Enhanced Efficiency and Stability of Inverted Perovskite Solar Cells via Isomerization Engineering of Self‐Assembled Monolayers
Abstract
Abstract Carbazole‐based SAMs show great promise as interfacial modifiers in inverted perovskite solar cells (PSCs). Their large dipole moments and covalent binding capabilities suppress charge recombination and enhance device stability. We designed two isomeric carbazole SAMs (EPACz and PPACz) by adjusting the phenyl ring position. PPACz exhibits a higher dipole moment (2.60 D versus 1.77 D for EPACz) and a narrower HOMO‐LUMO gap (2.39 eV), enabling superior hole extraction. PPACz‐based devices achieved an excellent PCE of 26.1% (versus 22.0% for EPACz), with 23.5% efficiency for 1 cm 2 devices. The stronger tridentate anchoring of PPACz to ITO (compared with EPACz) improves interfacial stability. Unencapsulated devices retained over 90% of their initial efficiency after 540 h, demonstrating exceptional durability. This work provides key insights for designing high‐performance SAMs in perovskite photovoltaics.
Article Details
Authors (14)
Chao Lv
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Materials Science
Yawei Miao
College of Chemistry and Chemical Engineering Taishan University Taian 271000 P.R. China
Jing Wang
Hunan Cancer Hospital Changsha China
Jiayu Li
Zeyuan Hu
Yuexing Zhang
Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology, College of Chemistry and Chemical Engineering, Dezhou University 1 , Dezhou 253023,
Ping Wu
Department of Neurobiology, University of Texas Medical Branch
Longlong Geng
Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology, College of Chemistry and Chemical Engineering
Ying Li
Xiangchuan Meng
Film Energy Chemistry for Jiangxi Provincial Key Laboratory Institute of Polymers and Energy Chemistry School of Physics and Materials Science Nanchang University 999 Xuefu Avenue Nanchang 330031 P.R. China
Fariba Tajabadi
Department of Nanotechnology and Advanced Materials Materials and Energy Research Center Karaj 31787‐316 Iran
Nima Taghavinia
Department of Physics Sharif University of Technology Tehran 14588 Iran
Ke Gao
State Key Laboratory of Bioactive Substance and Function of Natural Medicines, CAMS Key Laboratory of Enzyme and Biocatalysis of Natural Drugs, and NHC Key Laboratory of Biosynthesis of Natural Products
Qifan Xue