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Title: Defect Passivation of Organic–Inorganic Hybrid Perovskites by Diammonium Iodide toward High-Performance Photovoltaic Devices

Abstract

The polycrystalline feature of solutionprocessed perovskite film and its ionic nature inevitably incur substantial crystallographic defects, especially at the film surface and the grain boundaries (GBs). Here, a simple defect passivation method was exploited by post-treating CH3NH3PbI3 (MAPbI3) film with a rationally selected diammonium iodide. The molecular structure of the used diammonium iodide was discovered to play a critical role in affecting the phase purity of treated MAPbI3. Both NH3I(CH2)4NH3I and NH3I(CH2)2O(CH2)2NH3I (EDBE) induce three-dimensional (3D) to two-dimensional (2D) perovskite phase transformation during the treatment while only NH3I(CH2)8NH3I (C8) successfully passivates perovskite surface and GBs without forming 2D perovskite because of the elevated activation energy arising from its unique anti-gauche isomerization. In conclusion, defect passivation of MAPbI3 was clearly confirmed by scanning Kelvin probe microscopy (SKPM) and time-resolved photoluminescence (TRPL) studies, which results in the reduced recombination loss in derived devices. Consequently, the perovskite solar cell with C8 passivation showed a much improved power conversion efficiency (PCE) of 17.60% compared to the control device PCE of 14.64%.

Authors:
 [1];  [1];  [1];  [1];  [2]
+ Show Author Affiliations
  1. Univ. of Washington, Seattle, WA (United States). Dept. of Materials Science and Engineering
  2. Univ. of Washington, Seattle, WA (United States). Dept. of Materials Science and Engineering; Univ. of Washington, Seattle, WA (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); Asian Office of Aerospace R&D
Contributing Org.:
Collaborative Innovation Center of Suzhou Nano Science and Technology; Boeing-Johnson Foundation
OSTI Identifier:
1343582
Report Number(s):
DOE-UW-Jen-16
Journal ID: ISSN 2380-8195
Grant/Contract Number:  
EE0006710; DMR-1608279; N00014-14-1- 0246; FA2386-15-1-410
Resource Type:
Accepted Manuscript
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 1; Journal Issue: 4; Journal ID: ISSN 2380-8195
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE

Citation Formats

Zhao, Ting, Chueh, Chu-Chen, Chen, Qi, Rajagopal, Adharsh, and Jen, Alex K. -Y. Defect Passivation of Organic–Inorganic Hybrid Perovskites by Diammonium Iodide toward High-Performance Photovoltaic Devices. United States: N. p., 2016. Web. doi:10.1021/acsenergylett.6b00327.
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Zhao, Ting, Chueh, Chu-Chen, Chen, Qi, Rajagopal, Adharsh, & Jen, Alex K. -Y. Defect Passivation of Organic–Inorganic Hybrid Perovskites by Diammonium Iodide toward High-Performance Photovoltaic Devices. United States. https://doi.org/10.1021/acsenergylett.6b00327
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Zhao, Ting, Chueh, Chu-Chen, Chen, Qi, Rajagopal, Adharsh, and Jen, Alex K. -Y. Mon . "Defect Passivation of Organic–Inorganic Hybrid Perovskites by Diammonium Iodide toward High-Performance Photovoltaic Devices". United States. https://doi.org/10.1021/acsenergylett.6b00327. https://www.osti.gov/servlets/purl/1343582.
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@article{osti_1343582,
title = {Defect Passivation of Organic–Inorganic Hybrid Perovskites by Diammonium Iodide toward High-Performance Photovoltaic Devices},
author = {Zhao, Ting and Chueh, Chu-Chen and Chen, Qi and Rajagopal, Adharsh and Jen, Alex K. -Y.},
abstractNote = {The polycrystalline feature of solutionprocessed perovskite film and its ionic nature inevitably incur substantial crystallographic defects, especially at the film surface and the grain boundaries (GBs). Here, a simple defect passivation method was exploited by post-treating CH3NH3PbI3 (MAPbI3) film with a rationally selected diammonium iodide. The molecular structure of the used diammonium iodide was discovered to play a critical role in affecting the phase purity of treated MAPbI3. Both NH3I(CH2)4NH3I and NH3I(CH2)2O(CH2)2NH3I (EDBE) induce three-dimensional (3D) to two-dimensional (2D) perovskite phase transformation during the treatment while only NH3I(CH2)8NH3I (C8) successfully passivates perovskite surface and GBs without forming 2D perovskite because of the elevated activation energy arising from its unique anti-gauche isomerization. In conclusion, defect passivation of MAPbI3 was clearly confirmed by scanning Kelvin probe microscopy (SKPM) and time-resolved photoluminescence (TRPL) studies, which results in the reduced recombination loss in derived devices. Consequently, the perovskite solar cell with C8 passivation showed a much improved power conversion efficiency (PCE) of 17.60% compared to the control device PCE of 14.64%.},
doi = {10.1021/acsenergylett.6b00327},
journal = {ACS Energy Letters},
number = 4,
volume = 1,
place = {United States},
year = {Mon Sep 12 00:00:00 EDT 2016},
month = {Mon Sep 12 00:00:00 EDT 2016}
}
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https://doi.org/10.1021/acsenergylett.6b00327
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    Nonconfinement Structure Revealed in Dion–Jacobson Type Quasi‐2D Perovskite Expedites Interlayer Charge Transport
    journal, October 2019

