Pub Date : 2022-03-08DOI: 10.52228/jrub.2022-35-1-6
Srishti Verma, V. Valvi, K. Shukla
Wild mushrooms are well known to produce wide range of bioactive metabolites and different types of enzymes. In this study 5 wild mushroom samples were collected which belongs to different groups. Samples were isolated and observed the culture characteristics, during the growth of mycelia many biochemical changes are known to occur, as a result of which enzymes are secreted extracellularly to degrade the insoluble materials into the substrates. Primary screening of extracellular amylase and cellulose were carried out by plate culture method in the GYP media with soluble starch to test the amylase activity and for cellulase, CMC (Carboxymethyl cellulose) plate assay was used. All the mushroom cultures differ in context of extracellular enzymatic activity. The activity of amylase enzyme was substantially higher in all the mushroom cultures. In the screening of cellulase enzyme two cultures were observed as positive. Present study suggests the capacity of these wild mushrooms in the production of biotechnologically useful enzymes with great industrial importance.
{"title":"Screening Some Extracellular Enzymes of Wild Mushrooms from Pt. Ravishankar Shukla University Campus","authors":"Srishti Verma, V. Valvi, K. Shukla","doi":"10.52228/jrub.2022-35-1-6","DOIUrl":"https://doi.org/10.52228/jrub.2022-35-1-6","url":null,"abstract":"\u0000 Wild mushrooms are well known to produce wide range of bioactive metabolites and different types of enzymes. In this study 5 wild mushroom samples were collected which belongs to different groups. Samples were isolated and observed the culture characteristics, during the growth of mycelia many biochemical changes are known to occur, as a result of which enzymes are secreted extracellularly to degrade the insoluble materials into the substrates. Primary screening of extracellular amylase and cellulose were carried out by plate culture method in the GYP media with soluble starch to test the amylase activity and for cellulase, CMC (Carboxymethyl cellulose) plate assay was used. All the mushroom cultures differ in context of extracellular enzymatic activity. The activity of amylase enzyme was substantially higher in all the mushroom cultures. In the screening of cellulase enzyme two cultures were observed as positive. Present study suggests the capacity of these wild mushrooms in the production of biotechnologically useful enzymes with great industrial importance. \u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82530865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-08DOI: 10.52228/jrub.2022-35-1-8
Srishti Verma, M. Tiwari, R. V. Shukla, K. Shukla
The Agarics as a group, occurs in a varieties of habitat. Some species exist in areas that are geographically separated, while some are known only from restricted areas and many species do seem to show preference for a certain type of natural habitats as well as for a particular substrate. An extensive exploration of wild mushrooms carried out from 2019 to 2021 at different forest ranges of Achanakmar Biosphere Reserve,Chhattisgarh India. Seven different species of Termitomyces namely Termitomycesclypeatus, T. microcarpus, T. rabuorii, T. streatus, T. radicatus, Termitomyces sp. -1, Termitomyces sp -2, were found in edible form. So far members of the group which are found in soil, dung, plant derbies, independently or in association with particular plant species has minimal documentation and germ-plasm collection from Chhattisgarh state, which is known for the largest forest land and the tribal population.
{"title":"Species of Termitomyces (Agaricales) Occurring in Achanakmar Biosphere Reserve, Chhattisgarh","authors":"Srishti Verma, M. Tiwari, R. V. Shukla, K. Shukla","doi":"10.52228/jrub.2022-35-1-8","DOIUrl":"https://doi.org/10.52228/jrub.2022-35-1-8","url":null,"abstract":"\u0000 The Agarics as a group, occurs in a varieties of habitat. Some species exist in areas that are geographically separated, while some are known only from restricted areas and many species do seem to show preference for a certain type of natural habitats as well as for a particular substrate. An extensive exploration of wild mushrooms carried out from 2019 to 2021 at different forest ranges of Achanakmar Biosphere Reserve,Chhattisgarh India. Seven different species of Termitomyces namely Termitomycesclypeatus, T. microcarpus, T. rabuorii, T. streatus, T. radicatus, Termitomyces sp. -1, Termitomyces sp -2, were found in edible form. So far members of the group which are found in soil, dung, plant derbies, independently or in association with particular plant species has minimal documentation and germ-plasm collection from Chhattisgarh state, which is known for the largest forest land and the tribal population. \u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78786777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-08DOI: 10.52228/jrub.2022-35-1-7
Yogyata Chawre, Lakshita Dewangan, A. B. Kujur, Indrapal Karbhal, Rekha Nagwanshi, V. Jain, M. L. Satnami
Organic/inorganic nanohybrids and quantum dots have attracted widespread interest due to their favorable properties and promising applications. Great efforts have been made to design and fabricate versatile nanohybrids. Processing structure-properties-performance relationships are reviewed for compound quantum dots. In this review, various methods for synthesizing quantum dots as well as their resulting properties are discussed. This review focuses on the design, properties, sensing as well as energy applications of organic/inorganic nanohybrids as well as quantum dots. In this article, strategies for the fabrication, properties, functions, characterization techniques, various synthesis strategies and application of nanohybrids and quantum dots are briefly deliberated.
