A Pyrrole Modified 3,4‐Propylenedioxythiophene Conjugated Polymer as Hole Transport Layer for Efficient and Stable Perovskite Solar Cells
Despite the outstanding electric properties and cost-effectiveness of poly(3,4-ethylenedioxythiophene) (PEDOT) and its derivatives, their performance as hole transport layer (HTL) materials in conventional perovskite solar cells (PSCs) has lagged behind that of widely used spirobifluorene-based molecules or poly(triaryl amine). This gap is mainly from their poor solubility and energy alignment mismatch. In this work, the design and synthesis of a pyrrole-modified HTL (PPr) based on 3,4-propylenedioxythiophene (ProDOT) are presented for efficient and stable PSCs. As a result of the superior defects passivation ability, excellent contact with perovskite, enhanced hole extraction, and high hydrophobicity, the unencapsulated PPr-based PSCs showed the peak PCE of 21.49% and outstanding moisture stability (over 4000 h). This work highlights the potential application of ProDOT-based materials as HTL for PSCs and underscores the importance of the rational design of PEDOT and its derivatives.
Authors
- Ashkan Abtahi (ORCID: https://orcid.org/0000-0002-9599-1745)
- Qixuan Hu (ORCID: https://orcid.org/0000-0003-2538-5261)
- H.Y.R. Atapattu (ORCID: https://orcid.org/0000-0002-4157-2174)
- Yoon Ho Lee (ORCID: https://orcid.org/0000-0003-1795-7872)
- Jiaonan Sun (ORCID: https://orcid.org/0000-0002-4102-0564)
- Jianguo Mei (ORCID: https://orcid.org/0000-0002-5743-2715)
- Aidan H. Coffey (ORCID: https://orcid.org/0000-0002-3803-4965)
- Ke Ma (ORCID: https://orcid.org/0000-0003-2168-0917)
- Yuanhao Tang (ORCID: https://orcid.org/0000-0002-4882-8195)
- Hanjun Yang (ORCID: https://orcid.org/0000-0002-6856-6559)
- Chenhui Zhu (ORCID: https://orcid.org/0000-0003-1263-5065)
- Kenneth R. Graham (ORCID: https://orcid.org/0000-0002-6387-3998)
- Letian Dou (ORCID: https://orcid.org/0000-0001-6411-8591)
- Wenhao Shao (ORCID: https://orcid.org/0000-0002-5237-0076)
- Limei Wang
- Wenzhan Xu (ORCID: https://orcid.org/0000-0002-1972-6392)
- R.K. Dani
- Mustafa H. Ahmed
Institutions
- University of Kentucky (US)
- Lawrence Berkeley National Laboratory (US)
- Shanghai Jiao Tong University (CN)
- Purdue University West Lafayette (US)
Publication Details
- Journal
- Small
- Published
- 2024-10-28
- DOI
- https://doi.org/10.1002/smll.202408440
- Citations
- 3
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.63
Funders
- U.S. Department of Energy
- Office of Energy Efficiency and Renewable Energy
- Solar Energy Technologies Office
- Office of Energy Efficiency