Ultra‐Flexible Pixelated Perovskite Photodetectors Enabled by Honeycomb Polymer Grids for High‐Resolution Imaging
Abstract
AbstractA nature‐inspired fabrication method based on a photolithography‐free flexible polymer grid is reported for high‐resolution pixelation of perovskite photodiode arrays with exceptional mechanical ductility and a morphology resembling that of natural compound eyes. The resulting pixelated perovskite photosensitive layer has a ≈1 µm pixel size with 2000 Pixels per inch (PPI) resolution when fully assembled as a photodetector array, delivering a detectivity of >1013 Jones while providing cross‐talk free imaging. Using a polymer grid effectively releases stress on the perovskite platform, greatly increasing the mechanical agility of the otherwise brittle perovskite film. This novel fabrication methodology and device design offer new possibilities for applications in robotics, biomedical imaging, and virtual and augmented reality.
Article Details
Authors (18)
Ding Zheng
State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China (UESTC) Chengdu China
Zhaoqian Xie
Wei Huang
Dongjun Bai
State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial Equipment Dalian University of Technology Dalian 116024 P. R China
Jaehyun Kim
Dan Zhao
Fei Qin
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Dayong Zhang
Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University
Joon‐Seok Kim
Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
Jianhua Chen
Department of Chemical Science and Technology, Yunnan University
Yao Yao
Zhi Wang
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials
Sharma Sakshi
School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USA
Juan‐Pablo Correa‐Baena
School of Materials Science and Engineering Georgia Institute of Technology Atlanta USA
Lincoln J. Lauhon
Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
Mercouri G Kanatzidis
Department of Chemistry and the Materials Research Center Northwestern University Evanston IL 60208 USA
Tobin J. Marks
Department of Chemistry, the Materials Research Center, Trienens Institute for Sustainability and Energy
Antonio Facchetti
Department of Chemistry, the Materials Research Center, Trienens Institute for Sustainability and Energy