Scaling behavior of moisture-induced grain degradation in polycrystalline hybrid perovskite thin films
Abstract
The stability of perovskite solar cells has shown a huge variation with respect to the film process and film morphology, while the underlining mechanism for the morphology-dependent degradation of the perovskite film has remained elusive. Herein, we report a scaling behavior of moisture-induced grain degradation in polycrystalline CH3NH3PbI3 films. The degradation rates of CH3NH3PbI3 films in moisture were shown to be sensitive to the grain sizes. The duration that was needed for different films to degrade by the same percent showed a linear relationship with the grain size, despite the fact that the films were formed by five different deposition methods. This scaling behavior can be explained by the degradation along the in-plane direction, which is initiated at the grain boundary (GB). The GBs of CH3NH3PbI3 films consist of an amorphous intergranular layer, which allows quick diffusion of moisture into the perovskite films. It was found that thermal annealing induced surface self-passivation plays a critical role in stabilizing the surfaces of thin films and single crystals by reducing the moisture-sensitive methylammonium ions at the surface. Finally, the determination of the scaling behavior of grain degradation highlights the importance of stabilizing the GBs to improve the stability of perovskite solar cells.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- OSTI Identifier:
- 1342747
- Grant/Contract Number:
- EE0006709
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy & Environmental Science
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 2; Journal ID: ISSN 1754-5692
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Wang, Qi, Chen, Bo, Liu, Ye, Deng, Yehao, Bai, Yang, Dong, Qingfeng, and Huang, Jinsong. Scaling behavior of moisture-induced grain degradation in polycrystalline hybrid perovskite thin films. United States: N. p., 2017.
Web. doi:10.1039/C6EE02941H.
Wang, Qi, Chen, Bo, Liu, Ye, Deng, Yehao, Bai, Yang, Dong, Qingfeng, & Huang, Jinsong. Scaling behavior of moisture-induced grain degradation in polycrystalline hybrid perovskite thin films. United States. https://doi.org/10.1039/C6EE02941H
Wang, Qi, Chen, Bo, Liu, Ye, Deng, Yehao, Bai, Yang, Dong, Qingfeng, and Huang, Jinsong. Sun .
"Scaling behavior of moisture-induced grain degradation in polycrystalline hybrid perovskite thin films". United States. https://doi.org/10.1039/C6EE02941H. https://www.osti.gov/servlets/purl/1342747.
@article{osti_1342747,
title = {Scaling behavior of moisture-induced grain degradation in polycrystalline hybrid perovskite thin films},
author = {Wang, Qi and Chen, Bo and Liu, Ye and Deng, Yehao and Bai, Yang and Dong, Qingfeng and Huang, Jinsong},
abstractNote = {The stability of perovskite solar cells has shown a huge variation with respect to the film process and film morphology, while the underlining mechanism for the morphology-dependent degradation of the perovskite film has remained elusive. Herein, we report a scaling behavior of moisture-induced grain degradation in polycrystalline CH3NH3PbI3 films. The degradation rates of CH3NH3PbI3 films in moisture were shown to be sensitive to the grain sizes. The duration that was needed for different films to degrade by the same percent showed a linear relationship with the grain size, despite the fact that the films were formed by five different deposition methods. This scaling behavior can be explained by the degradation along the in-plane direction, which is initiated at the grain boundary (GB). The GBs of CH3NH3PbI3 films consist of an amorphous intergranular layer, which allows quick diffusion of moisture into the perovskite films. It was found that thermal annealing induced surface self-passivation plays a critical role in stabilizing the surfaces of thin films and single crystals by reducing the moisture-sensitive methylammonium ions at the surface. Finally, the determination of the scaling behavior of grain degradation highlights the importance of stabilizing the GBs to improve the stability of perovskite solar cells.},
doi = {10.1039/C6EE02941H},
journal = {Energy & Environmental Science},
number = 2,
volume = 10,
place = {United States},
year = {2017},
month = {1}
}
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Triple cation perovskite doped with the small molecule F4TCNQ for highly efficient stable photodetectors
journal, January 2020
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Water in hybrid perovskites: Bulk MAPbI 3 degradation via super-hydrous state
journal, April 2019
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Enhanced stability of guanidinium-based organic-inorganic hybrid lead triiodides in resistance switching
journal, August 2019
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Understanding size dependence of phase stability and band gap in CsPbI 3 perovskite nanocrystals
journal, January 2020
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The investigation of the unseen interrelationship of grain size, ionic defects, device physics and performance of perovskite solar cells
journal, January 2019
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Curing perovskites—a way towards control of crystallinity and improved stability
journal, February 2020
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Stabilizing halide perovskite surfaces for solar cell operation with wide-bandgap lead oxysalts
journal, August 2019
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A Review: Thermal Stability of Methylammonium Lead Halide Based Perovskite Solar Cells
journal, January 2019
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Hysteresis Passivation in Planar Perovskite Solar Cells Utilizing Facile Chemical Vapor Deposition Process and PCBM Interlayer
journal, November 2019
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Influence of Electrical Traps on the Current Density Degradation of Inverted Perovskite Solar Cells
journal, May 2019
