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Title: Controllable Growth of Perovskite Films by Room-Temperature Air Exposure for Efficient Planar Heterojunction Photovoltaic Cells

Abstract

A two-step-solution-processing approach has been established to grow void-free perovskite films for low-cost and high-performance planar heterojunction photovoltaic devices. We generally applied a high-temperature thermal annealing treatment in order to drive the diffusion of CH3NH3I precursor molecules into the compact PbI2 layer to form perovskite films. But, thermal annealing for extended periods would lead to degraded device performance due to the defects generated by decomposition of perovskite into PbI2. In this work, we explored a controllable layer-by-layer spin-coating method to grow bilayer CH3NH3I/PbI2 films, and then drive the interdiffusion between PbI2 and CH3NH3I layers by a simple room-temperature-air-exposure for making well-oriented, highly-crystalline perovskite films without thermal annealing. This high degree of crystallinity resulted in a carrier diffusion length of ~ 800 nm and high device efficiency of 15.6%, which is comparable to the reported values from thermally-annealed perovskite films based counterparts. Finally, the simplicity and high device performance of this processing approach is highly promising for direct integration into industrial-scale device manufacture.

Authors:
 [1];  [2];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [2];  [1];  [1]
+ Show Author Affiliations
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1279393
Alternate Identifier(s):
OSTI ID: 1786131
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 54; Journal Issue: 49; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; air exposure; in situ X-ray diffraction; perovskites; photovoltaic devices; thin films

Citation Formats

Yang, Bin, Dyck, Ondrej, Poplawsky, Jonathan, Keum, Jong, Das, Sanjib, Puretzky, Alexander, Aytug, Tolga, Joshi, Pooran C., Rouleau, Christopher M., Duscher, Gerd, Geohegan, David B., and Xiao, Kai. Controllable Growth of Perovskite Films by Room-Temperature Air Exposure for Efficient Planar Heterojunction Photovoltaic Cells. United States: N. p., 2015. Web. doi:10.1002/anie.201505882.
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Yang, Bin, Dyck, Ondrej, Poplawsky, Jonathan, Keum, Jong, Das, Sanjib, Puretzky, Alexander, Aytug, Tolga, Joshi, Pooran C., Rouleau, Christopher M., Duscher, Gerd, Geohegan, David B., & Xiao, Kai. Controllable Growth of Perovskite Films by Room-Temperature Air Exposure for Efficient Planar Heterojunction Photovoltaic Cells. United States. https://doi.org/10.1002/anie.201505882
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Yang, Bin, Dyck, Ondrej, Poplawsky, Jonathan, Keum, Jong, Das, Sanjib, Puretzky, Alexander, Aytug, Tolga, Joshi, Pooran C., Rouleau, Christopher M., Duscher, Gerd, Geohegan, David B., and Xiao, Kai. Tue . "Controllable Growth of Perovskite Films by Room-Temperature Air Exposure for Efficient Planar Heterojunction Photovoltaic Cells". United States. https://doi.org/10.1002/anie.201505882. https://www.osti.gov/servlets/purl/1279393.
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@article{osti_1279393,
title = {Controllable Growth of Perovskite Films by Room-Temperature Air Exposure for Efficient Planar Heterojunction Photovoltaic Cells},
author = {Yang, Bin and Dyck, Ondrej and Poplawsky, Jonathan and Keum, Jong and Das, Sanjib and Puretzky, Alexander and Aytug, Tolga and Joshi, Pooran C. and Rouleau, Christopher M. and Duscher, Gerd and Geohegan, David B. and Xiao, Kai},
abstractNote = {A two-step-solution-processing approach has been established to grow void-free perovskite films for low-cost and high-performance planar heterojunction photovoltaic devices. We generally applied a high-temperature thermal annealing treatment in order to drive the diffusion of CH3NH3I precursor molecules into the compact PbI2 layer to form perovskite films. But, thermal annealing for extended periods would lead to degraded device performance due to the defects generated by decomposition of perovskite into PbI2. In this work, we explored a controllable layer-by-layer spin-coating method to grow bilayer CH3NH3I/PbI2 films, and then drive the interdiffusion between PbI2 and CH3NH3I layers by a simple room-temperature-air-exposure for making well-oriented, highly-crystalline perovskite films without thermal annealing. This high degree of crystallinity resulted in a carrier diffusion length of ~ 800 nm and high device efficiency of 15.6%, which is comparable to the reported values from thermally-annealed perovskite films based counterparts. Finally, the simplicity and high device performance of this processing approach is highly promising for direct integration into industrial-scale device manufacture.},
doi = {10.1002/anie.201505882},
journal = {Angewandte Chemie (International Edition)},
number = 49,
volume = 54,
place = {United States},
year = {Tue Dec 01 00:00:00 EST 2015},
month = {Tue Dec 01 00:00:00 EST 2015}
}
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https://doi.org/10.1002/anie.201505882
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Works referenced in this record:

Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process
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    Works referencing / citing this record:

    Electron‐Beam‐Related Studies of Halide Perovskites: Challenges and Opportunities
    journal, February 2020

    • Ran, Junhui; Dyck, Ondrej; Wang, Xiaozheng
    • Advanced Energy Materials, Vol. 10, Issue 26
    • DOI: 10.1002/aenm.201903191

    A semiconducting molecular ferroelectric with a bandgap much lower than that of BiFeO3
    journal, January 2017

    • Li, Peng-Fei; Tang, Yuan-Yuan; Liao, Wei-Qiang
    • NPG Asia Materials, Vol. 9, Issue 1
    • DOI: 10.1038/am.2016.193

    Methodologies for high efficiency perovskite solar cells
    journal, June 2016

    A perspective on the recent progress in solution-processed methods for highly efficient perovskite solar cells
    journal, October 2016

    • Chilvery, Ashwith; Das, Sanjib; Guggilla, Padmaja
    • Science and Technology of Advanced Materials, Vol. 17, Issue 1
    • DOI: 10.1080/14686996.2016.1226120

    Dew point temperature as an invariant replacement for relative humidity for advanced perovskite solar cell fabrication systems
    journal, January 2018

    • Ko, Yohan; Lee, Chanyong; Kim, Youbin
    • Journal of Materials Chemistry A, Vol. 6, Issue 42
    • DOI: 10.1039/c8ta06689b

    Atomic scale insights into structure instability and decomposition pathway of methylammonium lead iodide perovskite
    journal, November 2018

    A perspective on the recent progress in solution-processed methods for highly efficient perovskite solar cells
    journal, October 2016

    • Chilvery, Ashwith; Das, Sanjib; Guggilla, Padmaja
    • Science and Technology of Advanced Materials, Vol. 17, Issue 1
    • DOI: 10.1080/14686996.2016.1226120

    Methodologies for high efficiency perovskite solar cells
    journal, June 2016

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