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Asymmetric Modification of Carbazole Based Self‐Assembled Monolayers by Hybrid Strategy for Inverted Perovskite Solar Cells

Year: 2024
Type: article
Abstract: Carbazole-based self-assembled molecules (SAMs) are widely applied in inverted perovskite solar cells (iPSCs) due to their unique molecular properties. However, the symmetrical structure of the carbazole-based SAMs makes it difficult to finely regulate their performance, which impedes the further enhancement of the efficiency and stability of iPSCs. This work demonstrates that by constructing an asymmetric carbazole core, 9H-thieno[2',3' : 4,5]thieno[3,2-b]indole) (TTID), the key properties of SAM molecules can be effectively regulated. It has been confirmed that the hybrid thieno[2,3-b]thiophene unit of this asymmetric core governs the energy level, the surface wettability, and the defect passivation capability of the SAMs, while the substituent of core has a greater impact on the molecular dipole and device stability. The synergistic effects from thieno[2,3-b]thiophene and fluorine lead to the KF-derived iPSC demonstrating a certified power conversion efficiency (PCE) of 25.17 % and excellent operational stability. This hybrid design concept offers a promising approach for the further structural modification of SAMs in iPSCs.
DOI: 10.1002/anie.202416188
Authors: Youle Huang, Mingquan Tao, Yijing Zhang, Zhihui Wang, Zhe Sun, Wenfeng Zhang, Yonglian Xiong, Xueping Zong, Yang Wang, Mao Liang
Institutions: Tianjin University of Technology, Chinese Academy of Sciences, Institute of Chemistry, University of Chinese Academy of Sciences, Huai'an University, Southwest Petroleum University, Yancheng Institute of Technology
Language: English
Open Access status: bronze
Awards: G1044377911, G1392411204, G3116946982, G6622152397, G7805644099, G8176645022
OpenAlex ID: W4403146473
FWCI: 6.887
Cites: 57
Cited by: 67
Related to: 10