{"title":"Quantum Dots and Nanohybrids and their Various Applications: A Review","authors":"Yogyata Chawre, Lakshita Dewangan, A. B. Kujur, Indrapal Karbhal, Rekha Nagwanshi, V. Jain, M. L. Satnami","doi":"10.52228/jrub.2022-35-1-7","DOIUrl":"https://doi.org/10.52228/jrub.2022-35-1-7","url":null,"abstract":"\u0000 Organic/inorganic nanohybrids and quantum dots have attracted widespread interest due to their favorable properties and promising applications. Great efforts have been made to design and fabricate versatile nanohybrids. Processing structure-properties-performance relationships are reviewed for compound quantum dots. In this review, various methods for synthesizing quantum dots as well as their resulting properties are discussed. This review focuses on the design, properties, sensing as well as energy applications of organic/inorganic nanohybrids as well as quantum dots. In this article, strategies for the fabrication, properties, functions, characterization techniques, various synthesis strategies and application of nanohybrids and quantum dots are briefly deliberated. \u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78283610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-08DOI: 10.52228/jrub.2022-35-1-10
S. Patra, S. Tiwari, Umang Singh
III- Nitride materials have radically changed the lighting industry allowing for the developments of high efficiency and brightness ultraviolet LED. In this paper, the characterised between electroluminescence spectra pick wavelength and QW thickness through simulations with presence on electric field. According the QCSE when electric field applied perpendicular to the QWs layers resulted in large read shifts in absorption. I have taken One Dimensional Drift Diffusion charge control solver (1D-DDCC) software for simulations that is solve Passion Schrodinger equation developed by Pro.Yuh-Renn WU of UM. This solver has many functions like- Tunnable parameters for all basic material, Hetrojunction simulation, Dopant activation energy, Eigen solve for Schrodinger equation.
{"title":"Parametric study of AlGAN/GaN UV-Led Based on Quantum Confined Stark Effect (QCSE)","authors":"S. Patra, S. Tiwari, Umang Singh","doi":"10.52228/jrub.2022-35-1-10","DOIUrl":"https://doi.org/10.52228/jrub.2022-35-1-10","url":null,"abstract":"\u0000 III- Nitride materials have radically changed the lighting industry allowing for the developments of high efficiency and brightness ultraviolet LED. In this paper, the characterised between electroluminescence spectra pick wavelength and QW thickness through simulations with presence on electric field. According the QCSE when electric field applied perpendicular to the QWs layers resulted in large read shifts in absorption. I have taken One Dimensional Drift Diffusion charge control solver (1D-DDCC) software for simulations that is solve Passion Schrodinger equation developed by Pro.Yuh-Renn WU of UM. This solver has many functions like- Tunnable parameters for all basic material, Hetrojunction simulation, Dopant activation energy, Eigen solve for Schrodinger equation. \u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85459202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-08DOI: 10.52228/jrub.2022-35-1-9
Gulab Singh Verma, Lokesh Sahu
Cloud computing has become one of the hottest technologies of the emerging 21st century technology, Cloud computing is related to a variety of themes that take on a larger dimension of mainstream media, there are various cloud computing books have also been available on shelves in recent years. The Internet makes the world more accessible. Cloud storage is an important infrastructure for achieving seamless data sharing and experience of service communications from different users, different applications, different devices around the world. It will be a new public infrastructure service, such as water, electricity, available anytime, anywhere. Cloud is not a specific product, but a way to deliver IT services that can be used when needed, expand up and down as needed, and follow a usage model. Cloud computing is a computer style in which computer resources are easily accessible and accessible, easy to use, cheap, and just working. Cloud is not a point product or a single technology, but a way to deliver IT services in a way that provides self-sufficiency, demand and use for each payment. By making data available in the cloud, easily accessible and ubiquitous, usually at much lower costs, increase their value by enabling opportunities for improved collaboration, integration, and analysis on a common shared platform.
