Jyoti Singh, Sachin Singh, V. Srivastava, Sadanand, R. Yadav, P. Lohia, D. K. Dwivedi
Novel solar power technologies are constantly evolving and improving, and this is seen as a potential way to meet the increasing demand for electricity and energy on a global scale. Quantum dot solar cells (QDSCs) are one of the most optimistic third‐generation solar cells. Because of the superior qualities, such as its size, tuneable bandgap, high stability, and extremely low cost, quantum dots (QDs) have drawn a lot of attention in photovoltaic applications for highly effective solar cells. Herein, WO3 is utilized as the electron transport layer (ETL), MoTe2 as the hole transport layer (HTL), and lead sulfate treated with tetrabutylammonium iodide (PbS‐TBAI) as the QD absorber layer. Overall optimization still represents an obstacle to raise the efficiency of QDSC. Temperature, series–shunt resistance, and absorber layer thickness are optimized, and further analysis is done for overall optimization on the contour plot of electron affinities of HTL and ETL. For all aspects of simulation work, the SCAPS‐1D simulator program is employed. Fill factor 85.96%, open‐circuit voltage 923.7 mV, short‐circuit density 38.61 mA cm−2, and power conversion efficiency 30.66% are the values of the optimized performance parameters. The improved high efficiency of the proposed device can pave for the fabrication of QDSC.
新型太阳能发电技术正在不断发展和改进，这被视为满足全球范围内日益增长的电力和能源需求的潜在途径。量子点太阳能电池(Quantum dot solar cells, qdsc)是目前最具前景的第三代太阳能电池之一。由于量子点具有体积小、带隙可调、稳定性高、成本极低等优点，在高效太阳能电池的光伏应用中受到了广泛的关注。本文采用WO3作为电子输运层(ETL)， MoTe2作为空穴输运层(HTL)，经四丁基碘化铵(PbS‐TBAI)处理的硫酸铅作为QD吸收层。整体优化仍然是提高QDSC效率的障碍。对温度、串并联电阻、吸收层厚度进行了优化，并对HTL和ETL的电子亲和线图进行了整体优化分析。对于仿真工作的各个方面，采用了SCAPS‐1D模拟器程序。优化后的性能参数为:填充系数85.96%，开路电压923.7 mV，短路密度38.61 mA cm−2，功率转换效率30.66%。提高了器件的高效率，为QDSC的制备奠定了基础。
{"title":"Performance Enhancement of PbS‐TBAI Quantum Dot Solar Cell with MoTe2 as Hole Transport Layer","authors":"Jyoti Singh, Sachin Singh, V. Srivastava, Sadanand, R. Yadav, P. Lohia, D. K. Dwivedi","doi":"10.1002/pssa.202300275","DOIUrl":"https://doi.org/10.1002/pssa.202300275","url":null,"abstract":"Novel solar power technologies are constantly evolving and improving, and this is seen as a potential way to meet the increasing demand for electricity and energy on a global scale. Quantum dot solar cells (QDSCs) are one of the most optimistic third‐generation solar cells. Because of the superior qualities, such as its size, tuneable bandgap, high stability, and extremely low cost, quantum dots (QDs) have drawn a lot of attention in photovoltaic applications for highly effective solar cells. Herein, WO3 is utilized as the electron transport layer (ETL), MoTe2 as the hole transport layer (HTL), and lead sulfate treated with tetrabutylammonium iodide (PbS‐TBAI) as the QD absorber layer. Overall optimization still represents an obstacle to raise the efficiency of QDSC. Temperature, series–shunt resistance, and absorber layer thickness are optimized, and further analysis is done for overall optimization on the contour plot of electron affinities of HTL and ETL. For all aspects of simulation work, the SCAPS‐1D simulator program is employed. Fill factor 85.96%, open‐circuit voltage 923.7 mV, short‐circuit density 38.61 mA cm−2, and power conversion efficiency 30.66% are the values of the optimized performance parameters. The improved high efficiency of the proposed device can pave for the fabrication of QDSC.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88301567","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}
Chunyan Li, Wenzheng Zhai, Lin Tian, Yu-Dong Lu, Jianshu Zhai, Yonghui Wang, Xiaocheng Li, S. Kou
Fe‐based amorphous ribbons with the brand name 1K101 can adsorb methylene blue (MB) solution. The adsorption reaction is multilayer adsorption, in which chemical adsorption plays a major role. There are also some processes like physical adsorption, liquid phase diffusion, and internal diffusion of particles. The adsorption reaction is exothermic and spontaneous, which is more favorable at low temperatures. During the adsorption process, the entropy value decreases, the degree of disorder and freedom of the solution decreases, and the structure also changes. What's more, H2O2, pH, ribbons's dosage, dye's concentration, and temperature affect the degradation performance of 1K101 on MB. Degradation reactions are mainly controlled by surface chemical reactions, including chemical reduction reactions and adsorption. When c(H2O2) is 15 mm, pH is 2, ribbons’ dosage is 0.9 g, c(MB) is 20 mg L−1, temperature is 338 K, the degradation effect is the best. The optimal conditions with lowest overall cost obtained under the orthogonal experiment are: c(H2O2) = 20 mm, pH = 2, ribbons's dosage = 0.7 g, c(MB) = 20 mg L−1, and T = 338 K. Overall, 1K101 amorphous ribbon can be utilized to treat MB solution, and its degradation effect is better than adsorption effect, which can provide new ideas for the reuse of waste amorphous ribbon and the treatment of azo dye wastewater.
