期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 10, 期 3, 页码 1150-1178出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta10388a
关键词
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资金
- National Natural Science Foundation of China [21905136]
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
This review discusses recent advances in undoped hole transport materials (HTMs) for perovskite solar cells, proposes design strategies for improving the performance of PVSCs, and examines the correlation between molecular structures and device performance and stability. The development of dopant-free small organic HTMs is considered a promising approach for achieving efficient and stable PVSCs towards commercialization.
The overwhelming improvement in performance and the cost-effective solution processing enable perovskite solar cells (PVSCs) as a promising technology in the photovoltaic industry. Doped hole transport material (HTM)-based high-efficient PVSCs are facing challenges from device cost, stability, and scale-up fabrication. The development of highly-efficient dopant-free HTMs evolves as an effective approach to realize high-performance and stable PVSCs. In this review, we update herein the recent advances in the molecular design of undoped HTMs from the viewpoint of perovskite defects passivation and enhancing the PVSCs performance. Rational design strategies are proposed on the basis of constructing the interfacial interactions with perovskite layers. Taking successful HTMs as examples, we elaborate the design principles of dopant-free HTMs for highly-efficient and stable PVSCs. The correlation study between molecular structures and device performance and long-term stability of PVSCs is presented. Finally, a perspective on the development of dopant-free small organic HTMs is given for efficient and stable PVSCs toward their commercialization.
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