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Title: Is Cu a stable electrode material in hybrid perovskite solar cells for a 30-year lifetime?

Journal Article · · Energy & Environmental Science
DOI:https://doi.org/10.1039/C6EE02980A· OSTI ID:1342623

One grand challenge for long-lived perovskite solar cells is that the common electrode materials in solar cells, such as silver and aluminum or even gold, strongly react with hybrid perovskites. Here we report the evaluation of the potential of copper (Cu) as the electrode material in perovskite solar cells for long-term stability. In encapsulated devices which limit exposure to oxygen and moisture, Cu in direct contact with CH3NH3PbI3 showed no reaction at laboratory time scales, and is predicted to be stable for almost 170 years at room temperature and over 22 years at the nominal operating cell temperature of 40 °C. No diffusion of Cu into CH3NH3PbI3 has been observed after thermal annealing for over 100 hours at 80 °C, nor does Cu cause charge trap states in direct contact with CH3NH3PbI3 after long-term thermal annealing or illumination. High performance devices with efficiency above 20% with Cu electrode retains 98% of the initial efficiency after 816 hours storage in ambient environment without encapsulation. Finally, the results indicate Cu is a promising low-cost electrode material for perovskite solar cells for long-term operation.

Research Organization:
Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
EE0006709
OSTI ID:
1342623
Journal Information:
Energy & Environmental Science, Vol. 9, Issue 12; ISSN 1754-5692
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 211 works
Citation information provided by
Web of Science

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Solution‐Processable Perovskite Solar Cells toward Commercialization: Progress and Challenges journal April 2019
A Review of Perovskites Solar Cell Stability journal February 2019
High Efficiency Planar p‐i‐n Perovskite Solar Cells Using Low‐Cost Fluorene‐Based Hole Transporting Material journal April 2019
High Responsivity and Response Speed Single‐Layer Mixed‐Cation Lead Mixed‐Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large‐Area Rigid and Flexible Substrates journal May 2019
Efficient Flexible Solar Cell based on Composition-Tailored Hybrid Perovskite journal June 2017
Influence of Radiation on the Properties and the Stability of Hybrid Perovskites journal November 2017
Versatility of Carbon Enables All Carbon Based Perovskite Solar Cells to Achieve High Efficiency and High Stability journal April 2018
Interface and Defect Engineering for Metal Halide Perovskite Optoelectronic Devices journal September 2018
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Nonradiative Recombination in Perovskite Solar Cells: The Role of Interfaces journal October 2019
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An Analytical Approach to CH 3 NH 3 PbI 3 Perovskite Solar Cells Based on Different Hole Transport Materials journal May 2019
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Mixed Halide Perovskite Solar Cells: Progress and Challenges journal February 2019
Operational stability of perovskite light emitting diodes journal January 2020
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A Computational Approach toward the Enhanced Performance of Graphene–Perovskite Schottky Solar Cells journal December 2019
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High Responsivity and Response Speed Single‐Layer Mixed‐Cation Lead Mixed‐Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large‐Area Rigid and Flexible Substrates journal December 2019
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Nonradiative Recombination in Perovskite Solar Cells: The Role of Interfaces text January 2019

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