Enhancing photovoltaic performance of textured silicon solar cells using metallic nanoparticles plasmonic scattering

• Main Authors: Chien-Wu Yeh, 葉建吾
• Other Authors: 何文章
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/78ftza

碩士 === 國立臺北科技大學 === 光電工程系研究所 === 105 === In this study, the photovoltaic performance enhancement of the textured crystalline silicon solar cells with plasmonic metallic nanoparticles is experimental demonstrated. In general, the plasmonic scattering of gold nanoparticles and silver nanoparticles (Ag-NPs) has been widely studied to enhance photovoltaic performance. Indium nanoparticles (In-NPs) and Ag-NPs depositing on textured silicon solar cells are proposed in this study. The contribution of light trapping and scattering of various NPs depended on incident angles is also discussed. The plasmonic scattering of In-NPs and Ag-NPs with various particle sizes on the textured silicon with SiNx anti-reflection coating (ARC) solar cell was characterized. SEM analysis, optical reflectance, external quantum efficiency (EQE), dark current-voltage and photovoltaic current-voltage measurements depending on the incident angle of light illumination are measured and compared. In the case of the incident angle of 0° and 75°, the photovoltaic performance of the cells with In-NPs are: the short circuit current density enhancement (ΔJsc) of 0.42% (from 39.57 mA/cm^2 to 39.74 mA/cm^2) and conversion efficiency enhancement (Δη) of 1.98% (from 16.64% to 16.97%), and the ΔJsc of 24.23% (from 8.79 mA/cm^2 to 10.92 mA/cm^2) and Δη of 33.33% (from 3.1% to 4.1%), respectively. The performance of current density and conversion efficiency of the textured cells with Ag-NPs at the normal incident was not increase. However, at 75°, ΔJsc of 10.11% (from 8.01 mA/cm^2 to 8.82 mA/cm^2) and Δη 17.22% (from 2.67% to 3.13%) were obtained. Besides, the daily output energy enhancement of 8.8% (from 107.7 mWh to 117.18 mWh) for the cells with In-NPs and 0.94% (from 103.41 mWh to 104.39 mWh) for the cells with Ag-NPs are obtained in this work. The experimental results show that the metallic NPs deposited on the textured silicon solar cell demonstrated a good light-trapping capability of variable incident angle. Especially, using In-NPs, the textured silicon solar cell can deliver a higher output electrical power.