%0 Journal Article %1 ADMA:ADMA201703209 %A Bao, Chunxiong %A Chen, Zhaolai %A Fang, Yanjun %A Wei, Haotong %A Deng, Yehao %A Xiao, Xun %A Li, Lingliang %A Huang, Jinsong %D 2017 %J Advanced Materials %K crystal perovskite photodetector single %P n/a--n/a %R 10.1002/adma.201703209 %T Low-Noise and Large-Linear-Dynamic-Range Photodetectors Based on Hybrid-Perovskite Thin-Single-Crystals %U http://dx.doi.org/10.1002/adma.201703209 %X 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 CH3NH3PbBr3 and CH3NH3PbI3 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 CH3NH3PbBr3 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.

@article{ADMA:ADMA201703209, 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 CH3NH3PbBr3 and CH3NH3PbI3 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 CH3NH3PbBr3 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.}, added-at = {2017-08-31T15:57:53.000+0200}, author = {Bao, Chunxiong and Chen, Zhaolai and Fang, Yanjun and Wei, Haotong and Deng, Yehao and Xiao, Xun and Li, Lingliang and Huang, Jinsong}, biburl = {https://www.bibsonomy.org/bibtex/2fbdb6d4737b163dbfcb96db129ab64ef/fabianopkm}, doi = {10.1002/adma.201703209}, interhash = {8e4b1dcae0ee485922fd62f546db1a2b}, intrahash = {fbdb6d4737b163dbfcb96db129ab64ef}, issn = {1521-4095}, journal = {Advanced Materials}, keywords = {crystal perovskite photodetector single}, pages = {n/a--n/a}, timestamp = {2017-08-31T15:57:53.000+0200}, title = {Low-Noise and Large-Linear-Dynamic-Range Photodetectors Based on Hybrid-Perovskite Thin-Single-Crystals}, url = {http://dx.doi.org/10.1002/adma.201703209}, year = 2017 }