Hollow Spherical Nanoshell Arrays of 2D Layered Semiconductor for High-Performance Photodetector Device

被引：56

作者：

Chen, Xiaoshuang ^{[1
,2
]}

Yang, Huihui ^{[1
]}

Liu, Guangbo ^{[1
]}

Gao, Feng ^{[1
]}

Dai, Mingjin ^{[1
]}

Hu, Yunxia ^{[1
]}

Chen, Hongyu ^{[1
]}

Cao, Wenwu ^{[3
]}

Hu, PingAn ^{[1
,4
]}

Hu, Wenping ^{[2
,5
]}

机构：

[1] Harbin Inst Technol, Minist Educ, Key Lab Microsyst & Microstruct, Harbin 150080, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, Dept Phys, Harbin 150080, Heilongjiang, Peoples R China

[3] Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Harbin 150080, Heilongjiang, Peoples R China

[4] Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150080, Heilongjiang, Peoples R China

[5] Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2018年 / 28卷 / 08期

基金：

中国国家自然科学基金;

关键词：

2D materials; hollow spheres; MoSe2; nanoshell arrays; photodetectors; SENSITIZED SOLAR-CELLS; SPHERES; HETEROSTRUCTURES; GROWTH; MICROSPHERES;

D O I：

10.1002/adfm.201705153

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Well-defined hollow spherical nanoshell arrays of 2D transitional metal dichalcogenide (TMDC) nanomaterials for MoSe2 and MoS2 are grown via chemical vapor deposition technique for the first time. The hollow sphere arrays display the uniform dimensions of approximate to 450 nm with the shell thickness of approximate to 10 nm. The unique hollow sphere architecture with increased active surface area is forecasted to supply more efficient route to improve light-harvesting efficiency through repeated light reflection and scattering inside the hollow structure without decay of response and recovery speed, because exceptional "SP-SP" junction barriers conducting mechanism can facilitate carriers tunneling and transport during the electron transfer procedure within the present particular structure. The MoSe2 hollow sphere photodetector exhibits an outstanding responsivity (8.9 A W-1), which is tenfold higher than that for MoSe2 compact film (0.9 A W-1), fast response and recovery speed, and good durability under illumination wavelength of 365 nm. Meanwhile, MoSe2 hollow sphere arrays on flexible polyethylene terephthalate substrates reveal excellent bending stability. Therefore, this research indicates that unique hollow sphere architecture of 2D TMDC materials will be an anticipated avenue for efficient photodetector devices with far-ranging capability.

引用

页数：9

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