Choi Jun, Kim Kyungkon, Kim Sung-Jin
Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, South Korea.
Sci Rep. 2021 Jul 5;11(1):13833. doi: 10.1038/s41598-021-93223-7.
A luminescent solar concentrator (LSC) is a solar-light harvesting device that concentrates light on a photovoltaic cell placed at the edge of an LSC panel to convert it into electricity. The nano-sized inorganic-organic cluster complex (dMDAEMA)[ReS(NCS)] (this refers to RMC where dMDAEMA is 2-dimethyl amino ethyl methacrylate) is a promising candidate for LSC luminophores due to its downshifted broad photoluminescence suitable for photovoltaic cells. However, the low quantum yield (QY) of RMC limits the performance. Here, zinc-doped CuGaS/ZnS core/shell quantum dots (ZQD) were used as energy transferring donor with high QY to improve the performance of the LSC. The two metal chalcogenide luminophores, RMC and ZQD, are chemically suitable for dispersion in an amphiphilic polymer matrix, producing a transparent waveguide with suppressed reabsorption and extended harvesting coverage of the solar spectrum. We achieved an η of 3.47% and a PCE of 1.23% while maintaining greater than 80% transparency in the visible range. The high performance of this dual-dye LSC with suppressed reabsorption, and scattering losses is not only due to uniform dispersion of dyes in a polymer matrix, but also energy transfer from ZQD to RMC. This report suggests a new possibility for promising various multi-dye LSCs for use in building-integrated photovoltaic windows.
发光太阳能聚光器（LSC）是一种太阳能收集装置，它将光聚集在放置在LSC面板边缘的光伏电池上，以将其转化为电能。纳米尺寸的无机-有机簇络合物（dMDAEMA）[ReS（NCS）]（这里指的是RMC，其中dMDAEMA是甲基丙烯酸2-二甲基氨基乙酯）由于其适合光伏电池的向下转移的宽光致发光，是LSC发光体的一个有前途的候选者。然而，RMC的低量子产率（QY）限制了其性能。在此，掺锌的CuGaS/ZnS核壳量子点（ZQD）被用作具有高QY的能量转移供体，以提高LSC的性能。两种金属硫族化物发光体RMC和ZQD在化学上适合分散在两亲聚合物基质中，从而产生具有抑制的再吸收和扩展的太阳光谱收集覆盖范围的透明波导。我们实现了3.47%的η和1.23%的光电转换效率（PCE），同时在可见光范围内保持大于80%的透明度。这种具有抑制的再吸收和散射损失的双染料LSC的高性能不仅归因于染料在聚合物基质中的均匀分散，还归因于从ZQD到RMC的能量转移。本报告为开发用于建筑集成光伏窗户的各种多染料LSC提出了一种新的可能性。