{"title":"Introduction to Cloud Storage Services","authors":"Gulab Singh Verma, Lokesh Sahu","doi":"10.52228/jrub.2022-35-1-9","DOIUrl":"https://doi.org/10.52228/jrub.2022-35-1-9","url":null,"abstract":"\u0000 Cloud computing has become one of the hottest technologies of the emerging 21st century technology, Cloud computing is related to a variety of themes that take on a larger dimension of mainstream media, there are various cloud computing books have also been available on shelves in recent years. The Internet makes the world more accessible. Cloud storage is an important infrastructure for achieving seamless data sharing and experience of service communications from different users, different applications, different devices around the world. It will be a new public infrastructure service, such as water, electricity, available anytime, anywhere. Cloud is not a specific product, but a way to deliver IT services that can be used when needed, expand up and down as needed, and follow a usage model. Cloud computing is a computer style in which computer resources are easily accessible and accessible, easy to use, cheap, and just working. Cloud is not a point product or a single technology, but a way to deliver IT services in a way that provides self-sufficiency, demand and use for each payment. By making data available in the cloud, easily accessible and ubiquitous, usually at much lower costs, increase their value by enabling opportunities for improved collaboration, integration, and analysis on a common shared platform. \u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79113028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-08DOI: 10.52228/jrub.2022-35-1-5
Madhu Allalla, N. Shukla, Sweta Minj, S. Tiwari
Recently, organic-inorganic perovskite-based solar cells have become a revolution in photovoltaic field due to their unique properties. Several studies were focused on perovskite solar cells based on Pb perovskite layer as lead provides strong absorption of photons and have high efficiency. However, the factor of toxicity, stability and ecological challenges of these devices is the main challenge to the progress in commercial production. In this, study and numerical modeling of perovskite solar cells using an alternative candidate which is tin as a perovskite material has been carried out. This later is investigated in order to overcome the toxicity, stability and ecological challenges effects on perovskite solar cells, as they exhibit similar photovoltaic performances as Pb-perovskite solar cells. Therefore, the effect of single and double absorbent i.e. CH3NH3SnI3 and CH3NH3SnBr3 and no Hole Transport Layer is studied and investigated to enhance the conversion efficiency of perovskite devices. The obtained simulation results illustrate that perovskite solar cells based on no HTL and double absorbent layer exhibit 21.3% of power conversion efficiency compared to that with other HTL materials. Thus, adding double absorbent layer in perovskite solar cell design possibly will be considered as novel designing for future Sn-perovskite solar cells. The numerical simulation was performed using 1DSolar Cell Capacitance Simulator (1D- SCAPS).
{"title":"Study of Design and Device Modeling of Double layered Perovskite Solar Cells","authors":"Madhu Allalla, N. Shukla, Sweta Minj, S. Tiwari","doi":"10.52228/jrub.2022-35-1-5","DOIUrl":"https://doi.org/10.52228/jrub.2022-35-1-5","url":null,"abstract":"Recently, organic-inorganic perovskite-based solar cells have become a revolution in photovoltaic field due to their unique properties. Several studies were focused on perovskite solar cells based on Pb perovskite layer as lead provides strong absorption of photons and have high efficiency. However, the factor of toxicity, stability and ecological challenges of these devices is the main challenge to the progress in commercial production. In this, study and numerical modeling of perovskite solar cells using an alternative candidate which is tin as a perovskite material has been carried out. This later is investigated in order to overcome the toxicity, stability and ecological challenges effects on perovskite solar cells, as they exhibit similar photovoltaic performances as Pb-perovskite solar cells. Therefore, the effect of single and double absorbent i.e. CH3NH3SnI3 and CH3NH3SnBr3 and no Hole Transport Layer is studied and investigated to enhance the conversion efficiency of perovskite devices. The obtained simulation results illustrate that perovskite solar cells based on no HTL and double absorbent layer exhibit 21.3% of power conversion efficiency compared to that with other HTL materials. Thus, adding double absorbent layer in perovskite solar cell design possibly will be considered as novel designing for future Sn-perovskite solar cells. The numerical simulation was performed using 1DSolar Cell Capacitance Simulator (1D- SCAPS).","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84581071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.52228/jrub.2021-34-1-12
A. Sahu, M. Rai, Joyce Rai, Y. Sahu, D. Sahu, Kalpana Wani, J. Goswami, C. Bhatt
The present work describes a newly developed method for the spectrophotometric determination of cymoxanil in soil, water and vegetable samples. The detection of the target chemical substance is based on the reaction of cyanide released from the hydrolysed product of cymoxanil with potassium iodide-potassium iodate to form a blue-coloured complex in the presence of starch solution. This complex is water-soluble and shows maximum absorbance at 580 nm. For this complex, Beer's law is obeyed over the concentration range of 2-50 μg mL−1 with molar absorptivity 1.2×105 L mol-1cm-1 and Sandell’s sensitivity 1.0×10-3 µg cm-2. The reproducibility was assessed by carrying out seven days replicate analysis of a solution containing 10 µgmL-1 of cymoxanil in a final solution of a volume of 10 mL. The standard deviation and relative standard deviation for the absorbance value were found to be ± 2.9×10-3 and 1.6% respectively. The proposed method is free from the interference of other toxicants. The analytical parameters were optimized and the method was applied to the determination of cymoxanil in water, soil, and vegetable samples.
