离子液体助力高性能自供电 CsPbBr 钙钛矿纳米网光电探测器。
Ionic liquid enables high-performance, self-powered CsPbBr perovskite nanonet photodetector.
机构信息
International School of Microelectronics, Dongguan University of Technology, Dongguan, Guangdong, 523808, China.
Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan, 430205, China.
出版信息
Chem Commun (Camb). 2023 Jul 6;59(55):8544-8547. doi: 10.1039/d3cc02094k.
We fabricated high-quality CsPbBr perovskite nanonet films with the assistance of polystyrene spheres, and constructed self-powered photodetectors (PDs) with an ITO/SnO/CsPbBr/carbon structure. By passivating the nanonet with different concentrations of 1-butyl-3-methylimidazolium bromide (BMIMBr) ionic liquid, we found that as the concentration of BMIMBr increases, the dark current of the device first decreases and then gradually increases, while the photocurrent remains essentially unchanged. Finally, the PD with 1 mg mL BMIMBr ionic liquid exhibited the best performance with a switch ratio of about 1.35 × 10, a linear dynamic range extending to 140 dB, and responsivity and detectivity values of 0.19 A W and 4.31 × 10 Jones, respectively. These results provide an important reference for fabricating perovskite PDs.
我们在聚苯乙烯球的辅助下制备了高质量的 CsPbBr 钙钛矿纳米网薄膜，并构建了具有 ITO/SnO/CsPbBr/碳结构的自供电光电探测器（PD）。通过用不同浓度的 1-丁基-3-甲基咪唑溴化盐（BMIMBr）离子液体钝化纳米网，我们发现随着 BMIMBr 浓度的增加，器件的暗电流先减小后逐渐增大，而光电流基本保持不变。最后，具有 1 mg mL BMIMBr 离子液体的 PD 表现出最佳性能，开关比约为 1.35×10，线性动态范围扩展到 140 dB，响应率和探测率分别为 0.19 A W 和 4.31×10 琼斯。这些结果为制备钙钛矿 PD 提供了重要参考。
Zotero 插件