Influence of the Electron Acceptor Group on the Backbone of N-(2,6-Diisopropylphenyl)-2,5-di(2-thienyl)pyrrole-Based Polymer

摘要

Development of structurally new polymers for polymer solar cell (PSC) applications is an attractive research area due to their beneficial properties such as clean energy production, low-cost, light-weight, and roll-to-roll processing on flexible substrates. The power conversion efficiency (PCE) of the PSCs was finally improved to 7.0-8.6% by utilizing suitable polymers as electron donor materials, that have the appropriate energy levels with efficient light harvesting ability, and PC71BM as an electron accepting material. In our laboratory, we have been interested in preparing N-(2,6-diisopropylphenyl)-2,5-di(2-thienyl)pyrrole (N-aryl TPT)-based n-conjugated polymers as electron donor materials for PSC applications.