Luminescent solar concentrators (LSCs) play a major role as light suppliers at the boundaries between indoor and outdoor spaces in buildings. The performances of solar panels coupled with LSCs are directly influenced by the photoluminescence (PL) characteristics of fluorophores, among which inorganic perovskite nanocrystals (PeNCs) have shown great potential. A large Stokes shift in these NCs spanning the ultraviolet (UV), visible, and near-infrared regions can be achieved through metal doping, leading to significant improvements in the PL quantum yields and reduced PL reabsorption. However, practical approaches for coupling perovskite LSCs (PeLSCs) with perovskite solar cells (PSCs) are lacking. The design of all-perovskite LSC/photovoltaic (PV) windows is essential to prepare perovskite-based building-integrated PV systems. Thus, Mn-doped CsPbCl₃ NCs were employed as PL-reabsorption-free fluorophores for LSCs. Their significant Stokes shift allowed for efficient PL propagation to the LSC edges. The Mn:CsPbCl₃/polystyrene composite films used in the LSCs demonstrated excellent optical transparencies and low haze values. When coupled with 16 series-connected high-efficiency PSCs, the PeLSC/PV windows exhibited impressive optical (5.38%) and power conversion (0.43%) efficiencies at a large geometric factor of 25 under 1 sun illumination. Using PeLSC/PV windows as self-powered UV light detectors, an excellent responsivity, specific detectivity, and noise equivalent power were obtained due to strong PL emission from the LSCs, even under weak UV light. An excellent power conversion efficiency was retained (86.3%) after 1000 h of operation due to protection of the solar absorbers from UV light by the long-wavelength PL emission of the LSCs.

中文翻译：

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高透明全钙钛矿发光太阳能聚光器/光伏窗口


发光太阳能聚光器 （LSC） 在建筑物的室内和室外空间边界上发挥着重要的照明供应作用。太阳能电池板与 LSC 耦合的性能直接受到荧光团光致发光 （PL） 特性的影响，其中无机钙钛矿纳米晶体 （PeNCs） 显示出巨大的潜力。这些 NC 中跨越紫外 （UV）、可见光和近红外区域的大斯托克斯位移可以通过金属掺杂实现，从而显著提高 PL 量子产率并减少 PL 重吸收。然而，缺乏将钙钛矿 LSC （PeLSC） 与钙钛矿太阳能电池 （PSC） 耦合的实用方法。全钙钛矿 LSC/光伏 （PV） 窗口的设计对于准备基于钙钛矿的建筑集成光伏系统至关重要。因此，Mn 掺杂的 CsPbCl₃ NC 被用作 LSC 的 PL 无重吸收荧光团。它们显著的斯托克斯位移允许 PL 有效地传播到 LSC 边缘。LSC 中使用的 Mn：CsPbCl₃/聚苯乙烯复合薄膜表现出优异的光学透明度和低雾度值。当与 16 个串联的高效 PSC 耦合时，PeLSC/PV 窗口在 1 个阳光照射下在 25 的大几何因子下表现出令人印象深刻的光学 （5.38%） 和功率转换 （0.43%） 效率。使用 PeLSC/PV 窗口作为自供电紫外光检测器，即使在微弱的紫外光下，由于 LSC 的强 PL 发射也获得了出色的响应性、特异性检测和噪声等效功率。保留了出色的功率转换效率 （86.3%），由于 LSC 的长波长 PL 发射保护太阳能吸收器免受紫外线的影响。