Kim Richard S, Zhu Jinfeng, Park Jeung Hun, Li Lu, Yu Zhibin, Shen Huajun, Xue Mei, Wang Kang L, Park Gyechoon, Anderson Timothy J, Pei Qibing
AFRL/RYDP and NRC, WPAFB, 2241 Avionics circle, Bldg.600, WPAFB, Ohio 45433, USA.
Opt Express. 2012 Jun 4;20(12):12649-57. doi: 10.1364/OE.20.012649.
We report the plasmon-assisted photocurrent enhancement in Ag-nanoparticles (Ag-NPs) embedded PEDOT:PSS/P3HT:PCBM organic solar cells, and systematically investigate the causes of the improved optical absorption based on a cylindrical Ag-NPs optical model which is simulated with a 3-Dimensional finite difference time domain (FDTD) method. The proposed cylindrical Ag-NPs optical model is able to explain the optical absorption enhancement by the localized surface plasmon resonance (LSPR) modes, and to provide a further understanding of Ag-NPs shape parameters which play an important role to determine the broadband absorption phenomena in plasmonic organic solar cells. A significant increase in the power conversion efficiency (PCE) of the plasmonic solar cell was experimentally observed and compared with that of the solar cells without Ag-NPs. Finally, our conclusion was made after briefly discussing the electrical effects of the fabricated plasmonic organic solar cells.
我们报道了嵌入银纳米颗粒（Ag-NPs）的聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐/聚（3-己基噻吩）：[6,6]-苯基-C61-丁酸甲酯有机太阳能电池中的等离子体辅助光电流增强，并基于用三维有限差分时域（FDTD）方法模拟的圆柱形Ag-NPs光学模型，系统地研究了光吸收改善的原因。所提出的圆柱形Ag-NPs光学模型能够解释由局域表面等离子体共振（LSPR）模式引起的光吸收增强，并进一步理解Ag-NPs形状参数，这些参数在确定等离子体有机太阳能电池中的宽带吸收现象方面起着重要作用。通过实验观察到等离子体太阳能电池的功率转换效率（PCE）显著提高，并与不含Ag-NPs的太阳能电池进行了比较。最后，在简要讨论所制备的等离子体有机太阳能电池的电学效应后得出了我们的结论。
