Cited 3 time in webofscience Cited 5 time in scopus

Ultrafast narrowband exciton routing within layered perovskite nanoplatelets enables low-loss luminescent solar concentrators

Title
Ultrafast narrowband exciton routing within layered perovskite nanoplatelets enables low-loss luminescent solar concentrators
Authors
Wei, Mingyangde Arguer, F. Pelayo GarciaWalters, GrantYang, ZhenyuQuan, Li NaKim, YounghoonSabatini, RandyQuintero-Bermudez, RafaelGao, LiangFan, James Z.Fan, FengjiaGold-Parker, AryehToney, Michael F.Sargent, Edward H.
DGIST Authors
Kim, Younghoon
Issue Date
2019-03
Citation
Nature Energy, 4(3), 197-205
Type
Article
Article Type
Article
Keyword
Excitons; Flowcharting; Luminescence; Metal halides; Perovskite; Photoelectrochemical cells; Photovoltaic cells; Solar concentrators; Solar energy; Solar power generation; Absorbing medium; Concentrated lights; Concentration factors; Halide perovskites; Layered perovskite; Luminescent solar concentrators; Number of layers; Photoluminescence quantum yields; Quantum efficiency
ISSN
2058-7546
Abstract
In luminescent solar concentrator (LSC) systems, broadband solar energy is absorbed, down-converted and waveguided to the panel edges where peripheral photovoltaic cells convert the concentrated light to electricity. Achieving a low-loss LSC requires reducing the reabsorption of emitted light within the absorbing medium while maintaining high photoluminescence quantum yield (PLQY). Here we employ layered hybrid metal halide perovskites—ensembles of two-dimensional perovskite domains—to fabricate low-loss large-area LSCs that fulfil this requirement. We devised a facile synthetic route to obtain layered perovskite nanoplatelets (PNPLs) that possess a tunable number of layers within each platelet. Efficient ultrafast non-radiative exciton routing within each PNPL (0.1 ps−1) produces a large Stokes shift and a high PLQY simultaneously. Using this approach, we achieve an optical quantum efficiency of 26% and an internal concentration factor of 3.3 for LSCs with an area of 10 × 10 cm2, which represents a fourfold enhancement over the best previously reported perovskite LSCs. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
URI
http://hdl.handle.net/20.500.11750/9679
DOI
10.1038/s41560-018-0313-y
Publisher
Nature Publishing Group
Related Researcher
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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