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Open Access Highly Accessed Nano Express

Improved photovoltaic performance of silicon nanowire/organic hybrid solar cells by incorporating silver nanoparticles

Kong Liu1, Shengchun Qu1*, Xinhui Zhang2, Furui Tan1 and Zhanguo Wang1

Author Affiliations

1 Key Laboratory of Semiconductor Materials Science, Institute of Semiconductor, Chinese Academy of Sciences, 100083, Beijing, People's Republic of China

2 State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductor, Chinese Academy of Sciences, 100083, Beijing, People's Republic of China

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Nanoscale Research Letters 2013, 8:88  doi:10.1186/1556-276X-8-88

Published: 18 February 2013

Abstract

Silicon nanowire (SiNW) arrays show an excellent light-trapping characteristic and high mobility for carriers. Surface plasmon resonance of silver nanoparticles (AgNPs) can be used to increase light scattering and absorption in solar cells. We fabricated a new kind of SiNW/organic hybrid solar cell by introducing AgNPs. Reflection spectra confirm the improved light scattering of AgNP-decorated SiNW arrays. A double-junction tandem structure was designed to manufacture our hybrid cells. Both short-circuit current and external quantum efficiency measurements show an enhancement in optical absorption of organic layer, especially at lower wavelengths.

Keywords:
Silicon nanowire; Silver nanoparticle; Surface plasmon resonance; Hybrid solar cell