Energy-Efficient Hydrogenated Zinc Oxide Nanoflakes for High-Performance Self-Powered Ultraviolet Photodetector

被引：129
作者：
Boruah, Buddha Deka [1 ]
Misra, Abha [1 ]
机构：
[1] Indian Inst Sci, Dept Instrumentat & Appl Phys, Bangalore 560012, Karnataka, India
来源：
ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 28期
关键词：
zinc oxide; nanorods; nanoflakes; hydrogenation; self-powered ultraviolet photodetector; ZNO NANOROD ARRAYS; QUANTUM DOTS; NANOWIRES; PHOTORESPONSE; FABRICATION; NANOSHEETS; EMISSION; GROWTH; CDS;
D O I：
10.1021/acsami.6b04954
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Light absorption efficiency and doping induced charge carrier density play a vital role in self-powered optoelectronic devices. Unique vanadium-doped zinc oxide nanoflake array (VZnO NFs) is fabricated for self-powered ultraviolet (UV) photodetection. The light harvesting efficiency drastically improved from 84% in ZnO NRs to 98% in VZnO NFs. Moreover, the hydrogenation of as-synthesized VZnO (H:VZnO) NFs displayed an outstanding increase in response current as compared to pristine structures. The H:VZnO NFs device presents an extraordinary photoelastic behavior with faster photodetection speed in the order of ms under a low UV illumination signal. Excellent responsivity and external quantum efficiency with larger value of specific detectivity of H:VZnO NFs device promises an outstanding sensitivity for UV signal and self-powered high-performance visible-blind photodetector.
引用
收藏
页码：18182 / 18188
页数：7
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