Zhengjie Xu, Jianing Wang, Qiang Lou, Yufeng Jin, Hong Meng, Hang Zhou
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引用次数: 0
Abstract
Poly(3-hexylthiophene) (P3HT) has attracted significant interest due to its cost-effective synthesis, high purity, and stable film properties. However, the efficiency of perovskite solar cells is limited by energy-level mismatches and nonradiative recombination at the P3HT/perovskite interface. In this study, we introduce the 2,7-dimetapyridinebenzo[4,5]thieno[3,2-b]benzofuran (Mpy-BTBF) small molecule, which features extended π-conjugation and lone pair electrons from oxygen and sulfur atoms. Incorporating Mpy-BTBF into P3HT (M-P3HT) improves charge transport and passivates iodine-related defects, achieving a power conversion efficiency (PCE) of 16.36%, surpassing the pristine P3HT-based device (14.49%). With further Li salts doping, the champion PCE increased to 21.24 from 17.30%. Finally, M-P3HT-based devices maintained over 70% of their efficiency after 600 h of aging at 60% relative humidity and 60°C.
Solar RRLPhysics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
12.10
自引率
6.30%
发文量
460
期刊介绍：
Solar RRL, formerly known as Rapid Research Letters, has evolved to embrace a broader and more encompassing format. We publish Research Articles and Reviews covering all facets of solar energy conversion. This includes, but is not limited to, photovoltaics and solar cells (both established and emerging systems), as well as the development, characterization, and optimization of materials and devices. Additionally, we cover topics such as photovoltaic modules and systems, their installation and deployment, photocatalysis, solar fuels, photothermal and photoelectrochemical solar energy conversion, energy distribution, grid issues, and other relevant aspects. Join us in exploring the latest advancements in solar energy conversion research.
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