{"title":"Adsorption and Degradation of Methylene Blue Aqueous Solution by Fe‐based Amorphous Alloy","authors":"Chunyan Li, Wenzheng Zhai, Lin Tian, Yu-Dong Lu, Jianshu Zhai, Yonghui Wang, Xiaocheng Li, S. Kou","doi":"10.1002/pssa.202300297","DOIUrl":"https://doi.org/10.1002/pssa.202300297","url":null,"abstract":"Fe‐based amorphous ribbons with the brand name 1K101 can adsorb methylene blue (MB) solution. The adsorption reaction is multilayer adsorption, in which chemical adsorption plays a major role. There are also some processes like physical adsorption, liquid phase diffusion, and internal diffusion of particles. The adsorption reaction is exothermic and spontaneous, which is more favorable at low temperatures. During the adsorption process, the entropy value decreases, the degree of disorder and freedom of the solution decreases, and the structure also changes. What's more, H2O2, pH, ribbons's dosage, dye's concentration, and temperature affect the degradation performance of 1K101 on MB. Degradation reactions are mainly controlled by surface chemical reactions, including chemical reduction reactions and adsorption. When c(H2O2) is 15 mm, pH is 2, ribbons’ dosage is 0.9 g, c(MB) is 20 mg L−1, temperature is 338 K, the degradation effect is the best. The optimal conditions with lowest overall cost obtained under the orthogonal experiment are: c(H2O2) = 20 mm, pH = 2, ribbons's dosage = 0.7 g, c(MB) = 20 mg L−1, and T = 338 K. Overall, 1K101 amorphous ribbon can be utilized to treat MB solution, and its degradation effect is better than adsorption effect, which can provide new ideas for the reuse of waste amorphous ribbon and the treatment of azo dye wastewater.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75130385","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}
Mesoporous La2CrMnO6 double perovskite is successfully synthesized using the hydrothermal technique, and characterized its physicochemical properties using X‐ray diffraction, X‐ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy, and transmission electron microscopy. The synthesized material exhibits a high surface area of 57.07 m2 g−1, providing more active sites for electrochemical charge storage. The electrochemical performance of the La2CrMnO6 as an electrode material is evaluated for the first time, which reveals an excellent specific capacitance of 1416 F g−1 at 1 A g−1 in a three‐electrode setup. Results suggest that mesoporous La2CrMnO6 double perovskite is a promising electrode material for electrochemical energy storage applications.
