Two-Dimensional Hybrid Composites of SnS2 Nanosheets Array Film with Graphene for Enhanced Photoelectric Performance

被引：16

作者：

Fang, Feier ^{[1
]}

Li, Henan ^{[2
]}

Yao, Huizhen ^{[1
]}

Jiang, Ke ^{[1
]}

Liu, Zexiang ^{[1
]}

Lin, Congjian ^{[1
]}

Chen, Fuming ^{[3
]}

Wang, Ye ^{[4
]}

Liu, Lai ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Optoelect Engn,Minist Educ, SZU NUS Collaborat Innovat Ctr Optoelect Sci & Te, Int Collaborat Lab 2D Mat Optoelect Sci & Technol, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China

[3] South China Normal Univ, Sch Phys & Telecommun Engn, Guangzhou 510006, Guangdong, Peoples R China

[4] Zhengzhou Univ, Sch Phys & Engn, Key Lab Mat Phys Minist Educ, Zhengzhou 450052, Henan, Peoples R China

来源：

NANOMATERIALS | 2019年 / 9卷 / 08期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

graphene; SnS2; heterojunction; charge separation; photodetectors; LAYER; PHOTODETECTORS; PHOTOCATALYSIS; ULTRAVIOLET;

D O I：

10.3390/nano9081122

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two-dimensional (2D) metal dichalcogenides have attracted considerable attention for use in photoelectric devices due to their unique layer structure and strong light-matter interaction. In this paper, vertically grown SnS2 nanosheets array film was synthesized by a facile chemical bath deposition (CBD). The effects of deposition time and annealing temperature on the quality of SnS2 films was investigated in detail. By optimizing the preparation conditions, the SnS2 array film exhibited efficient photoelectric detection performance under sunlight. Furthermore, in order to improve the performance of the photodetector based on SnS2 nanosheets film, a transparent graphene film was introduced as the hole-transport layer by wet-chemical method directly transferring techniques. Graphene/SnS2 nanosheets array film heterojunction photodetectors exhibit enhanced photoresponsivity. The light on/off ratio of the photodetector based on graphene/SnS2 was 1.53, about 1.4 times higher than that of the pristine SnS2 array films. The improved photoresponse performance suggested that the effective heterojunction between vertical SnS2 nanosheets array film and graphene suppresses the recombination of photogenerated carriers. The results indicate that the graphene/SnS2 heterojunction photodetectors have great potential in photodetection devices.

引用

页数：11

共 52 条

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