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Title: Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [2];  [3]
  1. Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588 USA
  2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 China
  3. Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588 USA, Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill NC 27599 USA
Publication Date:
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1401789
Grant/Contract Number:
EE0006709
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 29; Journal Issue: 26; Related Information: CHORUS Timestamp: 2017-10-20 17:38:03; Journal ID: ISSN 0935-9648
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Lin, Yuze, Chen, Bo, Zhao, Fuwen, Zheng, Xiaopeng, Deng, Yehao, Shao, Yuchuan, Fang, Yanjun, Bai, Yang, Wang, Chunru, and Huang, Jinsong. Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells. Germany: N. p., 2017. Web. doi:10.1002/adma.201700607.
Lin, Yuze, Chen, Bo, Zhao, Fuwen, Zheng, Xiaopeng, Deng, Yehao, Shao, Yuchuan, Fang, Yanjun, Bai, Yang, Wang, Chunru, & Huang, Jinsong. Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells. Germany. doi:10.1002/adma.201700607.
Lin, Yuze, Chen, Bo, Zhao, Fuwen, Zheng, Xiaopeng, Deng, Yehao, Shao, Yuchuan, Fang, Yanjun, Bai, Yang, Wang, Chunru, and Huang, Jinsong. Wed . "Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells". Germany. doi:10.1002/adma.201700607.
@article{osti_1401789,
title = {Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells},
author = {Lin, Yuze and Chen, Bo and Zhao, Fuwen and Zheng, Xiaopeng and Deng, Yehao and Shao, Yuchuan and Fang, Yanjun and Bai, Yang and Wang, Chunru and Huang, Jinsong},
abstractNote = {},
doi = {10.1002/adma.201700607},
journal = {Advanced Materials},
number = 26,
volume = 29,
place = {Germany},
year = {Wed May 03 00:00:00 EDT 2017},
month = {Wed May 03 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1002/adma.201700607

Citation Metrics:
Cited by: 7works
Citation information provided by
Web of Science

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  • A mixed halide perovskite solar cell with a 1.72 eV bandgap is developed by incorporating Br into perovskite through a low-temperature solution process. A high efficiency of 13.1% is achieved by carefully tuning the thickness, morphology, and surface passivation of the perovskite layers. Furthermore, the fabrication techniques and conditions are compatible with future perovskite/Si tandem cell studies.
  • Wide bandgap MAPb(I 1-yBr y) 3 perovskites show promising potential for application in tandem solar cells. However, unstable photovoltaic performance caused by phase segregation has been observed under illumination when y is above 0.2. Herein, we successfully demonstrate stabilization of the I/Br phase by partially replacing Pb 2+ with Sn 2+ and verify this stabilization with X-ray diffractometry and transient absorption spectroscopy. The resulting MAPb 0.75Sn 0.25(I 1-yBr y) 3 perovskite solar cells show stable photovoltaic performance under continuous illumination. Among these cells, the one based on MAPb 0.75Sn 0.25(I 0.4Br 0.6) 3 perovskite shows the highest efficiency of 12.59%more » with a bandgap of 1.73 eV, which make it a promising wide bandgap candidate for application in tandem solar cells. The engineering of internal bonding environment by partial Sn substitution is believed to be the main reason for making MAPb 0.75Sn 0.25(I 1-yBr y) 3 perovskite less vulnerable to phase segregation during the photostriction under illumination. Furthermore, this study establishes composition engineering of the metal site as a promising strategy to impart phase stability in hybrid perovskites under illumination.« less
  • A high-efficiency wide-bandgap (WBG) perovskite solar cell is critical for developing perovskite-related (e.g., all-perovskite, perovskite/Si, or perovskite/Cu(In,Ga)Se2) tandem devices. Here, we demonstrate the use of non-stoichiometric precursor chemistry with excess methylammonium halides (MAX; X = I, Br, or Cl) for preparing high-quality ~1.75-eV FA0.83Cs0.17Pb(I0.6Br0.4)3 perovskite solar cells. Among various methylammonium halides, using excess MABr in the non-stoichiometric precursor exhibits the strongest effect on improving perovskite crystallographic properties and device characteristics without affecting the perovskite composition. In contrast, using excess MAI significantly reduces the bandgap of perovskite due to the replacement of Br with I. Using 40% excess MABr, we demonstratemore » a single-junction WBG perovskite solar cell with stabilized efficiency of 16.4%. We further demonstrate a 20.3%-efficient 4-terminal tandem device by using a 14.7%-efficient semi-transparent WBG perovskite top cell and an 18.6%-efficient unfiltered (5.6%-efficient filtered) Si bottom cell.« less
  • Here, we show that the cooperation of lead thiocyanate additive and a solvent annealing process can effectively increase the grain size of mixed-cation lead mixed-halide perovskite thin films while avoiding excess lead iodide formation. As a result, the average grain size of the wide-bandgap mixed-cation lead perovskite thin films increases from 66 ± 24 to 1036 ± 111 nm, and the mean carrier lifetime shows a more than 3-fold increase, from 330 ns to over 1000 ns. Consequently, the average open-circuit voltage of wide-bandgap perovskite solar cells increases by 80 (70) mV, and the average power conversion efficiency (PCE) increasesmore » from 13.44 ± 0.48 (11.75 ± 0.34) to 17.68 ± 0.36 (15.58 ± 0.55)% when measured under reverse (forward) voltage scans. The best-performing wide-bandgap perovskite solar cell, with a bandgap of 1.75 eV, achieves a stabilized PCE of 17.18%.« less