本文介绍了一种分光光度法测定土壤、水和蔬菜样品中氰胺的新方法。检测目标化学物质的方法是在淀粉溶液存在下，由昔莫昔尼水解产物释放的氰化物与碘化钾-碘酸钾反应形成蓝色络合物。该配合物是水溶性的，在580nm处显示出最大吸光度。该配合物在2 ~ 50 μg mL -1的浓度范围内符合比尔定律，摩尔吸光度1.2×105 L mol- ccm -1，桑德尔灵敏度1.0×10-3µg cm-2。以含有10µgmL-1昔莫昔尼的溶液为最终溶液，体积为10 mL，进行7天的重复分析，评估重现性。吸光度值的标准偏差和相对标准偏差分别为±2.9×10-3和1.6%。所提出的方法不受其他毒物的干扰。优化了分析参数，并将该方法应用于水、土壤和蔬菜样品中氰胺的测定。
{"title":"Assessment of Cymoxanil in Soil, Water and Vegetable Samples","authors":"A. Sahu, M. Rai, Joyce Rai, Y. Sahu, D. Sahu, Kalpana Wani, J. Goswami, C. Bhatt","doi":"10.52228/jrub.2021-34-1-12","DOIUrl":"https://doi.org/10.52228/jrub.2021-34-1-12","url":null,"abstract":"\u0000 The present work describes a newly developed method for the spectrophotometric determination of cymoxanil in soil, water and vegetable samples. The detection of the target chemical substance is based on the reaction of cyanide released from the hydrolysed product of cymoxanil with potassium iodide-potassium iodate to form a blue-coloured complex in the presence of starch solution. This complex is water-soluble and shows maximum absorbance at 580 nm. For this complex, Beer's law is obeyed over the concentration range of 2-50 μg mL−1 with molar absorptivity 1.2×105 L mol-1cm-1 and Sandell’s sensitivity 1.0×10-3 µg cm-2. The reproducibility was assessed by carrying out seven days replicate analysis of a solution containing 10 µgmL-1 of cymoxanil in a final solution of a volume of 10 mL. The standard deviation and relative standard deviation for the absorbance value were found to be ± 2.9×10-3 and 1.6% respectively. The proposed method is free from the interference of other toxicants. The analytical parameters were optimized and the method was applied to the determination of cymoxanil in water, soil, and vegetable samples.\u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77860606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.52228/jrub.2021-34-1-13
G. Rathore, B. Krishna, R. Patel, S. Tiwari
Controlling the PV array to generate the maximum power at certain environment conditions, the efficiency of the PV generation system could be improved. Using control algorithms, the PV array can operate at the maximum power point. This self-optimization process is referred as Maximum power point tracking (MPPT). A maximum power point tracker (MPPT) is a power electronic DC-DC converter inserted between the PV array and its load to achieve optimum matching. Researchers have studied and developed numerous methods and used many algorithms to track the Maximum power point of PV Module and extract maximum power using MPPT technique. This review article accumulates various algorithms through which MPPT could be attained and assists the researchers to understand the principle of their working. The paper also gives an idea to about less explored DC appliances and their viabilities in existing and proposed DC system.
