Mn-Doped Multiple Quantum Well Perovskites for Efficient Large-Area Luminescent Solar Concentrators

Tong Wei; Kai Lian; Jiaqi Tao; Hu Zhang; Da Xu; Jiachen Han; Chao Fan; Zihui Zhang; Wengang Bi; Chun Sun

doi:10.1021/acsami.2c12834

Mn-Doped Multiple Quantum Well Perovskites for Efficient Large-Area Luminescent Solar Concentrators

ACS Appl Mater Interfaces. 2022 Oct 5;14(39):44572-44580. doi: 10.1021/acsami.2c12834. Epub 2022 Sep 20.

Authors

Tong Wei¹, Kai Lian¹, Jiaqi Tao¹, Hu Zhang¹, Da Xu¹, Jiachen Han¹, Chao Fan¹, Zihui Zhang¹, Wengang Bi¹, Chun Sun¹

Affiliation

¹ State Key Laboratory of Reliability and Intelligence of Electrical Equipment, 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.

PMID: 36125906
DOI: 10.1021/acsami.2c12834

Abstract

Luminescent solar concentrators (LSCs) can be used as large-area sunlight collectors, which show great potential in the application of building-integrated photovoltaic areas. Achieving highly efficient LSCs requires the suppression of reabsorption losses while maintaining a high photoluminescence quantum yield (PLQY) and broad absorption. Perovskites as the superstar fluorophores have recently emerged as candidates for large-area LSCs. However, highly emissive perovskites with a large Stokes shift and broad absorption have not been obtained up to now. Here, we devised a facile synthetic route to obtain Mn-doped multiple quantum well (MQW) Br-based perovskites. The Br-based perovskite host ensures broad absorption. Efficient energy transfer from the exciton to the Mn dopant produces a large Stokes shift and high PLQY simultaneously. By further coating the perovskites with Al₂O₃, the stability and PLQY are greatly elevated. A large area of liquid LSC (40 cm × 40 cm × 0.5 cm) is fabricated, which possesses an internal quantum efficiency (η_int) of 47% and an optical conversion efficiency (η_opt) reaching 11 ± 1%, which shows the highest value for large-area LSCs.

Keywords: Mn-doped multiple quantum well; highest optical conversion efficiency; large-area luminescent solar concentrators; luminescence; near-unity quantum yield.