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摘要
Purpose - The purpose of this paper is to investigate a light-trapping structure based on Ag nanograting for amorphous silicon (a-Si) thin-film solar cell. Silver nanopillar arrays on indium tin oxide layer of the a-Si thin-film solar cells were designed. @@@ Design/methodology/approach - The effects of the geometrical parameters such as nanopillar radius (R) and array period (P) were investigated by using the finite element simulation. @@@ Findings - The optimization results show that the absorption of the solar cell with Ag nanopillar structure and anti-reflection film is enhanced up to 29.5 per cent under AM1.5 illumination in the 300- to 800-nm wavelength range compared with the reference cell. Furthermore, physical mechanisms of absorption enhancement at different wavelength range are discussed according to the electrical field amplitude distributions in the solar cells. @@@ Research limitations/implications - The research is still in progress. Further studies mainly focus on the performance of solar cells with different nanograting materials. Practical implications - This study provides a feasible method for light-trapping structure based on Ag nanograting for a-Si thin-film solar cell. @@@ Originality/value - This study is promising for the design of a-Si thin-film solar cells with enhanced performance.
- 出版日期2018
- 单位中原工学院
