Wei Tong, Wang Le, Sun Chun, Xu Da, Tao Jiaqi, Zhang Hu, Han Jiachen, Fan Chao, Zhang Zihui, Bi Wengang
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P. R. China.
Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P. R. China.
ACS Appl Mater Interfaces. 2021 Dec 1;13(47):56348-56357. doi: 10.1021/acsami.1c18361. Epub 2021 Nov 16.
Luminescent solar concentrators (LSCs) show great promise in reducing the cost of silicon solar cells due to their potential use for high-efficiency energy harvesting. Compared to narrow absorption organic dyes, quantum dots (QDs) are a favorable approach to acquire stable LSCs. However, the use of toxic heavy metals in QDs and the small Stokes shift largely restrict their development. Here, a toxic metal-free, highly luminescent ink based on a copper(I)-halide hybrid cluster is reported, whose quantum yield (QY) exceeds 68%. Under the interaction with halohydrocarbon, CuI and phenethylamine (PEA) can be easily dissolved and the ink can be facilely acquired. The obtained film exhibits strong orange light emission with a large Stokes shift. As a proof-of-concept experiment, (PEA)CuI has been used to fabricate LSCs. The as-prepared LSC (4 cm × 4 cm × 0.3 cm) exhibits an internal quantum efficiency () as high as 44.1%. After coupling to a solar cell, an optical conversion efficiency () of 6.85% is acquired from this LSC. In addition, the LSC possesses high stability such as air stability, water stability, and photostability. These results demonstrate that the (PEA)CuI film can be employed as a promising candidate for large-area and high-efficiency LSCs.
发光太阳能聚光器（LSCs）因其在高效能量收集方面的潜在用途，在降低硅太阳能电池成本方面显示出巨大潜力。与窄吸收有机染料相比，量子点（QDs）是获得稳定LSCs的一种有利方法。然而，量子点中使用有毒重金属以及斯托克斯位移小在很大程度上限制了它们的发展。在此，报道了一种基于卤化亚铜（I）混合簇的无毒、高发光油墨，其量子产率（QY）超过68%。在与卤代烃相互作用下，碘化亚铜（CuI）和苯乙胺（PEA）可轻易溶解，从而可轻松获得该油墨。所得薄膜呈现出具有大斯托克斯位移的强烈橙色发光。作为概念验证实验，（PEA）CuI已被用于制造LSCs。所制备的LSC（4 cm×4 cm×0.3 cm）表现出高达44.1%的内量子效率（）。与太阳能电池耦合后，该LSC的光学转换效率（）达到6.85%。此外，该LSC具有高稳定性，如空气稳定性、水稳定性和光稳定性。这些结果表明，（PEA）CuI薄膜可作为大面积、高效率LSCs的有前途的候选材料。
