Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 12, Pages 10921-10928Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b02213
Keywords
perovskite; flexible photodetector; paper electronics; origami; 3D
Funding
- National key Basic Research Program of China (973 Program) [2013CB632900]
- National Science Foundation of China [91333109, 21671115]
- Tsinghua University Initiative Scientific Research Program [20131089202, 20161080165]
- Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics [KF201516]
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Flexible photodetectors are attracting substantial attention because of their promising applications in bendable display and smart clothes which cannot be fulfilled by the existing rigid counterparts. In this work, we demonstrate a newly designed photodetector constructed on the common printing paper. Pencil trace was applied as the graphite electrode. With such a simple and convenient method, the as prepared photodetector exhibited a satisfactory responsivity of 4.4 mA/W, on/off current ratio of 32, coupled with a high response speed of <10 ms. It also demonstrated excellent mechanical flexibility and durability. Most inspiringly, by an ingenious origami, we created the first perovskite photodetector with a 3D configuration. The cubic photodetector array displayed an excellent spatial recognition ability which could not be achieved in all the previously reported 2D photodetectors. Such a fusion of materials science and the art of origami provides a robust strategy for the design of low-cost flexible electronics, especially for the applications in 3D configurations.
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