Photodetectors with ultra-high detectivity based on stabilized all-inorganic perovskite CsPb0.922Sn0.078I3 nanobelts

被引：49

作者：

Du, Zhentao ^{[1
,2
]}

Fu, Dingfa ^{[1
]}

Yang, Tao ^{[2
]}

Fang, Zhi ^{[2
]}

Liu, Wenna ^{[2
]}

Gao, Fengmei ^{[2
]}

Wang, Lin ^{[2
]}

Yang, Zuobao ^{[2
]}

Teng, Jie ^{[1
]}

Zhang, Hui ^{[1
]}

Yang, Weiyou ^{[2
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Ningbo Univ Technol, Inst Mat, Ningbo 315016, Zhejiang, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2018年 / 6卷 / 23期

基金：

中国国家自然科学基金;

关键词：

SOLAR-CELLS; UV PHOTODETECTORS; ROOM-TEMPERATURE; NANOCRYSTALS; PERFORMANCE; NANOWIRES; EFFICIENT; SUBSTITUTION; BAND;

D O I：

10.1039/c8tc01837e

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Although significant progress has been made in the development of all-inorganic CsPbI3 (X = Br, Cl and I) perovskites, some crucial points typically concerning their stability and toxicity due to the presence of Pb are yet to be addressed. In the present study, we report the growth of qualified all-inorganic CsPbI3 perovskite nanobelts with high yield and purity via a solvothermal route; herein, Sn has been incorporated to substitute Pb to reduce the toxicity of these nanobelts. XPS analyses showed that the Sn-doped CsPbI3 nanobelts were substantially stabilized and exhibited satisfied stability for up to 15 days when maintained under air conditions. The as-constructed photodetectors (PDs) based on a single CsPb0.922Sn0.078I3 nanobelt displayed overall excellent performance with an ultrahigh detectivity of up to 6.43 x 10(13) Jones, which was comparable to the best values of all-inorganic perovskite PDs reported to date.

引用

页码：6287 / 6296

页数：10

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