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Self-Powered Photodetector Using Two-Dimensional Ferroelectric Dion–Jacobson Hybrid Perovskites
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-10-14 , DOI: 10.1021/jacs.0c08189 In-Hyeok Park 1 , Ki Chang Kwon 1 , Ziyu Zhu 1 , Xiao Wu 1 , Runlai Li 1 , Qing-Hua Xu 1 , Kian Ping Loh 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-10-14 , DOI: 10.1021/jacs.0c08189 In-Hyeok Park 1 , Ki Chang Kwon 1 , Ziyu Zhu 1 , Xiao Wu 1 , Runlai Li 1 , Qing-Hua Xu 1 , Kian Ping Loh 1
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Dion-Jacobson (DJ) phase organic-inorganic hybrid perovskites (OIHPs) have emerged as promising alternatives to Ruddlesden-Poppers perovskites because of their chemical stability and ferroelectric phase. Here we fabricate a ferroelectricity-modulated photodetector based on the n = 2 homologue of the ferroelectric two-dimensional DJ-OIHP (AMP)(MA)Pb2I7 (DJPn=2, AMP = 4-(aminomethyl)piperidinium; MA = methylammonium), which shows an out-of-plane polarization and a saturated polarization (Ps) value of 3.7 μC/cm2. The coercive field of DJPn=2 (0.34 kV/cm) is lower than that for the n = 1 homologue (AMP)PbI4 (DJPn=1,0.4 kV/cm). DJPn=2 has a much longer carrier lifetime and absorption edge (580 nm, 2.13 eV) in comparison to DJPn=1 (523 nm, 2.37 eV); thus, DJPn=2 can be used for efficient photodetection in the visible range, in which a responsivity of 0.16 mA/W was achieved at 532 nm. The influence of remnant polarization on the direction and magnitude of the photocurrent was also demonstrated.
中文翻译：
使用二维铁电 Dion-Jacobson 混合钙钛矿的自供电光电探测器
由于其化学稳定性和铁电相，Dion-Jacobson (DJ) 相有机-无机杂化钙钛矿 (OIHP) 已成为 Ruddlesden-Poppers 钙钛矿的有前途的替代品。在这里，我们基于铁电二维 DJ-OIHP (AMP)(MA)Pb2I7 (DJPn=2，AMP = 4-(氨基甲基)哌啶鎓；MA = 甲基铵）的 n = 2 同系物制造了一个铁电调制光电探测器，它显示出面外极化和 3.7 μC/cm2 的饱和极化 (Ps) 值。DJPn=2 (0.34 kV/cm) 的矫顽场低于 n = 1 同系物 (AMP) PbI4 (DJPn=1,0.4 kV/cm) 的矫顽场。与 DJPn=1 (523 nm, 2.37 eV) 相比，DJPn=2 具有更长的载流子寿命和吸收边 (580 nm, 2.13 eV)；因此，DJPn=2 可用于可见光范围内的高效光电探测，其中响应率为 0。在 532 nm 处达到 16 mA/W。还证明了剩余极化对光电流的方向和大小的影响。
更新日期：2020-10-14
中文翻译：
使用二维铁电 Dion-Jacobson 混合钙钛矿的自供电光电探测器
由于其化学稳定性和铁电相，Dion-Jacobson (DJ) 相有机-无机杂化钙钛矿 (OIHP) 已成为 Ruddlesden-Poppers 钙钛矿的有前途的替代品。在这里，我们基于铁电二维 DJ-OIHP (AMP)(MA)Pb2I7 (DJPn=2，AMP = 4-(氨基甲基)哌啶鎓；MA = 甲基铵）的 n = 2 同系物制造了一个铁电调制光电探测器，它显示出面外极化和 3.7 μC/cm2 的饱和极化 (Ps) 值。DJPn=2 (0.34 kV/cm) 的矫顽场低于 n = 1 同系物 (AMP) PbI4 (DJPn=1,0.4 kV/cm) 的矫顽场。与 DJPn=1 (523 nm, 2.37 eV) 相比，DJPn=2 具有更长的载流子寿命和吸收边 (580 nm, 2.13 eV)；因此，DJPn=2 可用于可见光范围内的高效光电探测，其中响应率为 0。在 532 nm 处达到 16 mA/W。还证明了剩余极化对光电流的方向和大小的影响。
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