Article
Chemistry, Physical
Peipei Wang, Jiaqi Pan, Jie Mei, Qi Yu, Panhong Wang, Zhanfen Chen, Jingjing Wang, Changsheng Song, Yingying Zheng, Chaorong Li
Summary: A transparent NiO/CdO/ZnO pn junction film device with a CdO transition layer was prepared using a simple sol-gel and sputtering method, showing high transmittance, significant photovoltaic conversion enhancement, and improved stability, mainly attributed to the CdO transition layer's role in facilitating charge carrier transport and increasing visible light response.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Kai Oberdorf, Anna Hanft, Jacqueline Ramler, Ivo Krummenacher, F. Matthias Bickelhaupt, Jordi Poater, Crispin Lichtenberg
Summary: The controlled release of aminyl radicals from bismuth amide species at ambient temperature enables selective N-N coupling reactions to yield hydrazines. Analyzes using various spectroscopy techniques and calculations reveal low homolytic bond-dissociation energies, suggesting radical coupling in the coordination sphere of bismuth, and demonstrate the effectiveness of electronic and steric parameters in controlling these reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Shujie Sun, Wenyan Wang, Jianqiao Chen, Zhenyu Xiao, Nian Cheng, Zhiqiang Zhao, Yongshang Tian, Xiaofeng Yin
Summary: Driven by their ferroelectric, semiconducting, photonic properties, Aurivillius-type oxides of the binary Bi4Ti3O12-BiFeO3 system have shown potential in the field of photovoltaics. The optimal photovoltaic effect was observed in BFTO-4 films on Pt/Ti/SiO2/Si substrate, while an increase in layers led to an enhanced current response along with a reduction in open circuit voltage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ye Zeng, Zhen Cao, Jizhang Liao, Hanfeng Liang, Binbin Wei, Xun Xu, Haiwang Xu, Jiaxian Zheng, Weijie Zhu, Luigi Cavallo, Zhoucheng Wang
Summary: NiFe oxyhydroxide has promising OER activity, which can be further enhanced by constructing pn junction. The MnCo-CH@NiFe-OH pn junction shows significantly improved OER performance and HER activity, outperforming Pt/C||RuO2 catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Energy & Fuels
Or Shafir, Andrew L. Bennett-Jackson, Alexandria R. Will-Cole, Atanu Samanta, Dongfang Chen, Adrian Podpirka, Aaron Burger, Liyan Wu, Eduardo Lupi Sosa, Lane W. Martin, Jonathan E. Spanier, Ilya Grinberg
Summary: By tuning fundamental ferroelectric properties, a high BPE photoresponse can be achieved in an ordinary thin-film configuration. The responsivity shows a nonmonotonic dependence on ferroelectric polarization, and at the optimal value, it increases by three orders of magnitude compared to the bulk BaTiO3.
Article
Chemistry, Multidisciplinary
Yooun Heo, Marin Alexe
Summary: Enhancing the piezoelectric property of BiFeO3 single crystals using light as a control parameter can result in a locally enhanced effective piezoelectric coefficient, d(zz), showing almost a sevenfold increase. This phenomenon is explained with theoretical models involving the bulk photovoltaic effect and Schottky barrier effect, and the role of open-circuit voltage and photocharge carrier density. These results offer key insights into light-induced piezoelectricity enhancement for potential multifunctional optoelectronic devices.
ADVANCED MATERIALS
(2022)
Article
Thermodynamics
Panagiotis Stamatopoulos, Myrto Zeneli, Aristeidis Nikolopoulos, Alessandro Bellucci, Daniele M. Trucchi, Nikos Nikolopoulos
Summary: In recent years, innovative concepts of solid-state devices such as multi-junction solar cells and thermophotovoltaic converters have emerged as efficient means of direct electricity production. This work presents an in-house code based on the Drift Diffusion Model to simulate the performance of such devices, revealing that efficiency is highly influenced by various factors including device dimensions, doping levels, material type, and operating temperature. This model takes into account temperature and electromagnetic spectrum dependencies and can be extended to incorporate thermally stimulated electron emission and 2D spatial effects, providing a valuable tool for optimizing solid-state device performance.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Arti, Reema Gupta, S. P. Singh, Rajan Walia, Vinod Kumar, Vivek Verma
Summary: Bismuth ferrite has been extensively studied as a potential material for photovoltaic and photo-catalytic applications. Co-doping with rare-earth and transition elements can modify its properties and improve its performance in multiferroic, ferroelectric, photovoltaic, and photocatalytic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Sihao Xia, Yu Diao, Mingming Jiang, Caixia Kan
Summary: The study proposed a self-powered photodetector based on Al (x) Ga1-x N nanowire arrays, and demonstrated the advantages of the coupling structure through theoretical models and simulations. This research provides a reliable method for designing photodetectors with micro-nano structures.
