives for Halide Perovskite Solar Cells.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101011"},"PeriodicalIF":7.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-17DOI: 10.1016/j.mtsust.2024.101008
J. Olea , J. Gonzalo , J. Siegel , A.F. Braña , G. Godoy-Pérez , R. Benítez-Fernández , D. Caudevilla , S. Algaidy , F. Pérez-Zenteno , S. Duarte-Cano , A. del Prado , E. García-Hemme , R. García-Hernansanz , D. Pastor , E. San-Andrés , I. Mártil
Supersaturated GaP is of interest for the photovoltaic field since optical transitions at energies below the bandgap (2.26 eV) could enhance the overall device efficiency up to theoretically 60%. We have previously demonstrated that Ti supersaturated GaP can be obtained by means of ion implantation and pulsed-laser melting with high structural quality and measured its below-bandgap photoconductivity. In this work we report the first results of a GaP:Ti based photovoltaic device. We have fabricated and measured photovoltaic devices with a GaP:Ti absorber layer showing enhanced external quantum efficiency at wavelengths above 550 nm. Also, we have measured the absorption coefficient (around 104 cm−1) and refractive index of this absorber layer. Finally, current-voltage curves in darkness were measured and analyzed using a two-diodes model, showing improvable characteristics. Ideas to enhance the properties of the devices are suggested.
{"title":"Optoelectronic properties of GaP:Ti photovoltaic devices","authors":"J. Olea , J. Gonzalo , J. Siegel , A.F. Braña , G. Godoy-Pérez , R. Benítez-Fernández , D. Caudevilla , S. Algaidy , F. Pérez-Zenteno , S. Duarte-Cano , A. del Prado , E. García-Hemme , R. García-Hernansanz , D. Pastor , E. San-Andrés , I. Mártil","doi":"10.1016/j.mtsust.2024.101008","DOIUrl":"10.1016/j.mtsust.2024.101008","url":null,"abstract":"<div><div>Supersaturated GaP is of interest for the photovoltaic field since optical transitions at energies below the bandgap (2.26 eV) could enhance the overall device efficiency up to theoretically 60%. We have previously demonstrated that Ti supersaturated GaP can be obtained by means of ion implantation and pulsed-laser melting with high structural quality and measured its below-bandgap photoconductivity. In this work we report the first results of a GaP:Ti based photovoltaic device. We have fabricated and measured photovoltaic devices with a GaP:Ti absorber layer showing enhanced external quantum efficiency at wavelengths above 550 nm. Also, we have measured the absorption coefficient (around 10<sup>4</sup> cm<sup>−1</sup>) and refractive index of this absorber layer. Finally, current-voltage curves in darkness were measured and analyzed using a two-diodes model, showing improvable characteristics. Ideas to enhance the properties of the devices are suggested.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101008"},"PeriodicalIF":7.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-17DOI: 10.1016/j.mtsust.2024.101010
Tapan K. Pani , Sadananda Muduli , Kiran Kumar Garlapati , Surendra Kumar Martha
Redox-active supercapacitors are very interesting due to their high energy density (>25 Wh kg−1 at device level) and redox charge storage mechanism. In this work, V2O5-MnO2 nanocomposites are synthesized by a scalable hydrothermal approach. MnO2 in V2O5 provides better structural stability with reasonable electrochemical performance, in which V2O5 enhances the cyclic stability and rate capabilities. The V2O5-MnO2 -based electrodes deliver a specific capacitance of 266 F g−1 at 0.5 A g−1 and are stable up to 6500 cycles with 97 % capacitance retention at 5 A g−1. The kinetic study depicts that composite electrodes have a 64 % diffusive and 36 % capacitive charge storage contribution to the overall charge storage at 1 mV s−1. In symmetric full cells, the composite materials show a wide active potential window of 2.5 V and retain 83 % capacitance after 10000 continuous GCD cycles at an applied current density of 2 A g−1. The promising charge storage performance is due to a suitable conducting matrix and the effective coating of MnO2 nanoparticles over the unique V2O5 niddle shape (two-dimensional) micro-rods.
{"title":"V2O5-MnO2 nanocomposites as an efficient electrode material for high-performance aqueous supercapacitors","authors":"Tapan K. Pani , Sadananda Muduli , Kiran Kumar Garlapati , Surendra Kumar Martha","doi":"10.1016/j.mtsust.2024.101010","DOIUrl":"10.1016/j.mtsust.2024.101010","url":null,"abstract":"<div><div>Redox-active supercapacitors are very interesting due to their high energy density (>25 Wh kg<sup>−1</sup> at device level) and redox charge storage mechanism. In this work, V<sub>2</sub>O<sub>5</sub>-MnO<sub>2</sub> nanocomposites are synthesized by a scalable hydrothermal approach. MnO<sub>2</sub> in V<sub>2</sub>O<sub>5</sub> provides better structural stability with reasonable electrochemical performance, in which V<sub>2</sub>O<sub>5</sub> enhances the cyclic stability and rate capabilities. The V<sub>2</sub>O<sub>5</sub>-MnO<sub>2</sub> -based electrodes deliver a specific capacitance of 266 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup> and are stable up to 6500 cycles with 97 % capacitance retention at 5 A g<sup>−1</sup>. The kinetic study depicts that composite electrodes have a 64 % diffusive and 36 % capacitive charge storage contribution to the overall charge storage at 1 mV s<sup>−1</sup>. In symmetric full cells, the composite materials show a wide active potential window of 2.5 V and retain 83 % capacitance after 10000 continuous GCD cycles at an applied current density of 2 A g<sup>−1</sup>. The promising charge storage performance is due to a suitable conducting matrix and the effective coating of MnO<sub>2</sub> nanoparticles over the unique V<sub>2</sub>O<sub>5</sub> niddle shape (two-dimensional) micro-rods.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101010"},"PeriodicalIF":7.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.mtsust.2024.101013
Jun Wu , Zengyan Luo , Yunzhi Tan , De'an Sun , Yongfeng Deng , Wenqi Li
Massive dredged sludge is being landfilled without effective use due to its high-water content and poor engineering properties, which not only leads to soil resources waste, but also occupies a large amounts of land sources. In this study, ternary stabilizer, including waste phosphogypsum (PG), ground granulated blast-furnace slag (GGBS), and lime (LM) with a mixing proportion of PG: GGBS: LM = 35:60:5, was adopted to improve the mechanical and environmental behaviors of sludge for subgrade filling purpose. The initial water content of sludge was controlled using two different dehydration methods for comparison. A series of laboratory tests, including unconfined compressive strength (UCS), organic matter content, and pH value were tested to understand its physical-mechanical properties. Thereafter, field application model equipped with a mini weather monitoring station was constructed to monitor the influence of solidified matrix on the surrounding water and soil environment. Time -dependent parameters such as plant growth, temperature, humidity, total nitrogen, phosphorus/potassium content, electrical conductivity, and pH value were monitored. Results indicate that the incorporation of PG-GGBS-LM ternary stabilizer significantly improves the mechanical and environmental properties of dredged sludge. The optimal dosage of the ternary stabilizer is 36%, which can result in a UCS value of the 2.0 MPa (slightly higher than ordinary Portland cement) after 28 days of curing. Field application reveals that plants could grow normally in solidified sludge. The environmental related parameters (i.e., total nitrogen, phosphorus/potassium content, electrical conductivity, and pH value) were similar with those in conventional planting soil, suggesting the advantage of the proposed PG-GGBS-LM ternary stabilizer in mechanical, economic and environmental aspects.
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