Solvent-Assisted Thermal-Pressure Strategy for Constructing High-Quality CH3 NH3 PbI3- x Cl x Films as High-Performance Perovskite Photodetectors

ACS Applied Materials & Interfaces
Ning DongChing-Ping Wong

Abstract

High-quality CH3NH3PbI3-xCl x films have attracted research interests in photoelectric devices because of their improved carrier diffusion length and charge mobility. Herein, a solvent-assisted thermal-pressure strategy is developed to promote the secondary growth of perovskite grains in the films. Highly oriented perovskite films are then obtained with large-sized grains (5-10 μm). As a consequence, the photodetectors based on the high-quality CH3NH3PbI3- xCl x films exhibit enhanced ophtoelectrical performance, including high on/off ratio (>2.1 × 104), fast response time (54/63 μs), and high detectivity (∼1.3 × 1012). This work suggests an effective approach for high-quality perovskite films, which will be promising candidates for other high-efficiency photoelectric devices.

References

Mar 19, 2014·Nature Materials·Guichuan XingTze Chien Sum
Apr 9, 2014·Nature Communications·Valerio D'InnocenzoAnnamaria Petrozza
Apr 24, 2014·Advanced Materials·Christian WehrenfennigLaura M Herz
Aug 5, 2014·Nature Nanotechnology·Zhi-Kuang TanRichard H Friend
Nov 21, 2014·Nature Communications·Letian DouYang Yang
Oct 21, 2015·ACS Applied Materials & Interfaces·Jiang LiuWoonming Lau
Sep 14, 2017·ACS Applied Materials & Interfaces·Yongchao MaKwang Ho Kim

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