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Title: Divalent Anionic Doping in Perovskite Solar Cells for Enhanced Chemical Stability

The chemical stabilities of hybrid perovskite materials demand further improvement toward long-term and large-scale photovoltaic applications. Herein, the enhanced chemical stability of CH 3NH 3PbI 3 is reported by doping the divalent anion Se 2- in the form of PbSe in precursor solutions to enhance the hydrogen-bonding-like interactions between the organic cations and the inorganic framework. As a result, in 100% humidity at 40 degrees C, the 10% w/w PbSe-doped CH 3NH 3PbI 3 films exhibited >140-fold stability improvement over pristine CH 3NH 3PbI 3 films. As the PbSe-doped CH 3NH 3PbI 3 films maintained the perovskite structure, a top efficiency of 10.4% with 70% retention after 700 h aging in ambient air is achieved with an unencapsulated 10% w/w PbSe:MAPbI 3-based cell. As a bonus, the incorporated Se 2- also effectively suppresses iodine diffusion, leading to enhanced chemical stability of the silver electrodes.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [2] ; ORCiD logo [1]
  1. Northern Illinois Univ., DeKalb, IL (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Report Number(s):
NREL/JA-5900-71096
Journal ID: ISSN 0935-9648
Grant/Contract Number:
AC36-08GO28308; AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 30; Journal Issue: 34; Journal ID: ISSN 0935-9648
Publisher:
Wiley
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)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; chemical doping; iodine diffusion; moisture stability; perovskite solar cells
OSTI Identifier:
1461855
Alternate Identifier(s):
OSTI ID: 1459460

Gong, Jue, Yang, Mengjin, Rebollar, Dominic, Rucinski, Jordan, Liveris, Zachary, Zhu, Kai, and Xu, Tao. Divalent Anionic Doping in Perovskite Solar Cells for Enhanced Chemical Stability. United States: N. p., Web. doi:10.1002/adma.201800973.
Gong, Jue, Yang, Mengjin, Rebollar, Dominic, Rucinski, Jordan, Liveris, Zachary, Zhu, Kai, & Xu, Tao. Divalent Anionic Doping in Perovskite Solar Cells for Enhanced Chemical Stability. United States. doi:10.1002/adma.201800973.
Gong, Jue, Yang, Mengjin, Rebollar, Dominic, Rucinski, Jordan, Liveris, Zachary, Zhu, Kai, and Xu, Tao. 2018. "Divalent Anionic Doping in Perovskite Solar Cells for Enhanced Chemical Stability". United States. doi:10.1002/adma.201800973.
@article{osti_1461855,
title = {Divalent Anionic Doping in Perovskite Solar Cells for Enhanced Chemical Stability},
author = {Gong, Jue and Yang, Mengjin and Rebollar, Dominic and Rucinski, Jordan and Liveris, Zachary and Zhu, Kai and Xu, Tao},
abstractNote = {The chemical stabilities of hybrid perovskite materials demand further improvement toward long-term and large-scale photovoltaic applications. Herein, the enhanced chemical stability of CH3NH3PbI3 is reported by doping the divalent anion Se2- in the form of PbSe in precursor solutions to enhance the hydrogen-bonding-like interactions between the organic cations and the inorganic framework. As a result, in 100% humidity at 40 degrees C, the 10% w/w PbSe-doped CH3NH3PbI3 films exhibited >140-fold stability improvement over pristine CH3NH3PbI3 films. As the PbSe-doped CH3NH3PbI3 films maintained the perovskite structure, a top efficiency of 10.4% with 70% retention after 700 h aging in ambient air is achieved with an unencapsulated 10% w/w PbSe:MAPbI3-based cell. As a bonus, the incorporated Se2- also effectively suppresses iodine diffusion, leading to enhanced chemical stability of the silver electrodes.},
doi = {10.1002/adma.201800973},
journal = {Advanced Materials},
number = 34,
volume = 30,
place = {United States},
year = {2018},
month = {7}
}

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