Wei Yuanzhi, Feng Guitao, Mao Peng, Luan Yigang, Zhuang Jing, Chen Ningli, Yang Haixia, Li Weiwei, Yang Shiyong, Wang Jizheng
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.
University of Chinese Academy of Sciences , Beijing 100049 , China.
ACS Appl Mater Interfaces. 2020 Feb 19;12(7):8826-8834. doi: 10.1021/acsami.9b19467. Epub 2020 Feb 5.
Double-cable conjugated polymers and two-dimensional (2D) perovskites are both promising materials for next-generation photodetectors (PDs) due to their solution processibility and tunable optoelectronic properties. In this work, a lateral PD is designed by layering a double-cable conjugated polymer film atop a 2D Ruddlesden-Popper perovskite film. Compared to the corresponding single-layer polymer and perovskite PDs, the heterojunction device exhibits greatly improved performance with a high responsivity of 27.06 A W, an on/off ratio of 1379, and a short rise/decay time of 3.53/3.78 ms. In addition, a flexible device using polyimide as the substrate is successfully fabricated and exhibits comparable performance with the device on glass. This work demonstrates the great potential of double-cable polymer/2D perovskite heterojunctions in future flexible optoelectronics.
双电缆共轭聚合物和二维（2D）钙钛矿都是用于下一代光电探测器（PD）的有前途的材料，因为它们具有溶液可加工性和可调节的光电特性。在这项工作中，通过在二维Ruddlesden-Popper钙钛矿薄膜上堆叠双电缆共轭聚合物薄膜来设计横向光电探测器。与相应的单层聚合物和钙钛矿光电探测器相比，该异质结器件表现出大大提高的性能，具有27.06 A/W的高响应度、1379的开/关比以及3.53/3.78 ms的短上升/下降时间。此外，成功制造了以聚酰亚胺为衬底的柔性器件，其性能与玻璃衬底上的器件相当。这项工作证明了双电缆聚合物/二维钙钛矿异质结在未来柔性光电子学中的巨大潜力。
