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Multifunctional Dicarboxylic Acid Molecules Enable 19.61% Efficiency in Carbon-Based Printable Mesoscopic Perovskite
Yongxiang Cai1, Dongjie Wang1, Xinyi Zhao1
1Engineering Research Center of Electronic Information Materials and Devices of Ministry of Education, Guangxi Key Laboratory of Information Materials, School of Materials Science and Engineering, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
Researchers improved printable mesoscopic perovskite solar cells (p-MPSCs) using 2,5-furandicarboxylic acid (FDCA). This additive enhanced perovskite crystallization, boosting power conversion efficiency and long-term stability for scalable solar energy applications.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Printable mesoscopic perovskite solar cells (p-MPSCs) offer cost-effective and scalable solar energy solutions.
- The complex mesoscopic structure of p-MPSCs often leads to perovskite crystallization issues and defects, limiting performance.
Purpose of the Study:
- To investigate the use of 2,5-furandicarboxylic acid (FDCA) for regulating perovskite crystallization in p-MPSCs.
- To enhance the power conversion efficiency (PCE) and long-term stability of p-MPSCs.
Main Methods:
- Incorporation of multifunctional dicarboxylic acid molecule 2,5-furandicarboxylic acid (FDCA) into the perovskite layer.
- Analysis of FDCA's role in passivating undercoordinated Pb2+ and moderating perovskite crystallization.
- Fabrication and performance testing of FDCA-modified p-MPSCs.
Main Results:
- FDCA effectively passivated undercoordinated Pb2+ sites, suppressing nonradiative recombination.
- FDCA moderated perovskite crystallization, promoting dense film formation and high-quality growth.
- FDCA-modified p-MPSCs achieved a significantly improved PCE from 18.17% to 19.61%.
Conclusions:
- FDCA acts synergistically to enhance perovskite film quality and device performance.
- FDCA-modified p-MPSCs demonstrate excellent long-term stability, retaining over 90% PCE after 100 days in ambient air.
- FDCA is a promising additive for developing stable and efficient printable perovskite solar cells.
