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Updated: Jul 7, 2026
05:15
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
Dielectric-Chemical Interfacial Engineering Toward Improved Efficiency and Reverse-Bias Stability for Air-Processed
Zhenkun Zhu1, Tonghui Guo1, Wei Liu2
1School of Integrated Circuits, Wuhan University, Wuhan, P. R. China.
Small Methods
|July 6, 2026
Summary
This study introduces a new interface engineering method for perovskite solar cells (PSCs) using metal oxide nanoparticles. This technique enhances device efficiency and operational stability by passivating defects and improving electrical properties.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Air-processed perovskite solar cells (PSCs) suffer from interface instability due to moisture exposure during fabrication.
- This instability leads to increased nonradiative recombination, ion migration, and poor reverse-bias stress tolerance.
- Existing passivation methods mainly reduce defect density but do not address these combined issues.
Purpose of the Study:
- To develop a novel dielectric-chemical interfacial engineering strategy for PSCs.
- To improve the performance and operational stability of PSCs and perovskite solar modules (PSMs).
- To investigate the role of metal oxide nanoparticles at the perovskite/hole transport layer (HTL) interface.
Main Methods:
- Solution-processed metal oxide nanoparticles were deposited at the perovskite/HTL interface.
- The chemical passivation (Pb-O coordination) and dielectric screening (high-κ environment) effects were analyzed.
- Zirconium dioxide (ZrO2) was identified as the most effective material among tested metal oxides.
Main Results:
- ZrO2 nanoparticles chemically passivated Pb-related defects and provided dielectric screening.
- This suppressed recombination, mitigated electric-field localization, and restrained ion migration.
- Achieved power conversion efficiencies of 25.60% for PSCs and 22.85% for PSMs.
Conclusions:
- Dielectric-chemical interfacial engineering with ZrO2 significantly enhances PSC performance and stability.
- Devices showed improved reverse breakdown voltage (-4.0 V) and long-term operational stability (96.8% efficiency retention after 1470 h).
- This approach offers a promising strategy for robust perovskite solar technology.
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