Flexible and Filter-Free Color-Imaging Sensors with Multicomponent Perovskites Deposited Using Enhanced Vapor Technology.

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Yantao ChenShi-Jin Ding

Abstract

Halide perovskites are promising photoactive materials for filter-free color-imaging sensors owing to their outstanding optoelectronic properties, tunable bandgaps, and suitability for large-scale fabrication. However, producing patterned perovskite films of sufficiently high quality for such applications poses a challenge for existing fabrication methods: using solution processes to prepare patterned perovskite films is complicated, while evaporation methods often result in perovskite photodetectors with limited performance. In this paper, the authors report the development of an improved evaporation method in which substrates are treated with a brominated (3-aminopropyl) triethoxysilane self-assembled monolayer to improve the properties of the patterned perovskite films. The resulting perovskite photodetectors exhibit significantly enhanced photosensitivity and long-term stability (exceeding 100 days). Additionally, the polymer substrates facilitate device flexibility. Finally, perovskites comprising three different halide components, each with a different bandgap, are integrated into a device array using the developed evaporation technology, yielding sensors that enable the discrimination of red, green, and blue colors. Thus...Continue Reading

References

May 18, 2010·Nature Nanotechnology·Gerasimos Konstantatos, Edward H Sargent
Jan 17, 2015·Journal of the American Chemical Society·Linfeng LiuHongwei Han
Aug 12, 2015·The Journal of Physical Chemistry Letters·Johannes SchlipfPeter Müller-Buschbaum
Dec 15, 2016·Journal of the American Chemical Society·Jia LiangJie Liu
Jan 24, 2017·Advanced Materials·Xianxiong HeHongbing Fu
Jan 31, 2018·Angewandte Chemie·Jialong DuanQunwei Tang
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Mar 2, 2019·Chemical Reviews·Philip SchulzAntoine Kahn
Oct 6, 2020·Light, Science & Applications·Mei-Na ZhangShi-Jin Ding

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