Improved photovoltaic performance of silicon nanowire/organic hybrid solar cells by incorporating silver nanoparticles
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
Nanoscale Research Letters 2013, 8:88 doi:10.1186/1556-276X-8-88Published: 18 February 2013
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.