博士研究員 Daobin Yang 博士と四川大学の Huang 教授のスクアリリウム誘導体を用いたカラフル半透明有機薄膜太陽電池に関する共同研究論文「Colorful Squaraines Dyes for Efficient Solution-Processed All Small Molecules Semitransparent Organic Solar Cells」と題する論文がアメリカ化学会（American Chemical Society）の ACS Applied Materials & Interfaces (IF: 8.097) に受理されました。
Title: Colorful Squaraines Dyes for Efficient Solution-Processed All Small Molecules Semitransparent Organic Solar Cells
By D, Yang, T. Sano, H. Sasabe, L. Yang, S. Ohisa, Y. Chen, Y. Huang, J. Kido, ACS Appl. Mater. Interf. accepted.
Abstract: Semitransparent organic solar cells (ST-OSCs) exhibit highly promising applications to develop integrated photovoltaics and power-generating windows. However, the development of ST-OSCs is significantly lagging behind opaque OSCs, especially for all small molecules ST-OSCs. Here, four unique squaraines dyes (IDPSQ, SQ-BP, D-BDT-SQ, and AzUSQ) were successfully used as donors in ST-OSCs, whose colors can be tuned from purple to blue, green, and dark green, respectively. While using ultrathin Ag as a transparent electrode, the ST-OSCs fabricated using IDPSQ:PC71BM, SQ-BP:PC71BM, D-BDT-SQ:PC71BM, and AzUSQ:PC71BM yield power conversion efficiencies (PCEs) of 2.96%, 4.36%, 4.91%, and 1.71%, respectively, and their colors are purple, cyan, brown, and light brown, respectively. Compared with their opaque OSCs (PCEs of 3.95%, 5.45%, 5.84%, and 1.91%, respectively), the reduction in the PCEs are as low as 25%, 20%, 16%, and 10%, respectively. Furthermore, each of these ST-OSCs exhibit good average visible transmittance (AVT) of 25%–30%, favorable CIE color coordinates, and a color rendering index (CRI) of 71%–97%. Finally, by changing the thickness of the Ag electrode, an impressive PCE of 4.9% along with an AVT of 25% and a CRI of 97% can be obtained in D-BDT-SQ:PC71BM-based ST-OSCs, which is the highest PCE among all small molecules ST-OSCs.