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Flash Infrared Annealing for Perovskite Solar Cell Processing
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Interface Engineering Based on Liquid Metal for Compact-Layer-free, Fully Printable Mesoscopic Perovskite Solar Cells
Yumin Zhang1, Jianhong Zhao1, Jin Zhang1
1Yunnan Key Laboratory for Micro/Nano Materials and Technology, School of Materials Science and Engineering , Yunnan University , Kunming 650091 , P. R. China.
ACS Applied Materials & Interfaces
|April 25, 2018
Summary
Liquid metal (LM) interface modification enhances hole extraction in printable perovskite solar cells (PSCs). This advancement boosts power conversion efficiency by 26% in hole-transport-layer-free devices.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Printable perovskite solar cells (PSCs) offer a low-cost, eco-friendly photovoltaic technology.
- Hole-transport-layer-free mesoscopic PSCs suffer from inefficient hole extraction.
- Interface engineering is crucial for improving PSC performance.
Purpose of the Study:
- To investigate the use of liquid metal (LM) as an interface modifier in printable, hole-transport-layer-free PSCs.
- To enhance hole extraction and improve the contact properties at the carbon/perovskite interface.
- To optimize PSC performance using LM for potential industrial applications.
Main Methods:
- Fabrication of mesoscopic, hole-transport-layer-free PSCs using a printing process.
- Incorporation of liquid metal (Galinstan) as an interface modifier between ZrO2 and the carbon electrode.
- Characterization of device performance, including power conversion efficiency and carrier transfer resistance.
Main Results:
- Liquid metal (LM) effectively improved hole extraction and contact properties at the ZrO2/carbon interface.
- Carrier transfer resistance at the carbon/perovskite interface was significantly reduced.
- Optimized triple mesoscopic PSCs achieved a power conversion efficiency of 13.51%, a 26% increase compared to devices without LM.
Conclusions:
- Liquid metal (LM) serves as a highly effective interface modifier for printable perovskite solar cells.
- LM integration offers a novel technique to enhance charge extraction and device performance in PSCs.
- This approach holds promise for advancing the industrial application of low-cost, eco-friendly photovoltaic technologies.
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