High-gain visible-blind UV photodetectors based on chlorine-doped n-type ZnS nanoribbons with tunable optoelectronic properties

被引:68
作者
Yu, Yongqiang [1 ,2 ]
Jie, Jiansheng [1 ]
Jiang, Peng [1 ]
Wang, Li [1 ]
Wu, Chunyan [1 ]
Peng, Qiang [1 ]
Zhang, Xiwei [1 ]
Wang, Zhi [1 ]
Xie, Chao [1 ]
Wu, Di [2 ]
Jiang, Yang [2 ]
机构
[1] Hefei Univ Technol, Sch Elect Sci & Appl Phys, Hefei 230009, Anhui, Peoples R China
[2] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China
基金
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词
ULTRAVIOLET-LIGHT SENSORS; OPTICAL-PROPERTIES; NANOBELTS; NANOWIRES; PRECIPITATION; TRANSISTORS; OXIDE;
D O I
10.1039/c1jm11408e
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Efficient n-type doping of ZnS nanoribbons (NRs) were accomplished by using chlorine (Cl) as the dopant via thermal evaporation. An indium tin oxide (ITO) transparent electrode was used to achieve ohmic contact to the ZnS: Cl NRs. The conductivity of the Cl-doped ZnS NRs was significantly improved as compared with the undoped ones and could be tuned to a wide range of 3-4 orders of magnitude by adjusting the Cl doping level. High-performance nano-photodetectors were constructed based on the ZnS: Cl NRs, which show high sensitivity to the UV light while are nearly blind to the visible light. Notably, the ZnS: Cl NR photodetectors have a photoconductive gain as high as similar to 10(7), which is amongst the highest values obtained for UV nano-photodetectors so far. Our results demonstrate that the n-type ZnS NRs with tunable optoelectronic properties are promising building blocks for nano-optoelectronic devices.
引用
收藏
页码:12632 / 12638
页数:7
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