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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
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High-efficiency (>20%) planar carbon-based perovskite solar cells through device configuration engineering
Huiyin Zhang1, Yiming Li2, Shan Tan2
1School of Instrument Science and Opto Electronic Engineering, Beijing Information Science & Technology University, Beijing 100192, PR China.
Journal of Colloid and Interface Science
|November 29, 2021
Summary
Engineered carbon-based perovskite solar cells (C-PSCs) achieve record 20.04% power conversion efficiency. This breakthrough in planar C-PSCs offers enhanced stability and performance for future solar technology.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Carbon-based perovskite solar cells (C-PSCs) show promise due to their stability.
- Planar C-PSCs exhibit lower power conversion efficiency (PCE) compared to metal-based counterparts.
- The simple architecture of planar C-PSCs necessitates precise device configuration.
Purpose of the Study:
- To enhance the performance of planar C-PSCs through device configuration engineering.
- To improve the perovskite active layer and carbon electrode for higher PCE.
- To achieve a record PCE for planar C-PSCs.
Main Methods:
- Engineered the perovskite active layer using component and additive strategies to optimize crystallization and absorption.
- Modified the carbon electrode to improve back-interface contact by balancing flexibility and conductivity.
- Investigated the impact of these modifications on charge carrier dynamics and recombination.
Main Results:
- Achieved a record power conversion efficiency (PCE) of 20.04% for planar C-PSCs.
- Demonstrated improved photogenerated carrier generation and reduced nonradiative recombination in the perovskite layer.
- Established an excellent back-interface contact for fast charge transfer and efficient carrier collection.
- Attained excellent long-term stability, retaining 94% performance after 1000 hours of unencapsulated storage.
Conclusions:
- Device configuration engineering is crucial for advancing planar C-PSC performance.
- Optimized perovskite crystallization and carbon electrode properties lead to record PCE.
- The developed planar C-PSCs offer a promising combination of high efficiency and stability.