    Recent Progresses on Defect Passivation toward Efficient Perovskite Solar Cells
    journal, April 2020

    • Gao, Feng; Zhao, Yang; Zhang, Xingwang
    • Advanced Energy Materials, Vol. 10, Issue 13
    • DOI: 10.1002/aenm.201902650

    Ultra-high open-circuit voltage of tin perovskite solar cells via an electron transporting layer design
    journal, March 2020

    Surface passivation of perovskite film for efficient solar cells
    journal, April 2019

    Bifunctional π-conjugated ligand assisted stable and efficient perovskite solar cell fabrication via interfacial stitching
    journal, January 2019

    • Wei, Feijie; Jiao, Bo; Dong, Hua
    • Journal of Materials Chemistry A, Vol. 7, Issue 27
    • DOI: 10.1039/c9ta03898a

    Broadband white light emission from one-dimensional zigzag edge-sharing perovskite
    journal, January 2020

    Analysing the Prospects of Perovskite Solar Cells within the Purview of Recent Scientific Advancements
    journal, June 2018

    • Bhat, Aakash; Dhamaniya, Bhanu; Chhillar, Priyanka
    • Crystals, Vol. 8, Issue 6
    • DOI: 10.3390/cryst8060242

    Slow surface passivation and crystal relaxation with additives to improve device performance and durability for tin-based perovskite solar cells
    journal, January 2018

    • Jokar, Efat; Chien, Cheng-Hsun; Fathi, Amir
    • Energy & Environmental Science, Vol. 11, Issue 9
    • DOI: 10.1039/c8ee00956b

    Imperfections and their passivation in halide perovskite solar cells
    text, January 2019

    • J., Huang,; B., Chen,; P. N., Rudd,
    • The University of North Carolina at Chapel Hill University Libraries
    • DOI: 10.17615/kzq8-3k31

    Capturing the Sun: A Review of the Challenges and Perspectives of Perovskite Solar Cells
    journal, June 2017

    • Petrus, Michiel L.; Schlipf, Johannes; Li, Cheng
    • Advanced Energy Materials, Vol. 7, Issue 16
    • DOI: 10.1002/aenm.201700264

    Defect‐Passivation Using Organic Dyes for Enhanced Efficiency and Stability of Perovskite Solar Cells
    journal, May 2020

    Reconfiguration of interfacial energy band structure for high-performance inverted structure perovskite solar cells
    journal, October 2019

    Mixed-Dimensional Naphthylmethylammonium-Methylammonium Lead Iodide Perovskites with Improved Thermal Stability
    journal, January 2020

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