Single-Layered Luminescent Solar Concentrators via Configurational Design Based on Perylene Diimide Derivatives

作者：Sha Li, Suiying Ye, Shih‐Chun Lo, Paul Balansard, Matthieu Jonin, Yinyin Bao, Sophia Haussener · 发表于：ACS Applied Optical Materials · 年份：2025 · DOI：10.1021/acsaom.5c00190 · 被引用次数：3 · 研究领域：Photochemistry and Electron Transfer Studies、Organic Electronics and Photovoltaics、Photoreceptor and optogenetics research

A luminescent solar concentrator (LSC) is a promising photonic device for sunlight harvesting, but its potential for commercialization is limited by η ext, requiring design innovation in material and configuration. While most research has been focused on developing luminophores, very limited efforts are made to compare the performance of different LSC configurations. Herein, the performance of two LSC configurations─thin-film coated and bulk doped─is investigated in order to demonstrate efficient single-layered LSCs. The luminophores of interest are two perylene diimide (PDI) derivatives, given their distinct effective photoluminescence quantum yield (PLQY eff ) and Stokes shifts: the commercial Lumogen F Red 305 (LFR305) and our four-arm PDI-based styrenic polymer (PDI-tetraPS). Overall, doped LSCs are more efficient than coated configurations, thanks to the high PLQY eff and strong absorbance achieved simultaneously that significantly reduce the transmission and QY losses, leading to an external photon efficiency of 8.1% and power conversion efficiency of 2.1% (for the LFR305 doped case). For the coated LSCs, a thicker lightguide leads to a higher η ext by mitigating the reabsorption loss, yielding an external photon efficiency of 2.1% (for the PDI-tetraPS coated case). The choice of the optimal luminophore strongly depends on the LSC configuration, and its concentration proves to be a critical optimization factor, revealing an inevitable trade-off between transmission and ...