Molecular Design of Hole Transport Materials to Immobilize Ion Motion for Photostable Perovskite Solar Cells
Abstract Poor operational stability is a crucial factor limiting the further application of perovskite solar cells (PSCs). Organic semiconductor layers can be a powerful means for reinforcing interfaces and inhibiting ion migration. Herein, two hole‐transporting molecules, pDPA‐SFX and mDPA‐SFX, are synthesized with tuned substituent connection sites. The meta ‐substituted mDPA‐SFX results in a larger dipole moment, more ordered packing, and better charge mobility than pDPA‐SFX, accompanying with strong interface bonding on perovskite surfaces and suppressed ion motion as well. Importantly, mDPA‐SFX‐based PSCs exhibit an efficiency that has significantly increased from 22.5 % to 24.8 % and a module‐based efficiency of 19.26 % with an active area of 12.95 cm 2 . The corresponding cell retain 94.8 % of its initial efficiency at maximum power point tracking (MPPT) after 1,000 h ( T 95 =1,000 h). The MPPT T 80 lifetime is as long as 2,238 h. This work illustrates that a small degree of structural variation in organic compounds leaves considerable room for developing new HTMs for light stable PSCs.
Authors
- Feilin Zou
- Zheng Zhang (ORCID: https://orcid.org/0000-0003-2704-0355)
- Jianhang Qiu (ORCID: https://orcid.org/0000-0002-7029-1523)
- Kaicheng Zhang (ORCID: https://orcid.org/0000-0003-3468-3543)
- Tianyou Xie
- Chenghao Duan (ORCID: https://orcid.org/0000-0002-4609-3017)
- Keyou Yan (ORCID: https://orcid.org/0000-0003-4380-7325)
- Ligang Yuan (ORCID: https://orcid.org/0000-0001-6505-3232)
- Yao Wang (ORCID: https://orcid.org/0000-0003-4814-8285)
- Sijing Wang (ORCID: https://orcid.org/0000-0002-1933-003X)
- Ruijia Tang
- Kunpeng Guo (ORCID: https://orcid.org/0000-0003-3071-4429)
- Yang Luo (ORCID: https://orcid.org/0000-0003-4536-3457)
Institutions
- Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
- Shanghai Jiao Tong University (CN)
- Chinese Academy of Sciences (CN)
- Interface (United States) (US)
- Beijing University of Chemical Technology (CN)
- South China University of Technology (CN)
- Taiyuan University of Technology (CN)
Publication Details
- Journal
- Angewandte Chemie
- Published
- 2024-08-16
- DOI
- https://doi.org/10.1002/ange.202412042
- Citations
- 4
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.83
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Shanxi Province
- Foundation for Distinguished Young Talents in Higher Education of Guangdong
- National Key Research and Development Program of China
- Science and Technology Planning Project of Guangdong Province