Perovskite-perovskite tandem photovoltaics with optimized band gaps

被引：1293

作者：

Eperon, Giles E. ^{[1
,2
]}

Leijtens, Tomas ^{[3
]}

Bush, Kevin A. ^{[3
]}

Prasanna, Rohit ^{[3
]}

Green, Thomas ^{[1
]}

Wang, Jacob Tse-Wei ^{[1
]}

McMeekin, David P. ^{[1
]}

Volonakis, George ^{[4
]}

Milot, Rebecca L. ^{[1
]}

May, Richard ^{[2
]}

Palmstrom, Axel ^{[5
]}

Slotcavage, Daniel J. ^{[3
]}

Belisle, Rebecca A. ^{[3
]}

Patel, Jay B. ^{[1
]}

Parrott, Elizabeth S. ^{[1
]}

Sutton, Rebecca J. ^{[1
]}

Ma, Wen ^{[6
]}

Moghadam, Farhad ^{[6
]}

Conings, Bert ^{[1
,7
]}

Babayigit, Aslihan ^{[1
,7
]}

Boyen, Hans-Gerd ^{[7
]}

Bent, Stacey ^{[5
]}

Giustino, Feliciano ^{[4
]}

Herz, Laura M. ^{[1
]}

Johnston, Michael B. ^{[1
]}

McGehee, Michael D. ^{[2
]}

Snaith, Henry J. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

[2] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[3] Stanford Univ, Dept Mat Sci, Stanford, CA 94305 USA

[4] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

[5] Stanford Univ, Dept Chem Engn, Via Ortega, Stanford, CA 94305 USA

[6] SunPreme, Palomar Ave, Sunnyvale, CA USA

[7] Hasselt Univ, Inst Mat Res, Diepenbeek, Belgium

来源：

SCIENCE | 2016年 / 354卷 / 6314期

基金：

英国工程与自然科学研究理事会;

关键词：

CHARGE-CARRIER DYNAMICS; HALIDE PEROVSKITES; SOLAR-CELLS; LEAD; TIN; CRYSTALLIZATION; FORMAMIDINIUM; MOBILITIES; CATIONS; FILMS;

D O I：

10.1126/science.aaf9717

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We demonstrate four-and two-terminal perovskite-perovskite tandem solar cells with ideally matched band gaps. We develop an infrared-absorbing 1.2-electron volt band-gap perovskite, FA(0.75)Cs(0.25)Sn(0.5)Pb(0.5)I(3), that can deliver 14.8% efficiency. By combining this material with a wider-band gap FA(0.83)Cs(0.17)Pb(I0.5Br0.5)(3) material, we achieve monolithic two-terminal tandem efficiencies of 17.0% with > 1.65-volt open-circuit voltage. We also make mechanically stacked four-terminal tandem cells and obtain 20.3% efficiency. Notably, we find that our infrared-absorbing perovskite cells exhibit excellent thermal and atmospheric stability, not previously achieved for Sn-based perovskites. This device architecture and materials set will enable "all-perovskite" thin-film solar cells to reach the highest efficiencies in the long term at the lowest costs.

引用

页码：861 / 865

页数：5

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