Fused-ring isomerization dopant-free hole transport materials for high-performance inorganic perovskite solar cells
We synthesized two linear dopant-free hole transport materials (HTMs), denoted as NT and iNT, by coupling methoxytriphenylamine donor unit with either naphtho[1,2-<i>c</i>:5,6-<i>c</i>']bis[1,2,5]thiadiazole or its isomeric counterparts naphtho[1,2-<i>d</i>:5,6-<i>d</i>']bis([1,2,3]thiadiazole) as acceptor units. The fused-ring isomerization structure of iNT endows it with a substantial dipole moment and well-aligned energy levels, which are highly favorable for efficient free-charge extraction. Compared to devices based on NT, CsPbI<sub>3</sub> inorganic perovskite solar cells (IPSCs) employing iNT exhibited significantly enhanced performance, achieving a power conversion efficiency (PCE) of 18.09%. Furthermore, the unencapsulated iNT-based devices demonstrated excellent operational stability.
Authors
- Changhua Li (ORCID: https://orcid.org/0000-0003-4688-7551)
- Guilong Cai (ORCID: https://orcid.org/0000-0001-9924-1362)
- Chenghao Duan (ORCID: https://orcid.org/0000-0002-4609-3017)
- Hongfei Liu (ORCID: https://orcid.org/0000-0003-4795-1113)
- Yingyue Cui
- Tianyi Zhang (ORCID: https://orcid.org/0000-0003-3160-9495)
- Tao Jia (ORCID: https://orcid.org/0000-0003-4899-0982)
- gao yalin (ORCID: https://orcid.org/0009-0007-9531-2160)
Institutions
- South China Normal University (CN)
- Henan University of Technology (CN)
- Dalian University (CN)
- Guangdong Polytechnic Normal University (CN)
- Institute of Process Engineering (CN)
- Zhengzhou Institute of Emerging Industrial Technology (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc04164c
- Citations
- 1
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.73