High-Efficiency Polymer Solar Cells via the Incorporation of an Amino-Functionalized Conjugated Metallopolymer as a Cathode Interlayer
作者:Shengjian Liu、Kai Zhang、Junming Lu、Jie Zhang、Hin-Lap Yip、Fei Huang、Yong Cao
DOI:10.1021/ja408363c
日期:2013.10.16
An amino-functionalized conjugated metallopolymer PFEN-Hg was developed as a cathode interlayer for inverted polymer solar cells. The resulting devices exhibited significantly improved performance with power conversion efficiencies exceeding 9%. Moreover, good device performance was achievable with the PFEN-Hg over a wider range of film thickness, likely due to the Hg-Hg interactions and improved pi-pi stacking.
Water-Soluble Conjugated Polymers for Amplification of One- and Two-photon Properties of Photosensitizers
作者:Fang He、Xinsheng Ren、Xiaoqin Shen、Qing-Hua Xu
DOI:10.1021/ma2008805
日期:2011.7.12
Two new water-soluble polyfluorene-based conjugated polymers have been designed and synthesized to act as two-photon light harvesting complexes to amplify the two-photon property of photosensitizers and organic dyes through fluorescence resonance energy transfer (FRET). The two-photon absorption cross sections of the conjugated polymers at 800 nm have been significantly improved by inserting ethynylene and vinylene groups as the bridges, which extend the conjugation length and electron delocalization. By using these conjugated polymers as two-photon light harvesting complexes, the two-photon excitation emission of the photosensitizer, Rose Bengal, was found to be significantly enhanced (by up to 85 fold) through FRET. These studies are expected to provide insight on designing systems with further improved performance for potential applications in two-photon photodynamic therapy, sensing, and imaging.