Effect of LiF/metal electrodes on the performance of plastic solar cells

作者：Christoph J. Brabec, Sean E. Shaheen, Christoph Winder, Niyazi Serdar Sariçiftçi, Patrick Denk · 发表于：Applied Physics Letters · 年份：2002 · DOI：10.1063/1.1446988 · 被引用次数：940 · 研究领域：Organic Electronics and Photovoltaics、Organic Light-Emitting Diodes Research、Conducting polymers and applications

The insertion of thin interlayers of LiF under the negative metal electrode (Al and Au) of bulk heterojunction solar cells significantly enhances the fill factor and stabilizes high open circuit voltages. Compared to devices without the LiF interfacial layer, the white light efficiencies increase by over 20% up to ηeff∼3.3%. Substitution of the LiF by another insulating interlayer SiOx results in lower overall efficiencies. In the case of a LiF/Au electrode, substantial efficiency enhancement is observed compared to a pristine Au electrode and white light efficiencies up to ηeff∼2.3% are reported.