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Toward Perovskite Solar Cell Commercialization: A Perspective and Research Roadmap Based on Interfacial Engineering
journal, June 2018
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Efficient Bifacial Passivation with Crosslinked Thioctic Acid for High‐Performance Methylammonium Lead Iodide Perovskite Solar Cells
journal, December 2019
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Exploring Inorganic Binary Alkaline Halide to Passivate Defects in Low-Temperature-Processed Planar-Structure Hybrid Perovskite Solar Cells
journal, April 2018
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Efficiency Exceeding 20% in Perovskite Solar Cells with Side-Chain Liquid Crystalline Polymer-Doped Perovskite Absorbers
journal, September 2018
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High‐Performance Flexible Perovskite Solar Cells via Precise Control of Electron Transport Layer
journal, October 2019
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Imaging Metal Halide Perovskites Material and Properties at the Nanoscale
journal, December 2019
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Goethite Quantum Dots as Multifunctional Additives for Highly Efficient and Stable Perovskite Solar Cells
journal, October 2019
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Liquid Crystal Molecule as “Binding Agent” Enables Superior Stable Perovskite Solar Cells with High Fill Factor
journal, May 2019
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Efficient ambient-air-stable solar cells with 2D–3D heterostructured butylammonium-caesium-formamidinium lead halide perovskites
journal, August 2017
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High Power UV-Light Irradiation as a New Method for Defect Passivation in Degraded Perovskite Solar Cells to Recover and Enhance the Performance
journal, July 2019
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Materials chemistry approaches to the control of the optical features of perovskite solar cells
journal, January 2017
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Low-dimensional halide perovskites: review and issues
journal, January 2018
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Stabilization of organometallic halide perovskite nanocrystals in aqueous solutions and their applications in copper ion detection
journal, January 2018
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Fractional deviations in precursor stoichiometry dictate the properties, performance and stability of perovskite photovoltaic devices
journal, January 2018
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A highly stable and efficient carbon electrode-based perovskite solar cell achieved via interfacial growth of 2D PEA 2 PbI 4 perovskite
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Effect of bidentate and tridentate additives on the photovoltaic performance and stability of perovskite solar cells
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A polar-hydrophobic ionic liquid induces grain growth and stabilization in halide perovskites
journal, January 2019
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Crystallization kinetics of rapid spray plasma processed multiple cation perovskites in open air
journal, January 2020
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Imperfections and their passivation in halide perovskite solar cells
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Synergistic Effect of Elevated Device Temperature and Excess Charge Carriers on the Rapid Light-Induced Degradation of Perovskite Solar Cells
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Attaining High Photovoltaic Efficiency and Stability with Multidimensional Perovskites.
text, January 2018
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2D Perovskites with Short Interlayer Distance for High-Performance Solar Cell Application
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Recent Advances in Halide Perovskite Single‐Crystal Thin Films: Fabrication Methods and Optoelectronic Applications
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Stabilizing halide perovskite surfaces for solar cell operation with wide-bandgap lead oxysalts
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The synergistic effect of cooperating solvent vapor annealing for high-efficiency planar inverted perovskite solar cells
journal, January 2019
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A nanopillar-structured perovskite-based efficient semitransparent solar module for power-generating window applications
journal, January 2020
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Strained hybrid perovskite thin films and their impact on the intrinsic stability of perovskite solar cells
journal, November 2017
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Crystallization kinetics and morphology control of formamidinium-cesium mixed-cation lead mixed-halide perovskite via tunability of the colloidal precursor solution
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Sulfonyl-based non-fullerene electron acceptor-assisted grain boundary passivation for efficient and stable perovskite solar cells
journal, January 2019
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Mixed 3D-2D passivation treatment for mixed-cation lead mixed-halide perovskite solar cells for higher efficiency and better stability
conference, February 2018
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Improving Performance and Stability of Planar Perovskite Solar Cells through Grain Boundary Passivation with Block Copolymers
journal, May 2019
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Liquid Crystal Molecule as “Binding Agent” Enables Superior Stable Perovskite Solar Cells with High Fill Factor
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Self-assembled propylammonium cations at grain boundaries and the film surface to improve the efficiency and stability of perovskite solar cells
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Effect of Precursor Stoichiometry on the Performance and Stability of MAPbBr3 Photovoltaic Devices
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