Novel Benzodithiophene‐Based Polymer with Intramolecular Non‐Covalent Interactions as a Hole Transporting Layer for Perovskite Solar Cells
Abstract Conjugated polymers represent promising hole‐transport materials (HTM) used for the fabrication of efficient and stable perovskite solar cells (PSCs). Herein, a novel wide‐bandgap polymer Lira24 is designed based on Si( i ‐Pr) 3 ‐substituted benzodithiophene and bis(2‐ethylhexyloxy)benzene moieties. Alternation of selected building blocks in polymer backbone provides the formation of S∙∙∙O non‐covalent intramolecular interactions, which are beneficial for the planarization of polymer chains, better π‐conjugation and consequently improved charge transport. The developed polymeric HTM show enhanced hole mobility of 1.7×10 −3 cm 2 V −1 s −1 in respect to that of widely used PTAA, and well‐aligned energy of highest occupied molecular orbital (−5.39 eV) with valence band of MAPbI 3 absorber material. As a result, PSCs with Lira24 delivered an encouraging power conversion efficiency of 18.1% remarkably outperforming the efficiency of PTAA‐based control devices. The results of this work illustrate the importance of backbone structure control in the design of hole‐transport materials for efficient perovskite photovoltaics.
Authors
- Marina M. Tepliakova (ORCID: https://orcid.org/0000-0002-4043-6453)
- Sergei V. Karpov (ORCID: https://orcid.org/0000-0002-9569-3633)
- Aleksandra N. Zhivchikova (ORCID: https://orcid.org/0000-0001-8205-9257)
- A. A. Piryazev (ORCID: https://orcid.org/0000-0002-4782-1661)
- Dmitry A. Chernyayev (ORCID: https://orcid.org/0000-0002-2642-259X)
- Alexander V. Akkuratov (ORCID: https://orcid.org/0000-0001-8750-0048)
- Dimitri A. Ivanov (ORCID: https://orcid.org/0000-0002-5905-2652)
- E. D. Siaglova (ORCID: https://orcid.org/0009-0000-8883-4517)
- Mikhail D. Tereshchenko
- И. Е. Кузнецов
- N. G. Nikitenko
- D. A. Ivanenko
- O. I. Lashmanova
- A. V. Sklemina
- A. V. Skorlukhanova
- Mariia M. Agapitova (ORCID: https://orcid.org/0009-0001-1741-2031)
Institutions
- Skolkovo Institute of Science and Technology (RU)
- Lomonosov Moscow State University (RU)
- Belgorod State Technological University (RU)
- National Research Mordovia State University (RU)
- Perm National Research Polytechnic University (RU)
- Samara National Research University (RU)
- Sirius University of Science and Technology (RU)
- Institute of Problems of Chemical Physics (RU)
- Voronezh State University (RU)
Publication Details
- Journal
- Macromolecular Chemistry and Physics
- Published
- 2025-04-18
- DOI
- https://doi.org/10.1002/macp.202400489
- Citations
- 1
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Ministry of Science and Higher Education of the Russian Federation