Premium
Hollow Spherical Nanoshell Arrays of 2D Layered Semiconductor for High‐Performance Photodetector Device
Author(s) -
Chen Xiaoshuang,
Yang Huihui,
Liu Guangbo,
Gao Feng,
Dai Mingjin,
Hu Yunxia,
Chen Hongyu,
Cao Wenwu,
Hu PingAn,
Hu Wenping
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201705153
Subject(s) - materials science , nanoshell , photodetector , optoelectronics , responsivity , semiconductor , chemical vapor deposition , polyethylene terephthalate , nanomaterials , wavelength , nanotechnology , composite material , plasmon
Well‐defined hollow spherical nanoshell arrays of 2D transitional metal dichalcogenide (TMDC) nanomaterials for MoSe 2 and MoS 2 are grown via chemical vapor deposition technique for the first time. The hollow sphere arrays display the uniform dimensions of ≈450 nm with the shell thickness of ≈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 MoSe 2 hollow sphere photodetector exhibits an outstanding responsivity (8.9 A W −1 ), which is tenfold higher than that for MoSe 2 compact film (0.9 A W −1 ), fast response and recovery speed, and good durability under illumination wavelength of 365 nm. Meanwhile, MoSe 2 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.