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Dual Function Modification of Cs2CO3 for Efficient Perovskite Solar Cells
Debei Liu1,2, Qingxin Zeng1, Cunyun Xu1
1Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, China.
Nanomaterials (Basel, Switzerland)
|September 23, 2022
Summary
Researchers enhanced perovskite solar cell (PeSC) power conversion efficiency (PCE) to 22.9% by modifying indium tin oxide (ITO) with cesium carbonate (Cs2CO3). This strategy simultaneously improves electrical and optical properties for better solar energy conversion.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Organic-inorganic hybrid perovskite solar cells (PeSCs) show great potential for solar energy conversion.
- Improving power conversion efficiency (PCE) is a key research focus.
- Simultaneously enhancing electrical and optical properties remains a challenge.
Purpose of the Study:
- To develop a simple strategy for simultaneously improving the electrical and optical properties of PeSCs.
- To enhance the power conversion efficiency (PCE) of PeSCs.
- To investigate the effect of cesium carbonate (Cs2CO3) modification on indium tin oxide (ITO) substrates.
Main Methods:
- Modification of indium tin oxide (ITO) substrates with cesium carbonate (Cs2CO3).
- Fabrication of PeSCs using modified ITO substrates.
- Characterization of photovoltaic performance, electrical properties, and optical properties of the devices.
Main Results:
- Achieved a PCE of 22.9%, an improvement from the reference device's 19.8%.
- The Cs2CO3 modification layer enhanced electron extraction capability.
- The Cs2CO3 layer optimized light field distribution within the device, an unreported optical optimization effect.
Conclusions:
- Cesium carbonate (Cs2CO3) modification of ITO is a simple and effective strategy for high-performance PeSCs.
- Simultaneous improvement of electrical and optical properties leads to enhanced PCE.
- This work offers a novel approach for advancing PeSC technology.
