Growth of ZnO nanotube arrays and nanotube based piezoelectric nanogenerators

Yi Xi; Jinhui Song; Sheng Xu; Rusen Yang; Zhiyuan Gao; Chenguo Hu; Zhong Lin Wang

doi:10.1039/B917525C

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Journal of Materials Chemistry

Issue 48, 2009

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Growth of ZnO nanotube arrays and nanotube based piezoelectric nanogenerators

Yi Xi , Jinhui Song , Sheng Xu , Rusen Yang , Zhiyuan Gao , Chenguo Hu and Zhong Lin Wang

J. Mater. Chem., 2009, 19, 9260-9264

DOI: 10.1039/B917525C
Received 25 Aug 2009, Accepted 02 Oct 2009
First published on the web 29 Oct 2009

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We present a systematic study of the growth of hexagonal ZnO nanotube arrays using a solution chemical method by varying the growth temperature (<100 °C), time and solution concentration. A piezoelectric nanogenerator using the as-grown ZnO nanotube arrays has been demonstrated for the first time. The nanogenerator gives an output voltage up to 35 mV. The detailed profile of the observed electric output is understood based on the calculated piezoelectric potential in the nanotube with consideration of the Schottky contact formed between the metal tip and the nanotube; and the mechanism agrees with that proposed for nanowire based nanogenerator. Our study shows that ZnO nanotubes can also be used for harvesting mechanical energy.

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Yi Xi
Jinhui Song
Sheng Xu
Rusen Yang
Zhiyuan Gao
Chenguo Hu
Zhong Lin Wang

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Journal of Materials Chemistry

Growth of ZnO nanotube arrays and nanotube based piezoelectric nanogenerators

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