High-Performance Two-Dimensional Perovskite Ca2Nb3O10 UV Photodetectors

被引：136

作者：

Zhang, Yong ^{[1
]}

Li, Siyuan ^{[1
]}

Li, Ziliang ^{[1
]}

Liu, Hui ^{[1
]}

Liu, Xinya ^{[1
]}

Chen, Jiaxin ^{[1
]}

Fang, Xiaosheng ^{[1
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

来源：

NANO LETTERS | 2021年 / 21卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Ca2Nb3O10; UV photodetectors; two-dimensional; high performance; NANOSHEETS; NETWORKS; HYDROGEN;

D O I：

10.1021/acs.nanolett.0c03759

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We first report two-dimensional (2D) perovskite Ca2Nb3O10 ultraviolet photodetectors (UV PDs), which are prepared via a facile calcination-exfoliation method. The 2D Ca2Nb3O10 PDs demonstrate high performance at 3 V at 280 nm, high responsivity (14.94 A W-1), high detectivity (8.7 x 10 13 Jones), high spectral selectivity (R-280/R-400 = 8.84 X 10(3)), fast speed (0.08/5.6 ms), and long-term stability, exceeding those of most reported UV PDs. Furthermore, the Ca2Nb3O10 PDs integrated with poly(ethylene terephthalate) (PET) show excellent flexibility and have high linear dynamic range (96 dB). Our work provides a general strategy for searching new UV PDs based on numerous layered niobates. The Ca2Nb3O10 nanosheets may be one of the optimum semiconductor materials for next-generation high-performance UV PDs.

引用

页码：382 / 388

页数：7

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