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Harnessing the Synergetic Effects of Ag, Mn Dopants in Eco‐Friendly Ultraviolet Selective Quantum Dots for Luminescent Solar Concentrators
Small Methods ( IF 12.4 ) Pub Date : 2024-03-28 , DOI: 10.1002/smtd.202301695
Lei Jin 1, 2, 3 , Ehsan Hamzehpoor 3 , Gurpreet Singh Selopal 2, 4 , Jiabin Liu 2 , Pawan Kumar 2 , Daniele Benetti 2, 3 , Xin Tong 1 , Dmytro F. Perepichka 3 , Zhiming M. Wang 1, 5 , Federico Rosei 2
Affiliation  

Quantum dots (QDs) are promising building blocks for luminescent solar concentrators (LSCs), yet most QD‐based LSCs suffer from toxic metal composition and color tinting. UV‐selective harvesting QDs can enable visible transparency, but their development is restricted by large reabsorption losses and low photoluminescence quantum yield (PLQY). The developed here Ag, Mn: ZnInS2/ZnS QDs show a high PLQY of 53% due to the passivating effect of ZnS shell. These QDs selectively absorb UV light and emit orange‐red light with a large Stokes shift of 180 nm. A LSC of 5 × 5 × 0.2 cm3, fabricated using a poly(lauryl methacrylate) (PLMA) as a matrix, maintains 87% of integrated PL after 7 h of UV exposure. The QD‐PLMA achieved 90.7% average visible transparency (AVT) and a color rendering index (CRI) of 95.8, which is close to plain PLMA (AVT = 90.8%; CRI = 99.5), yielding excellent visible light transparency. Incorporating Si‐PVs at LSC edges, the Ag, Mn: ZIS/ZnS QD‐LSC achieved an optical efficiency of 1.42%, ranking competitively among high‐performing UV‐harvesting LSCs.

中文翻译:

利用环保型紫外选择性量子点中银、锰掺杂剂的协同效应用于发光太阳能聚光器

量子点 (QD) 是发光太阳能聚光器 (LSC) 的有前途的构建模块,但大多数基于 QD 的 LSC 都存在有毒金属成分和着色问题。紫外选择性收获量子点可以实现可见光透明,但其发展受到大的重吸收损失和低光致发光量子产率(PLQY)的限制。这里开发的Ag、Mn:ZnInS2由于 ZnS 壳的钝化作用,/ZnS QD 显示出 53% 的高 PLQY。这些量子点选择性地吸收紫外光并发射斯托克斯位移达 180 nm 的橙红色光。 5 × 5 × 0.2 厘米的 LSC3使用聚(甲基丙烯酸月桂酯)(PLMA)作为基质制造的,在紫外线照射 7 小时后仍保持 87% 的集成 PL。 QD-PLMA 的平均可见光透明度 (AVT) 达到 90.7%,显色指数 (CRI) 为 95.8,接近普通 PLMA(AVT = 90.8%;CRI = 99.5),具有优异的可见光透明度。在 LSC 边缘结合 Si-PV,Ag, Mn: ZIS/ZnS QD-LSC 的光学效率达到 1.42%,在高性能紫外线捕获 LSC 中具有竞争力。
更新日期:2024-03-28
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