Department of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians University (LMU) Munich, Munich, Germany.
Nanotechnology. 2012 Sep 28;23(38):385202. doi: 10.1088/0957-4484/23/38/385202. Epub 2012 Sep 4.
Imprinted silver nanovoid arrays are investigated via angle-resolved reflectometry to demonstrate their suitability for plasmonic light trapping. Both wavelength- and subwavelength-scale nanovoids are imprinted into standard solar cell architectures to achieve nanostructured metallic electrodes which provide enhanced absorption for improving solar cell performance. The technique is versatile, low-cost and scalable and can be applied to a wide range of organic semiconductors. Absorption features which are independent of incident polarization and weakly dependent on incident angle reveal localized plasmonic modes at the structured interface. Metallic nanostructure-PCPDTBT:PCBM samples demonstrate absorption enhancements of up to 40%. The structured interface provides light trapping, which boosts absorption at wavelengths where the semiconductors absorb poorly.
通过角度分辨反射计研究了压印银纳米空穴阵列，以证明其适用于等离子体光捕获。将波长和亚波长尺度的纳米空穴压印到标准太阳能电池结构中，以实现提供增强吸收以提高太阳能电池性能的纳米结构金属电极。该技术具有多功能性、低成本和可扩展性，可应用于广泛的有机半导体。与入射偏振无关且对入射角弱依赖的吸收特征揭示了结构界面处的局域等离子体模式。金属纳米结构-PCPDTBT：PCBM 样品的吸收增强高达 40%。结构化界面提供光捕获，可在半导体吸收较差的波长处提高吸收。