Article
Chemistry, Physical
Zhe Sheng, Yue Wang, Wennan Hu, Haoran Sun, Jianguo Dong, Rui Yu, David Wei Zhang, Peng Zhou, Zengxing Zhang
Summary: The unique features of ambipolar two-dimensional materials provide an opportunity to build gate-programmable devices for reconfigurable circuit applications. In this study, we propose an approach of complementary gate-programmable PN junctions to assemble a reconfigurable rectifier circuit that can effectively reconfigure the circuit and process high-frequency signals.
Article
Chemistry, Physical
Lei Lu, Yunlong Xu, Lixin Que, Jun Cao, Jingjing Wang, Yingying Zheng, Lei Shi, Wenwu Zhong, Chaorong Li, Jiaqi Pan
Summary: A transparent Cu2O/ZIS-3-TiO2 pn junction with high transmittance and significant enhancement in photovoltaic conversion efficiency has been prepared. This is achieved by using Zn3In2S6 quantum dots with appropriate Fermi level, high quantum yields, and wide band gap, as well as orderly TiO2 nanoarrays providing carrier transportation pathway.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
I. M. Flor, A. Lacerda-Santos, G. Fleury, P. Roulleau, X. Waintal
Summary: Recent experiments have shown that electronic Mach-Zehnder interferometers of unprecedented fidelities could be built using a graphene pn junction in the quantum Hall regime. The separation between two different edge states in the junction is abnormally high and is independent of the exchange splitting value, being governed entirely by the sample geometry.
Article
Chemistry, Multidisciplinary
Mariarosa Cavallo, Erwan Bossavit, Sylvia Matzen, Thomas Maroutian, Rodolphe Alchaar, Tung Huu Dang, Adrien Khalili, Corentin Dabard, Huichen Zhang, Yoann Prado, Claire Abadie, James K. Utterback, Jean Francois Dayen, Mathieu G. G. Silly, Pavel Dudin, Jose Avila, Emmanuel Lhuillier, Debora Pierucci
Summary: By coupling an NC layer to a ferroelectric material, the carrier density control is achieved, leading to the formation of a lateral pn junction and improving the sensitivity and detectivity of infrared photodiodes.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Yoshihiro Okamura, Takahiro Morimoto, Naoki Ogawa, Yoshio Kaneko, Guang-Yu Guo, Masao Nakamura, Masashi Kawasaki, Naoto Nagaosa, Yoshinori Tokura, Youtarou Takahashi
Summary: The shift current induced by soft-phonon excitations in ferroelectric materials enables efficient quantum bulk photovoltaic effect (BPVE), which provides a principle for the design of high-performance terahertz photodetectors.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Engineering, Electrical & Electronic
Mingwei Su, Mingqiang Zhong, Xiao Liu, Changlai Yuan, Liufang Meng, Changrong Zhou, Fei Liu, Jiwen Xu, Jiang Wang, Guanghui Rao
Summary: Defect-induced semiconducting ferroelectric oxides enable the classic ferroelectric Bi0.5Na0.5TiO3 (BNT) to have a low bandgap while maintaining ferroelectricity and enhancing its photovoltaic output. A series of ferroelectric semiconductor materials (1-x)Bi0.5Na0.5TiO3-xBaNb(0.5)Zn(0.5)O(3-delta)(BNT-BZN) with photovoltaic effects were successfully synthesized. The optical bandgap of BNT was slightly reduced to 2.51 eV by non-equilibrium stoichiometric defects and interstitial ions in the BZN-modified BNT ceramic. The semiconducting BNT-BZN ceramics exhibit potential applications in photovoltaic devices and photoelectric conversion.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
