Low-Noise and Large-Linear-Dynamic-Range Photodetectors Based on Hybrid-Perovskite Thin-Single-Crystals.
Chunxiong Bao,Zhaolai Chen,Yanjun Fang,Haotong Wei,Yehao Deng,Xun Xiao,Lingliang Li,Jinsong Huang,Jinsong Huang +8 more
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TLDR
Here, perovskite thin-single-crystal (TSC) photodetectors are fabricated with a vertical p-i-n structure, which reduces charge recombination and enables a linear response under strong light, superior to polycrystalline photodETectors.Abstract:
Organic-inorganic halide perovskites are promising photodetector materials due to their strong absorption, large carrier mobility, and easily tunable bandgap. Up to now, perovskite photodetectors are mainly based on polycrystalline thin films, which have some undesired properties such as large defective grain boundaries hindering the further improvement of the detector performance. Here, perovskite thin-single-crystal (TSC) photodetectors are fabricated with a vertical p-i-n structure. Due to the absence of grain-boundaries, the trap densities of TSCs are 10-100 folds lower than that of polycrystalline thin films. The photodetectors based on CH3 NH3 PbBr3 and CH3 NH3 PbI3 TSCs show low noise of 1-2 fA Hz-1/2 , yielding a high specific detectivity of 1.5 × 1013 cm Hz1/2 W-1 . The absence of grain boundaries reduces charge recombination and enables a linear response under strong light, superior to polycrystalline photodetectors. The CH3 NH3 PbBr3 photodetectors show a linear response to green light from 0.35 pW cm-2 to 2.1 W cm-2 , corresponding to a linear dynamic range of 256 dB.read more
Citations
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Halide lead perovskites for ionizing radiation detection
Haotong Wei,Jinsong Huang +1 more
TL;DR: The promising features and challenges of halide perovskites as promising radiation detectors are shown and it is suggested that they may compete with the conventional counterparts.
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Metal-Doped Lead Halide Perovskites: Synthesis, Properties, and Optoelectronic Applications
TL;DR: Doping of lead halide perovskites (LHPs) with the targeted impurities has emerged as an additional lever, a dimension beyond structural perfection and compositional distinction, for the alteration as mentioned in this paper.
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Polymer-Passivated Inorganic Cesium Lead Mixed-Halide Perovskites for Stable and Efficient Solar Cells with High Open-Circuit Voltage over 1.3 V.
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Accurate characterization of next-generation thin-film photodetectors
TL;DR: The performance of photodetectors fabricated from emerging semiconductors such as perovskites, quantum dots, two-dimensional materials or organics can be prone to misinterpretation as discussed by the authors.
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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.
References
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Journal Article
Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
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