【摘要】 研究了Au纳米颗粒表面等离激元增强聚噻吩(P3HT)与富勒烯衍生物(PCBM)共混体系聚合物太阳电池的光电转换效率。Au纳米颗粒表面由双十烷基二甲基溴化铵(DDAB)修饰,能够均匀分散在活性层中。研究了Au纳米颗粒的质量分数对电池性能的影响,发现质量分数为1.2%时,电池性能最佳,转换效率高达3.76%,较未掺杂的参比电池相对提高约20%。掺入Au纳米颗粒后P3HT和PCBM共混膜光吸收显著增强,从而使电池外量子效率大大增加。电池效率的提升主要归结于Au纳米颗粒表面等离激元激发所引起的近场增强。更多还原

【Abstract】 The photovoltaic conversion efficiency of the Au nanoparticle surface plasmon enhanced polymer solar cell based on poly(3-hexylthiophene-2,5-diyl)(P3HT) and -phenyl C61 butyric acid methyl ester(PCBM) system was investigated.The Au nanoparticles modified with DDAB could disperse in photoactive layer uniformly.The effect of the weight ratio of Au nano-particles on the performance of solar cells was studied.It is founded that the performance of solar cells is optimum when the weight ratio of Au nanoparticles is 1.2%,the photovoltaic conversion efficiency reaches 3.76% and increases about 20% compared to the undoped solar cell.The light absorption for the blended membrane of P3HT and PCBM is enhanced significantly after mixed with Au nanoparticles,and the external quantum efficiency of device is increased greatly.The improvement of the solar cell efficiency is contributed to the near-field enhancement produced by the excitation of the Au nanoparticle surface plasmon.更多还原