博士研究員 Daobin Yang 君のπ共役拡張スクアリリウム誘導体を用いた有機薄膜太陽電池に関する論文、「An Effective π-Extended Squaraine for Solution-processed Organic Solar Cell with High Efficiency」が、英国王立化学会 (Royal Society of Chemistry) Journal of Materials Chemistry A (IF: 8.262) にアクセプトされました。Yang 君、おめでとうございます！
An Effective π-Extended Squaraine for Solution-processed Organic Solar Cell with High Efficiency
Abstract: Among the multifarious kinds of small molecular photovoltaic materials, squaraines are quite attractive due to their facile and low-cost synthesis, intense and broad absorption in Vis-NIR spectral regions with very high molar extinction coefficients. Nevertheless, one key factor limiting the performance of squaraines-based organic solar cells (OSCs) is their low fill factor (FF), which is ascribed to the low hole mobility of the active layer. Here, we successfully reported a novel large π-extended bis(squaraines) electron donor, namely D-BDT-SQ, that showed one order of magnitude enhanced hole mobility in the donor-acceptor composite film, up to 10-4 cm2 V-1 s-1. As a result, an impressive power conversion efficiency (PCE) of 7.41% with a high FF of 0.60 was achieved for solution-processed bulk heterojunction OSC when the working temperature of devices was 80 °C, which is, to the best of our knowledge, the record PCE among the squaraines-based single-junction OSCs.