{"title":"Hydrothermal Synthesis and Electrochemical Performance of Mesoporous La2CrMnO6 Double Perovskite for Energy Storage Applications","authors":"Anup Singh, Ajay Vasishth, Ajay Kumar","doi":"10.1002/pssa.202300198","DOIUrl":"https://doi.org/10.1002/pssa.202300198","url":null,"abstract":"Mesoporous La2CrMnO6 double perovskite is successfully synthesized using the hydrothermal technique, and characterized its physicochemical properties using X‐ray diffraction, X‐ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy, and transmission electron microscopy. The synthesized material exhibits a high surface area of 57.07 m2 g−1, providing more active sites for electrochemical charge storage. The electrochemical performance of the La2CrMnO6 as an electrode material is evaluated for the first time, which reveals an excellent specific capacitance of 1416 F g−1 at 1 A g−1 in a three‐electrode setup. Results suggest that mesoporous La2CrMnO6 double perovskite is a promising electrode material for electrochemical energy storage applications.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"2675 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78385215","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}
Magnetic‐luminescent composite nanoparticles (Fe3O4@ZnO:RE) with a core/shell structure are produced by a simple process. Magnetite nanoparticles (Fe3O4) are coated with rare‐earth‐doped zinc oxide (ZnO). Core/shell structure is confirmed by high‐resolution transmission electron microscopy (HR‐TEM) analysis. X‐ray diffraction analysis results show that cubic magnetite Fe3O4 and hexagonal ZnO phases originate from the core and the shell, respectively. Hexagonal ZnO and cubic magnetite Fe3O4 phases belonging all nanoparticles are confirmed by HR‐TEM benefiting the lattice fringe. All the nanoparticles present superparamagnetic behavior. Under 532 nm excitation, they release the emission in the visible and infrared regions. They exhibit blue–green emission attributed to 2H11/2–4I15/2, 4S3/2–4I15/2 transitions, red emission attributed to 4F9/2–4I15/2 transitions, and infrared emission ascribed to 4F9/2–4I15/2, 2F7/2–2F5/2 transitions. Above the 0.2mol% dopant ratio, the luminescence intensity starts to decrease because of the concentration quenching. The produced nanoparticles are promising for bioimaging and magnetic hyperthermia treatment, due to their magnetic and luminescent properties, orientation to the target area, and their presence in the target area can be determined.
{"title":"Production and Characterization of Magnetic‐Luminescent Fe3O4@ZnO:RE Composite Nanoparticles for Biomedical Application","authors":"F. Unal","doi":"10.1002/pssa.202300149","DOIUrl":"https://doi.org/10.1002/pssa.202300149","url":null,"abstract":"Magnetic‐luminescent composite nanoparticles (Fe3O4@ZnO:RE) with a core/shell structure are produced by a simple process. Magnetite nanoparticles (Fe3O4) are coated with rare‐earth‐doped zinc oxide (ZnO). Core/shell structure is confirmed by high‐resolution transmission electron microscopy (HR‐TEM) analysis. X‐ray diffraction analysis results show that cubic magnetite Fe3O4 and hexagonal ZnO phases originate from the core and the shell, respectively. Hexagonal ZnO and cubic magnetite Fe3O4 phases belonging all nanoparticles are confirmed by HR‐TEM benefiting the lattice fringe. All the nanoparticles present superparamagnetic behavior. Under 532 nm excitation, they release the emission in the visible and infrared regions. They exhibit blue–green emission attributed to 2H11/2–4I15/2, 4S3/2–4I15/2 transitions, red emission attributed to 4F9/2–4I15/2 transitions, and infrared emission ascribed to 4F9/2–4I15/2, 2F7/2–2F5/2 transitions. Above the 0.2mol% dopant ratio, the luminescence intensity starts to decrease because of the concentration quenching. The produced nanoparticles are promising for bioimaging and magnetic hyperthermia treatment, due to their magnetic and luminescent properties, orientation to the target area, and their presence in the target area can be determined.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82028847","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}
M. Jalili, H. Ghanbari, R. Malekfar, Reyhaneh Goodarzi
The morphological and structural changes of an ablated flexible graphite in air and acetone ablation environments are studied here. From field emission scanning electron microscopy images, vertically aligned graphene nanosheets are found on the surface of ablated target in acetone. Measured ablation depth values for the ablated target in water are generally higher than those for the ablated target in air. X‐ray diffraction analysis reveals that the (002) peak position and full‐width at half‐maximum of this peak in the ablated flexible graphite in the air increase. The gap between the highest occupied molecular orbitals and the lowest unoccupied molecular orbitals, i.e., the bandgap of the ablated target, indicating that the energy bandgap of the ablated target in two ablation media increased compared to the nonirradiated target. Raman analysis from different points of the surface of the ablated target in both ablation media demonstrates the presence of bulk defects on the ablated target in the air, instead the edge defects are found for the ablated target in acetone. From Raman spectra, there are no single‐layer graphene nanosheets pinned on the surface of the target in acetone.
