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Start Over Author "Niu, Simiao" Journal nano letters
12 results on '"Niu, Simiao"'

12. Enhanced Cu2S/CdS Coaxial Nanowire SolarCells by Piezo-Phototronic Effect.

Author

Pan, Caofeng, Niu, Simiao, Ding, Yong, Dong, Lin, Yu, Ruomeng, Liu, Ying, Zhu, Guang, and Wang, Zhong Lin

Subjects
*COPPER sulfide, *CADMIUM sulfide, *NANOWIRES, *SOLAR cells, *PIEZOELECTRIC semiconductors, *CRYSTAL growth, *MICROFABRICATION
Abstract

Nanowire solar cells are promising candidates for poweringnanosystemsand flexible electronics. The strain in the nanowires, introducedduring growth, device fabrication and/or application, is an importantissue for piezoelectric semiconductor (like CdS, ZnO, and CdTe) basedphotovoltaic. In this work, we demonstrate the first largely enhancedperformance of n-CdS/p-Cu2S coaxial nanowire photovoltaic(PV) devices using the piezo-phototronics effect when the PV deviceis subjected to an external strain. Piezo-phototronics effect couldcontrol the electron–hole pair generation, transport, separation,and/or recombination, thus enhanced the performance of the PV devicesby as high as 70%. This effect offers a new concept for improvingsolar energy conversation efficiency by designing the orientationof the nanowires and the strain to be purposely introduced in thepackaging of the solar cells. This study shed light on the enhancedflexible solar cells for applications in self-powered technology,environmental monitoring, and even defensive technology. [ABSTRACT FROM AUTHOR]

Published
2012
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