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

被引：163

作者：

Wei, Mingyang ^{[1
]}

de Arguer, F. Pelayo Garcia ^{[1
]}

Walters, Grant ^{[1
]}

Yang, Zhenyu ^{[1
]}

Quan, Li Na ^{[1
]}

Kim, Younghoon ^{[1
,2
]}

Sabatini, Randy ^{[1
]}

Quintero-Bermudez, Rafael ^{[1
]}

Gao, Liang ^{[1
]}

Fan, James Z. ^{[1
]}

Fan, Fengjia ^{[1
]}

Gold-Parker, Aryeh ^{[3
,4
]}

Toney, Michael F. ^{[3
]}

Sargent, Edward H. ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON, Canada

[2] Daegu Gyeongbuk Inst Sci & Technol, Convergence Res Ctr Solar Energy, Daegu, South Korea

[3] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA USA

[4] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

来源：

NATURE ENERGY | 2019年 / 4卷 / 03期

基金：

加拿大自然科学与工程研究理事会; 新加坡国家研究基金会;

关键词：

ENERGY-TRANSFER; QUANTUM DOTS; NANOCRYSTALS; METAL;

D O I：

10.1038/s41560-018-0313-y

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

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 x 10 cm(2), which represents a fourfold enhancement over the best previously reported perovskite LSCs.

引用

页码：197 / 205

页数：9

共 32 条

[31]

Yuan MJ, 2016, NAT NANOTECHNOL, V11, P872, DOI [10.1038/NNANO.2016.110, 10.1038/nnano.2016.110]

[32] Perovskite quantum dots integrated in large-area luminescent solar concentrators [J].

Zhao, Haiguang ;

Zhou, Yufeng ;

Benetti, Daniele ;

Ma, Dongling ;

Rosei, Federico .

NANO ENERGY, 2017, 37 :214-223

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