【摘要】 为提高薄膜太阳能电池的性能,运用时域有限差分和粒子群优化算法,对薄膜太阳能电池金属纳米栅格的结构参数进行了优化设计。优化后,金属纳米栅格薄膜太阳能电池的短路电流与无金属纳米栅格太阳能电池相比提高了39%。对不同极化情况下电池光的吸收和量子效率的提高进行了分析,分析结果表明,经金属纳米栅格耦合进入吸收层的导波模、金属纳米栅格表面等离激元以及吸收层中的法布里-珀罗共振导致了薄膜太阳能电池性能的提高。更多还原

【Abstract】 To improve the performances of thin-film solar cells,particles swarm optimization and the finite-difference time domain algorithm are combined to optimize the structural parameters of the metal nanogratings on the surface of solar cells.A test for the short circuit current over the solar spectrum shows an enhancement up to 39% when comparing with bare thin film cell.Absorption improvement and quantum efficiency enhacement in different polarization mode are analysed.Analytical results show that,the guided-wave modes coupled in the absorbing layer by metal nanogratings,surface plasmon polaritons supported by metal nanogratings and Fabri Pérot resonance in the absorbing layer lead to the performance improvement in thin-film solar cells.更多还原