发光学报, 2015, 36 (5): 539, 网络出版: 2015-05-20
利用蛾眼结构提高有机太阳能电池光吸收效率的理论研究
Theoretical Study on The Improvement of Light Absorption Efficiency of Organic Solar Cells by Moth Eye Structures
有机太阳能电池 蛾眼结构 表面等离子体 吸收效率 organic solar cells moth-eye structure surface plasmon polariton absorption efficiency
摘要
为提高有机太阳能电池(OSCs)的能量转换效率, 将蛾眼微结构应用于OSCs上。通过理论模拟计算, 得出在有机层厚度一定的情况下, 带有蛾眼微结构的OSCs相比于普通平板结构的OSCs的光吸收效率有较大的提高。通过对微结构形貌、周期和高度的优化, 使蛾眼结构OSCs的光吸收效率比普通平板OSCs提高了11.3%。器件光场分布的模拟计算表明, 光吸收效率的提高是由蛾眼结构减反增透的效果和表面等离子体(SPP)增强吸收共同导致的结果。
Abstract
In order to improve the energy conversion efficiency of organic solar cells (OSCs), the moth-eye structure was applied to OSCs. According to the theoretical simulation, in a certain active layer thickness, the moth-eye OSCs has a large enhancement in light absorption efficiency compared with the planar OSCs. Through the optimization of microstructure morphology, period and height, the moth-eye OSCs has an increase of 11.3% in light absorption efficiency than the planar OSCs. The simulation of the distribution of magnetic field intensity in the moth-eye OSCs indicates that the light absorption enhancement can be attributed to both the anti-reflective effect of moth-eye structures and the enhanced absorption effect of the surface plasmon polariton (SPP).
白昱, 郭晓阳, 刘星元. 利用蛾眼结构提高有机太阳能电池光吸收效率的理论研究[J]. 发光学报, 2015, 36(5): 539. BAI Yu, GUO Xiao-yang, LIU Xing-yuan. Theoretical Study on The Improvement of Light Absorption Efficiency of Organic Solar Cells by Moth Eye Structures[J]. Chinese Journal of Luminescence, 2015, 36(5): 539.
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