{"title":"Laser Ablation of the Flexible Graphite: A New Way to Create a Graphene‐Based Flexible Substrate","authors":"M. Jalili, H. Ghanbari, R. Malekfar, Reyhaneh Goodarzi","doi":"10.1002/pssa.202300144","DOIUrl":"https://doi.org/10.1002/pssa.202300144","url":null,"abstract":"The morphological and structural changes of an ablated flexible graphite in air and acetone ablation environments are studied here. From field emission scanning electron microscopy images, vertically aligned graphene nanosheets are found on the surface of ablated target in acetone. Measured ablation depth values for the ablated target in water are generally higher than those for the ablated target in air. X‐ray diffraction analysis reveals that the (002) peak position and full‐width at half‐maximum of this peak in the ablated flexible graphite in the air increase. The gap between the highest occupied molecular orbitals and the lowest unoccupied molecular orbitals, i.e., the bandgap of the ablated target, indicating that the energy bandgap of the ablated target in two ablation media increased compared to the nonirradiated target. Raman analysis from different points of the surface of the ablated target in both ablation media demonstrates the presence of bulk defects on the ablated target in the air, instead the edge defects are found for the ablated target in acetone. From Raman spectra, there are no single‐layer graphene nanosheets pinned on the surface of the target in acetone.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"71 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83685045","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}
P. Ren, Hao-Xiang Lin, Li-E. Cai, Chao-Zhi Xu, Zhi-Chao Chen, Hongyi Lin, F. Xiong, Jinman Huang, Linlin Cai
Herein, a novel AlGaN‐based multiple quantum well (MQW) deep UV light‐emitting diode (DUV‐LED) structure with two parts linearly graded barriers is presented. The simulation result shows that at a current of 50 mA, the light output power of the DUV‐LED with two parts linearly graded barrier MQWs has significant improvement as compared to stationary barriers. The electroluminescence spectrum and radiative recombination rate of novel DUV‐LEDs are also larger more than twice that of the conventional QW structure. The reason is that the injection efficiency of holes is increased which helps improve the hole and electron concentration in the active area. Meanwhile, the electric field is also decreased by using two parts linearly graded quantum barriers, and according to reduce the electric field the quantum‐confined Stark effect and the bend of the energy band get relieved.
{"title":"Performance of Improvement of AlGaN‐Based Deep UV Light‐Emitting Diode with Two Parts Linearly Graded Barriers","authors":"P. Ren, Hao-Xiang Lin, Li-E. Cai, Chao-Zhi Xu, Zhi-Chao Chen, Hongyi Lin, F. Xiong, Jinman Huang, Linlin Cai","doi":"10.1002/pssa.202300276","DOIUrl":"https://doi.org/10.1002/pssa.202300276","url":null,"abstract":"Herein, a novel AlGaN‐based multiple quantum well (MQW) deep UV light‐emitting diode (DUV‐LED) structure with two parts linearly graded barriers is presented. The simulation result shows that at a current of 50 mA, the light output power of the DUV‐LED with two parts linearly graded barrier MQWs has significant improvement as compared to stationary barriers. The electroluminescence spectrum and radiative recombination rate of novel DUV‐LEDs are also larger more than twice that of the conventional QW structure. The reason is that the injection efficiency of holes is increased which helps improve the hole and electron concentration in the active area. Meanwhile, the electric field is also decreased by using two parts linearly graded quantum barriers, and according to reduce the electric field the quantum‐confined Stark effect and the bend of the energy band get relieved.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83963617","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}
H. Kajii, Yuto Takayama, Shinsei Yamada, Maowei Huang, M. Kondow
