Journal ArticleDOI
Photovoltaic-Pyroelectric Coupled Effect Induced Electricity for Self-Powered Photodetector System.
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TLDR
A ferroelectric BaTiO3 film-based photodetector is demonstrated that can be operated without using any external power source and a fast sensing of 405 nm light illumination is enabled.Abstract:
Ferroelectric materials have demonstrated novel photovoltaic effect to scavenge solar energy. However, most of the ferroelectric materials with wide bandgaps (2.7–4 eV) suffer from low power conversion efficiency of less than 0.5% due to absorbing only 8–20% of solar spectrum. Instead of harvesting solar energy, these ferroelectric materials can be well suited for photodetector applications, especially for sensing near-UV irradiations. Here, a ferroelectric BaTiO3 film-based photodetector is demonstrated that can be operated without using any external power source and a fast sensing of 405 nm light illumination is enabled. As compared with photovoltaic effect, both the responsivity and the specific detectivity of the photodetector can be dramatically enhanced by larger than 260% due to the light-induced photovoltaic–pyroelectric coupled effect. A self-powered photodetector array system can be utilized to achieve spatially resolved light intensity detection by recording the output voltage signals as a mapping figure.read more
Citations
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Journal ArticleDOI
Self-Powered Ultraviolet Photodetector with Superhigh Photoresponsivity (3.05 A/W) Based on the GaN/Sn:Ga2O3 pn Junction.
Daoyou Guo,Yuanli Su,Haoze Shi,Peigang Li,Nie Zhao,Junhao Ye,Shunli Wang,Aiping Liu,Zhengwei Chen,Chaorong Li,Weihua Tang +10 more
TL;DR: This study generates a super-high-performance self-powered UV photodetector based on a GaN/Sn:Ga2O3 pn junction that has a high UV/visible rejection ratio, and a fast photoresponse time of 18 ms without bias.
Journal ArticleDOI
Recent progress on highly sensitive perovskite photodetectors
Jianli Miao,Fujun Zhang +1 more
TL;DR: In this paper, the authors summarized the recent progress on emerging perovskite photodetectors from the perspective of device physics and materials science and investigated the strategies for extending the spectral response range of PPDs and improving the performance of devices.
Journal ArticleDOI
Ferroelectric Materials for Solar Energy Conversion: Photoferroics Revisited
TL;DR: The application of ferroelectric materials (i.e. solids that exhibit spontaneous electric polarisation) in solar cells has a long and controversial history as mentioned in this paper, and the recent successful application of inorganic and hybrid perovskite structured materials (e.g. BiFeO3, CsSnI3, CH3NH3PbI3) emphasises that polar semiconductors can be used in conventional photovoltaic architectures.
Journal ArticleDOI
Self-Powered Photodetectors Based on 2D Materials
Journal ArticleDOI
Piezoelectrically enhanced photocatalysis with BiFeO3 nanostructures for efficient water remediation
Fajer Mushtaq,Xiang-Zhong Chen,Marcus Hoop,Harun Torlakcik,Eva Pellicer,Jordi Sort,Chiara Gattinoni,Bradley J. Nelson,Salvador Pané +8 more
TL;DR: This work fabricated single-crystalline BiFeO3 (BFO) nanosheets and nanowires that can successfully harness visible light and mechanical vibrations and utilize them for degradation of organic pollutants.
References
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Journal ArticleDOI
ZnO Nanowire UV Photodetectors with High Internal Gain
Cesare Soci,Arthur Zhang,Bin Xiang,Shadi A. Dayeh,David P. R. Aplin,Jeongwon Park,Xinyu Bao,Yu-Hwa Lo,Deli Wang +8 more
TL;DR: Despite the slow relaxation time, the extremely high internal gain of ZnO NW photodetectors results in gain-bandwidth products higher than approximately 10 GHz, which promise a new generation of phototransistors for applications such as sensing, imaging, and intrachip optical interconnects.
Journal ArticleDOI
Switchable ferroelectric diode and photovoltaic effect in BiFeO3.
TL;DR: It is found that bulk electric conduction in ferroelectric monodomain BiFeO3 crystals is highly nonlinear and unidirectional.
Journal ArticleDOI
Above-bandgap voltages from ferroelectric photovoltaic devices
S. Y. Yang,Jan Seidel,Jan Seidel,Byrnes Steven J,Byrnes Steven J,Padraic Shafer,Chan-Ho Yang,Marta D. Rossell,Pu Yu,Ying-Hao Chu,James F. Scott,Joel W. Ager,Lane W. Martin,Ramamoorthy Ramesh,Ramamoorthy Ramesh +14 more
TL;DR: A fundamentally different mechanism for photovoltaic charge separation is reported, which operates over a distance of 1-2 nm and produces voltages that are significantly higher than the bandgap.
Journal ArticleDOI
High‐voltage bulk photovoltaic effect and the photorefractive process in LiNbO3
TL;DR: An explanation of the photovoltaic effect, based on the asymmetry of the lattice, is proposed in this paper, which accounts for the light-induced index changes in LiNbO3.
Journal ArticleDOI
Perovskite oxides for visible-light-absorbing ferroelectric and photovoltaic materials
Ilya Grinberg,D. Vincent West,Maria I. Alvarado Torres,Gaoyang Gou,David M. Stein,Liyan Wu,Guannan Chen,Eric M. Gallo,Andrew R. Akbashev,Peter K. Davies,Jonathan E. Spanier,Andrew M. Rappe +11 more
TL;DR: The ability of KBNNO to absorb three to six times more solar energy than the current ferroElectric materials suggests a route to viable ferroelectric semiconductor-based cells for solar energy conversion and other applications.