Piperazine Suppresses Self-Doping in CsSnI3 Perovskite Solar Cells
Abstract
Tin-based halide perovskite materials are promising candidates for lead-free halide perovskite solar cells. However, they suffer from poor device reproducibility and limited overall power conversion efficiencies due to their tendency to become semimetallic from p-type defect states. Herein, we demonstrate an effective approach to address this issue via the addition of piperazine to the precursor solution of tin-based halide perovskite films, to suppress the undesirable p-doping of CsSnI3 films. Piperazine is found to significantly reduce the conductivity of CsSnI3 films, improve the film coverage, and at the same time suppress the crystallization of excess SnI2. Consequently, short-circuit behaviors are eliminated, with significantly improved CsSnI3 solar-cell performance. Finally, the effects of incorporating SnCl2 and SnF2 into the CsSnI3 devices were investigated in conjunction with addition of piperazine to achieve CsSnI3 devices with a maximum power conversion efficiency of 3.83%.
- Authors:
-
- Northwestern Univ., Evanston, IL (United States)
- Northwestern Univ., Evanston, IL (United States); Mitsubishi Chemical Group Science & Technology Research Center, Inc., Yokohama (Japan)
- Mitsubishi Chemical Group Science & Technology Research Center, Inc., Yokohama (Japan)
- Publication Date:
- Research Org.:
- Energy Frontier Research Center (EFRC), Washington, DC (United States). Argonne-Northwestern Solar Energy Research (ANSER) Center; Northwestern Univ., Evanston, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1567229
- Grant/Contract Number:
- SC0001059
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Applied Energy Materials
- Additional Journal Information:
- Journal Volume: 1; Journal Issue: 8; Journal ID: ISSN 2574-0962
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; perovskite; lead-free; solar cells; piperazine; diamine
Citation Formats
Song, Tze-Bin, Yokoyama, Takamichi, Logsdon, Jenna, Wasielewski, Michael R., Aramaki, Shinji, and Kanatzidis, Mercouri G. Piperazine Suppresses Self-Doping in CsSnI3 Perovskite Solar Cells. United States: N. p., 2018.
Web. doi:10.1021/acsaem.8b00866.
Song, Tze-Bin, Yokoyama, Takamichi, Logsdon, Jenna, Wasielewski, Michael R., Aramaki, Shinji, & Kanatzidis, Mercouri G. Piperazine Suppresses Self-Doping in CsSnI3 Perovskite Solar Cells. United States. https://doi.org/10.1021/acsaem.8b00866
Song, Tze-Bin, Yokoyama, Takamichi, Logsdon, Jenna, Wasielewski, Michael R., Aramaki, Shinji, and Kanatzidis, Mercouri G. Sun .
"Piperazine Suppresses Self-Doping in CsSnI3 Perovskite Solar Cells". United States. https://doi.org/10.1021/acsaem.8b00866. https://www.osti.gov/servlets/purl/1567229.
@article{osti_1567229,
title = {Piperazine Suppresses Self-Doping in CsSnI3 Perovskite Solar Cells},
author = {Song, Tze-Bin and Yokoyama, Takamichi and Logsdon, Jenna and Wasielewski, Michael R. and Aramaki, Shinji and Kanatzidis, Mercouri G.},
abstractNote = {Tin-based halide perovskite materials are promising candidates for lead-free halide perovskite solar cells. However, they suffer from poor device reproducibility and limited overall power conversion efficiencies due to their tendency to become semimetallic from p-type defect states. Herein, we demonstrate an effective approach to address this issue via the addition of piperazine to the precursor solution of tin-based halide perovskite films, to suppress the undesirable p-doping of CsSnI3 films. Piperazine is found to significantly reduce the conductivity of CsSnI3 films, improve the film coverage, and at the same time suppress the crystallization of excess SnI2. Consequently, short-circuit behaviors are eliminated, with significantly improved CsSnI3 solar-cell performance. Finally, the effects of incorporating SnCl2 and SnF2 into the CsSnI3 devices were investigated in conjunction with addition of piperazine to achieve CsSnI3 devices with a maximum power conversion efficiency of 3.83%.},
doi = {10.1021/acsaem.8b00866},
journal = {ACS Applied Energy Materials},
number = 8,
volume = 1,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 2018},
month = {Sun Jul 01 00:00:00 EDT 2018}
}
Web of Science
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