{"title":"Various Techniques of MPPT Based Charge Controller and Comparison of A/C with D/C Home Appliances - A Review","authors":"G. Rathore, B. Krishna, R. Patel, S. Tiwari","doi":"10.52228/jrub.2021-34-1-13","DOIUrl":"https://doi.org/10.52228/jrub.2021-34-1-13","url":null,"abstract":"\u0000 Controlling the PV array to generate the maximum power at certain environment conditions, the efficiency of the PV generation system could be improved. Using control algorithms, the PV array can operate at the maximum power point. This self-optimization process is referred as Maximum power point tracking (MPPT). A maximum power point tracker (MPPT) is a power electronic DC-DC converter inserted between the PV array and its load to achieve optimum matching. Researchers have studied and developed numerous methods and used many algorithms to track the Maximum power point of PV Module and extract maximum power using MPPT technique. This review article accumulates various algorithms through which MPPT could be attained and assists the researchers to understand the principle of their working. The paper also gives an idea to about less explored DC appliances and their viabilities in existing and proposed DC system.\u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73951780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.52228/jrub.2021-34-1-8
N. Shukla, Dhara R. Prajapati, S. Tiwari
Perovskite solar cells fabricated with inexpensive and simple technology exhibits high efficiency has witnessed worldwide boom in research. The optimization of solar cell can be done through modeling and simulation. The optical and electrical modeling are the ways to optimize different parameter such as thickness, defect density, doping density and material selection for fabricating stable and highly efficient perovskite solar cells. In this research work, electrical modeling of solar cell is done throughSolar Cell Capacitance Simulator(SCAPS-1D).The architecture of the solar cell is n-i-p device structure. CH3NH3PbI3-xClx acts as light absorber active layer, TiO2 as electron transport layer and Spiro-OMeTADas hole transport layer with device structure FTO/ TiO2/ CH3NH3PbI3-xClx/ Spiro-OMeTAD/Au. The open circuit voltage Voc, short circuit current density Isc, fill factor and power conversion efficiency are 1.28 V, 21.63 mA/cm2, 0.78 and 21.53% respectively. The result showed that the optimize parameter can be applied for fabrication of the solar cell experimentally. Various metal contact materials of the anodeare also studied and analyzed.
{"title":"Investigation on Design and Device Modeling of High Performance CH3NH3PbI3-xClx Perovskite Solar Cells","authors":"N. Shukla, Dhara R. Prajapati, S. Tiwari","doi":"10.52228/jrub.2021-34-1-8","DOIUrl":"https://doi.org/10.52228/jrub.2021-34-1-8","url":null,"abstract":"\u0000 Perovskite solar cells fabricated with inexpensive and simple technology exhibits high efficiency has witnessed worldwide boom in research. The optimization of solar cell can be done through modeling and simulation. The optical and electrical modeling are the ways to optimize different parameter such as thickness, defect density, doping density and material selection for fabricating stable and highly efficient perovskite solar cells. In this research work, electrical modeling of solar cell is done throughSolar Cell Capacitance Simulator(SCAPS-1D).The architecture of the solar cell is n-i-p device structure. CH3NH3PbI3-xClx acts as light absorber active layer, TiO2 as electron transport layer and Spiro-OMeTADas hole transport layer with device structure FTO/ TiO2/ CH3NH3PbI3-xClx/ Spiro-OMeTAD/Au. The open circuit voltage Voc, short circuit current density Isc, fill factor and power conversion efficiency are 1.28 V, 21.63 mA/cm2, 0.78 and 21.53% respectively. The result showed that the optimize parameter can be applied for fabrication of the solar cell experimentally. Various metal contact materials of the anodeare also studied and analyzed. \u0000","PeriodicalId":17214,"journal":{"name":"Journal of Ravishankar University (PART-B)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87903166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.52228/jrub.2021-34-1-6
Beeta Rani Khalkho, A. Saha, Bhuneshwari Sahu, M. Deb
Abstract. The purpose of the present research was to design a method for the colorimetric determination of L-cysteine. We have employed PVA capped gold nanoparticles (GNPs) as a probe. The as-synthesized GNPs were further characterized by UV-vis absorption spectroscopy, transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS) and Zeta potential analyser. The results show that the presence of L-cysteine caused the quenching of the surface plasmon resonance band of the GNPs at 524 nm. It was accompanied by the appearance of a new absorbance of a new absorbance band at 670 nm. The color of the colloidal GNPs changed from wine red to blue. The change in color of the GNPs was due to their aggregation induced by the presence of L-cysteine. Based on these observations, the as-synthesized GNPs were utilized to develop a novel colorimetric sensor for L-cysteine detection in food samples. Significantly, other biomolecules such as alanine, proline, phenylalanine, tryptophane, valine, arginine, glutamic acid, lysine and histidine did not cause any change in the color of the GNPs solutions. This colorimetric probe showed excellent selectivity and high sensitivity for L-cysteine with a detection limit of 2.0 μg mL-1.
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