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Title: Improved stability and efficiency of perovskite solar cells with submicron flexible barrier films deposited in air

Abstract

Here in this paper, we report on submicron organosilicate barrier films produced rapidly in air by a scalable spray plasma process that improves both the stability and efficiency of perovskite solar cells. The plasma is at sufficiently low temperature to prevent damage to the underlying layers. Oxidizing species and heat from the plasma improve device performance by enhancing both interfacial contact and the conductivity of the hole transporting layer. The thickness of the barrier films is tunable and transparent over the entire visible spectrum. The morphology and density of the barrier are shown to improve with the addition of a fluorine-based precursor. Devices with submicron coatings exhibited significant improvements in stability, maintaining 92% of their initial power conversion efficiencies after more than 3000 h in dry heat (85 °C, 25% RH) while also being resistant to degradation under simulated operational conditions of continuous exposure to light, heat, and moisture. X-ray diffraction measurements performed while heating showed the barrier film dramatically slows the formation of PbI 2. The barrier films also are compatible with flexible devices, exhibiting no signs of cracking or delamination after 10000 bending cycles on a 127 μm substrate with a bending radius of 1 cm.

Authors:
 [1];  [2];  [2];  [2];  [3];  [3];  [2]
  1. Stanford Univ., CA (United States). Dept. of Applied Physics
  2. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1423463
Grant/Contract Number:
DGE-1656518; EECS-1542152; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 5; Journal Issue: 44; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Rolston, Nicholas, Printz, Adam D., Hilt, Florian, Hovish, Michael Q., Brüning, Karsten, Tassone, Christopher J., and Dauskardt, Reinhold H.. Improved stability and efficiency of perovskite solar cells with submicron flexible barrier films deposited in air. United States: N. p., 2017. Web. doi:10.1039/c7ta09178h.
Rolston, Nicholas, Printz, Adam D., Hilt, Florian, Hovish, Michael Q., Brüning, Karsten, Tassone, Christopher J., & Dauskardt, Reinhold H.. Improved stability and efficiency of perovskite solar cells with submicron flexible barrier films deposited in air. United States. doi:10.1039/c7ta09178h.
Rolston, Nicholas, Printz, Adam D., Hilt, Florian, Hovish, Michael Q., Brüning, Karsten, Tassone, Christopher J., and Dauskardt, Reinhold H.. Fri . "Improved stability and efficiency of perovskite solar cells with submicron flexible barrier films deposited in air". United States. doi:10.1039/c7ta09178h.
@article{osti_1423463,
title = {Improved stability and efficiency of perovskite solar cells with submicron flexible barrier films deposited in air},
author = {Rolston, Nicholas and Printz, Adam D. and Hilt, Florian and Hovish, Michael Q. and Brüning, Karsten and Tassone, Christopher J. and Dauskardt, Reinhold H.},
abstractNote = {Here in this paper, we report on submicron organosilicate barrier films produced rapidly in air by a scalable spray plasma process that improves both the stability and efficiency of perovskite solar cells. The plasma is at sufficiently low temperature to prevent damage to the underlying layers. Oxidizing species and heat from the plasma improve device performance by enhancing both interfacial contact and the conductivity of the hole transporting layer. The thickness of the barrier films is tunable and transparent over the entire visible spectrum. The morphology and density of the barrier are shown to improve with the addition of a fluorine-based precursor. Devices with submicron coatings exhibited significant improvements in stability, maintaining 92% of their initial power conversion efficiencies after more than 3000 h in dry heat (85 °C, 25% RH) while also being resistant to degradation under simulated operational conditions of continuous exposure to light, heat, and moisture. X-ray diffraction measurements performed while heating showed the barrier film dramatically slows the formation of PbI2. The barrier films also are compatible with flexible devices, exhibiting no signs of cracking or delamination after 10000 bending cycles on a 127 μm substrate with a bending radius of 1 cm.},
doi = {10.1039/c7ta09178h},
journal = {Journal of Materials Chemistry. A},
number = 44,
volume = 5,
place = {United States},
year = {Fri Oct 27 00:00:00 EDT 2017},
month = {Fri Oct 27 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 27, 2018
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