6-(4-Pyridyl)Azulene Derivatives as Hole Transport Materials for Perovskite Solar Cells DOI Open Access
Yuanqing Sun, Zhangyan Wang, Tianyu Geng

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(7), P. 1400 - 1400

Published: March 21, 2025

Azulene has been attracting much attention as a charge transfer material in organic electronics due to its inherent large dipole moment and small band gap, but application perovskite solar cells (PSCs) is very limited. Herein, azulene was applied the core acceptor for hole transport materials (HTMs), two molecules named Azu-Py-DF Azu-Py-OMeTPA were designed synthesized, which 4-pyridyl introduced on 6-position of 1,3-substituted adjust energy levels. The different spatial orientations pyridine improve solubility reduce crystallinity material, conducive creating thin film morphology. exhibited good electron mobility compared with standard Spiro-OMeTAD. Applied an HTM PSCs, Azu-Py-OMeTPA-based device achieved power conversion efficiency (PCE) 18.10%, higher than that unsubstituted counterpart. Nevertheless, anticipated passivation effect group diminished electron-deficient nature azulene’s seven-membered ring. These results demonstrate optimizing structure azulene-based HTMs can significantly alter molecular structure, formation properties, delocalization characteristics transport, lead improved performance, providing insights future design novel HTMs.

Language: Английский

6-(4-Pyridyl)Azulene Derivatives as Hole Transport Materials for Perovskite Solar Cells DOI Open Access
Yuanqing Sun, Zhangyan Wang, Tianyu Geng

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(7), P. 1400 - 1400

Published: March 21, 2025

Azulene has been attracting much attention as a charge transfer material in organic electronics due to its inherent large dipole moment and small band gap, but application perovskite solar cells (PSCs) is very limited. Herein, azulene was applied the core acceptor for hole transport materials (HTMs), two molecules named Azu-Py-DF Azu-Py-OMeTPA were designed synthesized, which 4-pyridyl introduced on 6-position of 1,3-substituted adjust energy levels. The different spatial orientations pyridine improve solubility reduce crystallinity material, conducive creating thin film morphology. exhibited good electron mobility compared with standard Spiro-OMeTAD. Applied an HTM PSCs, Azu-Py-OMeTPA-based device achieved power conversion efficiency (PCE) 18.10%, higher than that unsubstituted counterpart. Nevertheless, anticipated passivation effect group diminished electron-deficient nature azulene’s seven-membered ring. These results demonstrate optimizing structure azulene-based HTMs can significantly alter molecular structure, formation properties, delocalization characteristics transport, lead improved performance, providing insights future design novel HTMs.

Language: Английский

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