A reduced-dimensional polar hybrid perovskite for self-powered broad-spectrum photodetection

被引：28

作者：

Li, Dong ^{[1
,2
]}

Wu, Wentao ^{[1
,2
]}

Han, Shiguo ^{[1
,2
,3
]}

Liu, Xitao ^{[1
,2
,3
]}

Peng, Yu ^{[1
,2
]}

Li, Xiaoqi ^{[1
,2
]}

Li, Lina ^{[1
,2
,3
]}

Hong, Maochun ^{[1
,2
,3
]}

Luo, Junhua ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

[2] Fujian Sci & Technol Innovat Lab Optoelect Inform, Fuzhou 350108, Fujian, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHEMICAL SCIENCE | 2021年 / 12卷 / 08期

基金：

中国国家自然科学基金;

关键词：

50;

D O I：

10.1039/d0sc06112c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polar hybrid perovskites have been explored for self-powered photodetection benefitting from prominent transport of photo-induced carriers and the bulk photovoltaic effect (BPVE). However, these self-powered photodetection ranges are relatively narrow depending on their intrinsic wide bandgaps (>2.08 eV), and the realization of broad-spectrum self-powered photodetection is still a difficult task. Herein, we successfully obtained a polar multilayered perovskite, (I-BA)(2)(MA)(2)Pb3I10 (IMP, MA(+) = methylammonium and I-BA(+) = 4-iodobutylammonium), via rational dimension reduction of CH3NH3PbI3. It features the narrowest bandgap of 1.71 eV in a BPV material. As a consequence, the integration of narrow bandgap and BPVE causes the self-powered photodetection to extend to 724 nm for IMP, and a repeatable photovoltaic current reaching 1.0 mu A cm(-2) is acquired with a high "on/off" ratio of similar to 10(3) and photodetectivity (similar to 10(9) Jones) at zero bias. This innovative research provides a foothold for adjusting the physical properties of hybrid perovskites and will expand their potential for self-powered broad-spectrum detection.

引用

页码：3050 / 3054

页数：5

共 50 条

[1] A High-Performance Self-Powered Photodetector Based on Monolayer MoS2/Perovskite Heterostructures [J].