Kim Kiwon, Nam Seong Kyung, Cho Jinhan, Moon Jun Hyuk
Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea.
Department of Chemical and Biomolecular Engineering, Korea University, Republic of Korea.
Nanoscale. 2020 Jun 18;12(23):12426-12431. doi: 10.1039/d0nr02106g.
A luminescent solar concentrator-based photovoltaic system (LSC-PVs) is highly transparent because it harvests solar light via the LSC, a transparent panel containing only fluorophores, and is, therefore, promising as a PV window. However, for the practical use of LSC-PV, achieving high efficiency remains a challenge. Here, we demonstrate an LSC-PV, which is based on the combination of an upconversion (UC)-assisted dual band harvesting LSC and perovskite solar cells (PSCs). We prepare a dual LSC panel consisting of a downshift (DS) LSC that absorbs violet light and an LSC that upconverts the red light. We apply a highly efficient mixed halide PSC with an efficiency of 17.22%. We control the thickness of the LSC panel as well as the dye concentration to maximize the emission from dual LSCs. The dual LSCs coupled with a PSC exhibit a high average-visible-transmittance of 82% and achieve a maximum efficiency of 7.53% at 1 sun (AM 1.5G) illumination. The dual LSC-PSC exhibits a constant efficiency even under oblique solar light illumination and a stable operation with an efficiency retention of 80%.
基于发光太阳能聚光器的光伏系统（LSC-PV）具有高度透明性，因为它通过LSC收集太阳光，LSC是一种仅包含荧光团的透明面板，因此有望用作光伏窗户。然而，对于LSC-PV的实际应用，实现高效率仍然是一个挑战。在此，我们展示了一种LSC-PV，它基于上转换（UC）辅助的双波段收集LSC与钙钛矿太阳能电池（PSC）的组合。我们制备了一种双LSC面板，由吸收紫光的降频转换（DS）LSC和将红光上转换的LSC组成。我们应用了效率为17.22%的高效混合卤化物PSC。我们控制LSC面板的厚度以及染料浓度，以最大化双LSC的发射。与PSC耦合的双LSC在1个太阳（AM 1.5G）光照下表现出82%的高平均可见光透过率，并实现了7.53%的最大效率。即使在斜向太阳光照射下，双LSC-PSC也表现出恒定的效率，并且在效率保持率为80%的情况下稳定运行。
