期刊
APPLIED PHYSICS LETTERS
卷 104, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4884366
关键词
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资金
- National Natural Science Foundation of China [11135008, 11079004, U1332131, 11175184, U1232132, 11305172]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [11321503]
- National Basic Research Program of China [2012CB825800]
- New Century Excellent Talents in Chinese University
ZnO-based nanogenerators with excellent performance and convenient functionalization are particularly desirable for self-powered technology, which is however difficult to achieve simultaneously in traditional piezoelectric ZnO nanogenerators. Here, we report a design of electrostatic ZnO nanogenerator by virtue of a type-II ZnO/ZnS core/shell nanostructure electrets, which can turn acoustic waves into electric power with an energy conversion efficiency of 2.2%. The ZnO/ZnS core/shell electrets are charged by ultraviolet irradiation with a long-term stability of the electrostatic charges under ambient condition. The electronic and atomic structure evolution in the charged ZnO/ZnS core/shell electrets are also discussed by detailed experimental and theoretical investigations. This design opens up an alternative path for fabricating robust ZnO-based nanogenerator for future nanotechnology application. (C) 2014 AIP Publishing LLC.
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