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Title: Triple-Halide Wide-Band Gap Perovskites with Suppressed Phase Segregation for Efficient Tandems

Abstract

Wide-bandgap metal halide perovskites are promising semiconductors to pair with silicon, copper indium gallium diselenide, and low-bandgap perovskites in tandem solar cells to pursue the goal of achieving power-conversion-efficiency (PCE) over 30% at low cost. However, wide-bandgap perovskite solar cells have been fundamentally limited by photoinduced phase-segregation and low open-circuit-voltage. Here, we report efficient 1.67eV wide-bandgap perovskite top cells using triple-halide alloys (Cl, Br, I) to tailor the bandgap and stabilize the semiconductor under illumination. We show a two-fold increase in photocarrier lifetime and charge carrier mobility that results from enhancing the solubility of chlorine by replacing some of the iodine with bromine to shrink the lattice parameter. We observe a suppression of light-induced phase-segregation even at 100-sun illumination intensity and < 4% degradation in semi-transparent top cells after 1000 hours of maximum-power-point operation at 60. By integrating these top cells with Si bottom cells, we achieve a PCE of 27% in 1cm2-area 2-terminal monolithic tandems.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [1];  [1]; ORCiD logo [1];  [2];  [3]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Arizona State University
  3. University of Colorado
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1605080
Report Number(s):
NREL/JA-5900-75003
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Science
Additional Journal Information:
Journal Volume: 367; Journal Issue: 6482
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; halide perovskites; semiconductors; tandem solar cells; power conversion efficiency

Citation Formats

Xu, Jixian, Boyd, Caleb, Yu, Zhengshan J., Palmstrom, Axel, Witter, Daniel, Larson, Bryon W, France, Ryan M, Werner, Jeremie, Harvey, Steven P, Wolf, Eli J, Weigand, William, Van Hest, Marinus F, Berry, Joseph J, Luther, Joseph M, Holman, Zachary C., and McGehee, Michael D. Triple-Halide Wide-Band Gap Perovskites with Suppressed Phase Segregation for Efficient Tandems. United States: N. p., 2020. Web. doi:10.1126/science.aaz5074.
Xu, Jixian, Boyd, Caleb, Yu, Zhengshan J., Palmstrom, Axel, Witter, Daniel, Larson, Bryon W, France, Ryan M, Werner, Jeremie, Harvey, Steven P, Wolf, Eli J, Weigand, William, Van Hest, Marinus F, Berry, Joseph J, Luther, Joseph M, Holman, Zachary C., & McGehee, Michael D. Triple-Halide Wide-Band Gap Perovskites with Suppressed Phase Segregation for Efficient Tandems. United States. doi:10.1126/science.aaz5074.
Xu, Jixian, Boyd, Caleb, Yu, Zhengshan J., Palmstrom, Axel, Witter, Daniel, Larson, Bryon W, France, Ryan M, Werner, Jeremie, Harvey, Steven P, Wolf, Eli J, Weigand, William, Van Hest, Marinus F, Berry, Joseph J, Luther, Joseph M, Holman, Zachary C., and McGehee, Michael D. Fri . "Triple-Halide Wide-Band Gap Perovskites with Suppressed Phase Segregation for Efficient Tandems". United States. doi:10.1126/science.aaz5074.
@article{osti_1605080,
title = {Triple-Halide Wide-Band Gap Perovskites with Suppressed Phase Segregation for Efficient Tandems},
author = {Xu, Jixian and Boyd, Caleb and Yu, Zhengshan J. and Palmstrom, Axel and Witter, Daniel and Larson, Bryon W and France, Ryan M and Werner, Jeremie and Harvey, Steven P and Wolf, Eli J and Weigand, William and Van Hest, Marinus F and Berry, Joseph J and Luther, Joseph M and Holman, Zachary C. and McGehee, Michael D.},
abstractNote = {Wide-bandgap metal halide perovskites are promising semiconductors to pair with silicon, copper indium gallium diselenide, and low-bandgap perovskites in tandem solar cells to pursue the goal of achieving power-conversion-efficiency (PCE) over 30% at low cost. However, wide-bandgap perovskite solar cells have been fundamentally limited by photoinduced phase-segregation and low open-circuit-voltage. Here, we report efficient 1.67eV wide-bandgap perovskite top cells using triple-halide alloys (Cl, Br, I) to tailor the bandgap and stabilize the semiconductor under illumination. We show a two-fold increase in photocarrier lifetime and charge carrier mobility that results from enhancing the solubility of chlorine by replacing some of the iodine with bromine to shrink the lattice parameter. We observe a suppression of light-induced phase-segregation even at 100-sun illumination intensity and < 4% degradation in semi-transparent top cells after 1000 hours of maximum-power-point operation at 60. By integrating these top cells with Si bottom cells, we achieve a PCE of 27% in 1cm2-area 2-terminal monolithic tandems.},
doi = {10.1126/science.aaz5074},
journal = {Science},
number = 6482,
volume = 367,
place = {United States},
year = {2020},
month = {3}
}

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