A Self‐Powered and Stable All‐Perovskite Photodetector–Solar Cell Nanosystem,Advanced Functional Materials

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A Self‐Powered and Stable All‐Perovskite Photodetector–Solar Cell Nanosystem
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2016-01-13 , DOI: 10.1002/adfm.201504477
Hao Lu ₁ , Wei Tian ₁ , Fengren Cao ₁ , Yulong Ma ₁ , Bangkai Gu ₁ , Liang Li ₁

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Hybrid organic–inorganic perovskites have attracted intensive interest as light absorbing materials in solid‐state solar cells. Herein, we demonstrate a high‐performance CH₃NH₃PbI₃‐based perovskite photodetector constructed on the flexible indium tin oxide (ITO) coated substrate even after 200 bending cycles. The as‐fabricated devices show high responsivity, broad spectrum response from ultraviolet to whole visible light, long‐term stability, and high on‐off ratio. Particularly, atomic layer deposition technique was used to deposit the ultrathin Al₂O₃ film on devices, functioning as a protection layer to effectively enhance the stability and durability of perovskite photodetectors. The first all‐perovskite self‐powered nanosystem was successfully assembled by integrating a perovskite solar cell with a perovskite photodetector. Driven by the perovskite solar cell, the photodetector exhibits fast and stable response to illuminated light at a low working voltage less than 1.0 V. This stable integrated nanosystem has promising applications in which photodetectors can work in harsh environments without external power sources.

中文翻译：

一个自供电且稳定的钙钛矿光电探测器-太阳能电池纳米系统

作为固态太阳能电池中的光吸收材料，有机-无机杂化钙钛矿已经引起了广泛的关注。本文中，我们演示了即使在200次弯曲循环后，仍可以在涂覆有柔性铟锡氧化物（ITO）的基板上构造高性能的基于CH ₃ NH ₃ PbI ₃的钙钛矿光电探测器。所制造的设备显示出高响应性，从紫外线到可见光的广谱响应，长期稳定性以及高开/关比。特别地，原子层沉积技术被用于沉积超薄的Al ₂ O _3。器件上的薄膜，起着保护层的作用，有效地增强了钙钛矿光电探测器的稳定性和耐用性。通过将钙钛矿太阳能电池与钙钛矿光电探测器集成在一起，成功组装了第一个全钙钛矿自供电纳米系统。在钙钛矿太阳能电池的驱动下，该光电探测器在低于1.0 V的低工作电压下对照明光表现出快速而稳定的响应。这种稳定的集成纳米系统具有广阔的应用前景，其中光电探测器可以在恶劣的环境中工作而无需外部电源。

更新日期：2016-01-13

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