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Layered Perovskites Enhanced Perovskite Photodiodes
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-02-10 , DOI: 10.1021/acs.jpclett.1c00064 Ruiming Li 1 , Yalun Xu 1 , Wei Li 1 , Yanyan Li 1 , Jiali Peng 1 , Mingfei Xu 1 , Qianqian Lin 1
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-02-10 , DOI: 10.1021/acs.jpclett.1c00064 Ruiming Li 1 , Yalun Xu 1 , Wei Li 1 , Yanyan Li 1 , Jiali Peng 1 , Mingfei Xu 1 , Qianqian Lin 1
Affiliation
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Recently, two-dimensional layered perovskites have emerged as effective additives for stabilizing conventional three-dimensional metal halide perovskites. With the addition of layered perovskites, the perovskite-based devices also exhibited enhanced optoelectronic properties, such as reduced nonradiative recombination and ionic migration, strengthened crystallinity, and anisotropic charge transport. However, the influence of the large organic cations on the performance metrics of the photodiodes is not fully understood. In this work, we systematically investigate the device performance and related optoelectronic features of the layered perovskite-enhanced perovskite photodiodes. In particular, with the addition of large organic cations to the FA0.83Cs0.17PbI3 perovskite matrix, the devices exhibited reduced dark current and noise, increased detectivity of >1013 Jones, and a consistent high speed of <100 ns. More importantly, the layered perovskite-enhanced photodiodes exhibited less hysteresis and higher breakdown voltages.
中文翻译：
层状钙钛矿增强型钙钛矿光电二极管
最近，二维层状钙钛矿已经出现，作为稳定常规三维金属卤化物钙钛矿的有效添加剂。随着层状钙钛矿的加入，基于钙钛矿的器件还表现出增强的光电性能，例如减少了非辐射复合和离子迁移，增强了结晶度以及各向异性电荷传输。但是，尚未完全了解大有机阳离子对光电二极管性能指标的影响。在这项工作中，我们系统地研究了层状钙钛矿增强型钙钛矿光电二极管的器件性能和相关的光电特性。特别是在FA 0.83 Cs 0.17 PbI 3中添加了大型有机阳离子在钙钛矿基质中，这些器件表现出降低的暗电流和噪声，提高的检测率> 10 13 Jones和稳定的<100 ns的高速。更重要的是，层状钙钛矿增强型光电二极管表现出较小的磁滞现象和较高的击穿电压。
更新日期：2021-02-18
中文翻译：
层状钙钛矿增强型钙钛矿光电二极管
最近，二维层状钙钛矿已经出现，作为稳定常规三维金属卤化物钙钛矿的有效添加剂。随着层状钙钛矿的加入，基于钙钛矿的器件还表现出增强的光电性能，例如减少了非辐射复合和离子迁移，增强了结晶度以及各向异性电荷传输。但是，尚未完全了解大有机阳离子对光电二极管性能指标的影响。在这项工作中，我们系统地研究了层状钙钛矿增强型钙钛矿光电二极管的器件性能和相关的光电特性。特别是在FA 0.83 Cs 0.17 PbI 3中添加了大型有机阳离子在钙钛矿基质中，这些器件表现出降低的暗电流和噪声，提高的检测率> 10 13 Jones和稳定的<100 ns的高速。更重要的是，层状钙钛矿增强型光电二极管表现出较小的磁滞现象和较高的击穿电压。
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