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

Abstract

Abstract 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 3 NH 3 PbI 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 °C, the 10% w/w PbSe‐doped CH 3 NH 3 PbI 3 films exhibited >140‐fold stability improvement over pristine CH 3 NH 3 PbI 3 films. As the PbSe‐doped CH 3 NH 3 PbI 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:
Research Org.:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
OSTI Identifier:
1461855
Alternate Identifier(s):
OSTI ID: 1459460
Report Number(s):
NREL/JA-5900-71096
Journal ID: ISSN 0935-9648
Grant/Contract Number:  
AC36-08GO28308; DE‐AC36‐08GO28308; DE‐AC02‐06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 30; Journal Issue: 34; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; chemical doping; iodine diffusion; moisture stability; perovskite solar cells

Citation Formats

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., 2018. 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. https://doi.org/10.1002/adma.201800973
Gong, Jue, Yang, Mengjin, Rebollar, Dominic, Rucinski, Jordan, Liveris, Zachary, Zhu, Kai, and Xu, Tao. Sun . "Divalent Anionic Doping in Perovskite Solar Cells for Enhanced Chemical Stability". United States. https://doi.org/10.1002/adma.201800973. https://www.osti.gov/servlets/purl/1461855.
@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 = {Abstract 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 3 NH 3 PbI 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 °C, the 10% w/w PbSe‐doped CH 3 NH 3 PbI 3 films exhibited >140‐fold stability improvement over pristine CH 3 NH 3 PbI 3 films. As the PbSe‐doped CH 3 NH 3 PbI 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.},
doi = {10.1002/adma.201800973},
journal = {Advanced Materials},
number = 34,
volume = 30,
place = {United States},
year = {Sun Jul 08 00:00:00 EDT 2018},
month = {Sun Jul 08 00:00:00 EDT 2018}
}

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Cited by: 44 works
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Figures / Tables:

Figure 1 Figure 1: Schematic depiction of the hypothesized PbSe:MAPbI3 perovskite structure. Hypothesized lattice structure is oriented with 45° off a axis of a tetragonal unit cell with only one Se2− ion (yellow sphere) and one CH3NH3+ (carbon: gray sphere, nitrogen: brown, and hydrogen atoms: blue) shown for clarity. For PbI3− framework,more » Pb2+ is represented by green spheres, and I− pink spheres. Divalent Se2− (dash circled) poses strong electrostatic interaction (dark red wedges) with partially cationic ammonium hydrogen.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.