{"title":"Improved Characteristics of Fluorene‐type Polymer Light‐Emitting Devices Based on Multilayer Formation from Polymers and Solution‐Processable Wide Bandgap Inorganic Copper(I) Thiocyanate with p‐Type Conduction and High Refractive Index","authors":"H. Kajii, Yuto Takayama, Shinsei Yamada, Maowei Huang, M. Kondow","doi":"10.1002/pssa.202300258","DOIUrl":"https://doi.org/10.1002/pssa.202300258","url":null,"abstract":"","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83974020","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}
Tomoaki Mashiko, Koki Takano, Akira Kaino, Sou Kuromasa, Shintaro Fujii, Tatsuya Omori, M. Sakai, K. Kudo, H. Mino
{"title":"Initial Photocarrier Generation Process in Organic Photovoltaics Observed with Light‐Triggered Time‐Domain Reflectometry","authors":"Tomoaki Mashiko, Koki Takano, Akira Kaino, Sou Kuromasa, Shintaro Fujii, Tatsuya Omori, M. Sakai, K. Kudo, H. Mino","doi":"10.1002/pssa.202300142","DOIUrl":"https://doi.org/10.1002/pssa.202300142","url":null,"abstract":"","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81872966","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}
Ikuya Fujisaki, Yuta Araki, Yuji Hatano, Takeharu Sekiguchi, H. Kato, S. Onoda, Takeshi Oshima, Takayuki Shibata, T. Iwasaki, M. Hatano
{"title":"Extension of Spin Dephasing Time of Continuously Excited Ensemble NV Centres by Double‐Quantum Ramsey Magnetometry with Spin Bath Driving","authors":"Ikuya Fujisaki, Yuta Araki, Yuji Hatano, Takeharu Sekiguchi, H. Kato, S. Onoda, Takeshi Oshima, Takayuki Shibata, T. Iwasaki, M. Hatano","doi":"10.1002/pssa.202300333","DOIUrl":"https://doi.org/10.1002/pssa.202300333","url":null,"abstract":"","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82514713","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}
T. Mimura, Reijiro Shimura, Akinori Tateyama, Y. Nakamura, T. Shiraishi, H. Funakubo
The no‐heating deposition of x%YO1.5–(100−x%)(Hf1−yZry)O2 (x = 0−0.09, y = 0, 0.25, 0.50, and 1) is achieved using a radio‐frequency magnetron sputtering method. To investigate the crystal structure and ferroelectric properties, epitaxial films are grown on (111)‐oriented indium tin oxide (ITO)/(111) Y‐stabilized zirconia (YSZ) substrates. The ferroelectric orthorhombic phase is obtained for the 5–7%YO1.5–95–93%HfO2 and 5%YO1.5–95% (Hf0.75Zr0.25)O2 films. The field‐induced phase transition from tetragonal to orthorhombic is confirmed for the 8%YO1.5–92%HfO2 and 5%YO1.5–95%(Hf0.50Zr0.50)O2 films. The remnant polarization (Pr) and coercive field (Ec) are 12–19 μC cm−2 and 2,000–2,500 kV cm−1, respectively. The piezoelectric response of 1 μm thick films is investigated for 6%YO1.5–94% HfO2, 7%YO1.5–93%HfO2, and 5%YO1.5–95%(Hf0.50Zr0.50)O2 films, which have piezoelectric coefficients (d33) of 1.0, 3.3, and 5.0 pm V−1, respectively. These results show no‐heating deposition of x%YO1.5–(100−x%)(Hf1−yZry)O2 films with ferroelectric and piezoelectric properties.
{"title":"No‐Heating Deposition of Ferroelectric x%YO1.5–(100−x%)(Hf1−yZry)O2 Films","authors":"T. Mimura, Reijiro Shimura, Akinori Tateyama, Y. Nakamura, T. Shiraishi, H. Funakubo","doi":"10.1002/pssa.202300100","DOIUrl":"https://doi.org/10.1002/pssa.202300100","url":null,"abstract":"The no‐heating deposition of x%YO1.5–(100−x%)(Hf1−yZry)O2 (x = 0−0.09, y = 0, 0.25, 0.50, and 1) is achieved using a radio‐frequency magnetron sputtering method. To investigate the crystal structure and ferroelectric properties, epitaxial films are grown on (111)‐oriented indium tin oxide (ITO)/(111) Y‐stabilized zirconia (YSZ) substrates. The ferroelectric orthorhombic phase is obtained for the 5–7%YO1.5–95–93%HfO2 and 5%YO1.5–95% (Hf0.75Zr0.25)O2 films. The field‐induced phase transition from tetragonal to orthorhombic is confirmed for the 8%YO1.5–92%HfO2 and 5%YO1.5–95%(Hf0.50Zr0.50)O2 films. The remnant polarization (Pr) and coercive field (Ec) are 12–19 μC cm−2 and 2,000–2,500 kV cm−1, respectively. The piezoelectric response of 1 μm thick films is investigated for 6%YO1.5–94% HfO2, 7%YO1.5–93%HfO2, and 5%YO1.5–95%(Hf0.50Zr0.50)O2 films, which have piezoelectric coefficients (d33) of 1.0, 3.3, and 5.0 pm V−1, respectively. These results show no‐heating deposition of x%YO1.5–(100−x%)(Hf1−yZry)O2 films with ferroelectric and piezoelectric properties.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73585578","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}
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