Ultra-Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

被引：41

作者：

Li, Xu ^{[1
]}

Liu, Chang ^{[1
]}

Ding, Feng ^{[2
]}

Lu, Zheyi ^{[1
]}

Gao, Peng ^{[3
]}

Huang, Ziwei ^{[2
]}

Dang, Weiqi ^{[2
]}

Zhang, Liqiang ^{[2
]}

Lin, Xiaohui ^{[2
]}

Ding, Shuimei ^{[1
]}

Li, Bailing ^{[1
,2
]}

Huangfu, Ying ^{[2
]}

Shen, Xiaohua ^{[2
]}

Li, Bo

Zou, Xuming ^{[1
]}

Liu, Yuan ^{[1
]}

Liao, Lei ^{[1
]}

Wang, Yiliu ^{[1
]}

Duan, Xidong ^{[2
]}

机构：

[1] Hunan Univ, Sch Phys & Elect, Changsha 410082, Peoples R China

[2] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Peoples R China

[3] South China Normal Univ, Inst Semicond, Guangzhou 510631, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2023年 / 33卷 / 15期

基金：

中国国家自然科学基金;

关键词：

all-inorganic metal halide perovskites; monocrystalline CsPbCl3 thin films; ultraviolet imaging sensing; ultraviolet photodetectors; vapor-phase epitaxy; CHARGE-LIMITED CURRENTS; ROOM-TEMPERATURE; HALIDE PEROVSKITE; CARRIER LIFETIME; HIGH-EFFICIENCY; SOLAR-CELLS; NANOCRYSTALS; ENHANCEMENT; DEPOSITION; TRANSPORT;

D O I：

10.1002/adfm.202213360

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The detection of ultraviolet (UV) radiation with effective performance and robust stability is essential to practical applications. Metal halide single-crystal perovskites (ABX(3)) are promising next-generation materials for UV detection. The device performance of all-inorganic CsPbCl3 photodetectors (PDs) is still limited by inner imperfection of crystals grown in solution. Here wafer-scale single-crystal CsPbCl3 thin films are successfully grown by vapor-phase epitaxy method, and the as-constructed PDs under UV light illumination exhibit an ultralow dark current of 7.18 pA, ultrahigh ON/OFF ratio of approximate to 5.22 x 10(5), competitive responsivity of 32.8 A W-1, external quantum efficiency of 10867% and specific detectivity of 4.22 x 10(12) Jones. More importantly, they feature superb long-term stability toward moisture and oxygen within twenty-one months, good temperature tolerances at low and high temperatures. The ability of the photodetector arrays for excellent UV light imaging is further demonstrated.

引用

页数：12

共 81 条

[81] Recent Advances in Enhancing and Enriching the Optical Properties of Cl-Based CsPbX3 Nanocrystals [J].

Zhu, Xun ;

Ge, Lei ;

Wang, Yang ;

Li, Min ;

Zhang, Runqi ;

Xu, Mingchuan ;

Zhao, Zhihao ;

Lv, Wenzhen ;

Chen, Runfeng .

ADVANCED OPTICAL MATERIALS, 2021, 9 (16)

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