Piezotronic Effect on the Output Voltage of P3HT/ZnO Micro/Nanowire Heterojunction Solar Cells

被引：128

作者：

Yang, Ya ^{[1
]}

Guo, Wenxi ^{[1
]}

Zhang, Yan ^{[1
]}

Ding, Yong ^{[1
]}

Wang, Xue ^{[1
]}

Wang, Zhong Lin ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 11期

关键词：

ZnO micro/nanowires; P3HT; piezopotential; piezotronic effect; FIELD-EFFECT TRANSISTOR; SINGLE ZNO NANOWIRE; PHOTOVOLTAIC DEVICES; NANOBELTS; SWITCHES; ARRAYS; SENSOR; WIRES;

D O I：

10.1021/nl202648p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the first observation of piezotronic effect on the output voltage of a flexible heterojunction solar cell. The solar cell was fabricated by contacting poly(3-hexylthiophene) (P3HT) with one end of a ZnO micro/nanowire to form a p-n heterojunction on a flexible polystyrene (PS) substrate. The open-circuit voltage V-oc of the solar cell was characterized by tuning the strain-induced polarization charges at the interface between ZnO and P3HT. The experimental data were understood based on the modification of the band structure at the p-n junction by the piezopotential, which is referred as a result of the piezotronic effect. This study not only provides an in-depth understanding about the effect but also is useful for maximizing the output of a solar cell using wurtzite structured materials.

引用

页码：4812 / 4817

页数：6

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