MXene-Embedded PEDOT:PSS Hole-Transport Material for Lead-Free Perovskite Solar Cells
Improving the energy alignment between charge-transport layers and the perovskite is crucial for further enhancing the photovoltaic performance of tin-based perovskite solar cells (PSCs). Herein, the role of Ti<sub>3</sub>C<sub>2</sub>T <sub><i>x</i></sub> MXene in a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer (HTL) on the photovoltaic properties of PSCs is investigated as a function of its concentration. An improved perovskite film formation with reduced pinhole density and a more uniform contact potential difference is noted when MXene is embedded in the PEDOT:PSS HTL. The work function of the HTL is increased according to photoelectronic measurements, leading to a favorable energy alignment with the HOMO of PEA<sub>0.2</sub>FA<sub>0.8</sub>SnI<sub>3</sub> perovskite. PSCs fabricated using a MXene-embedded PEDOT:PSS HTL delivered a power conversion efficiency (PCE) of 8.35% compared to 7.35% from the pristine counterpart, while retaining ∼90% of its initial PCE after 450 h of storage in a N<sub>2</sub> atmosphere.
Authors
- Rajan Jose (ORCID: https://orcid.org/0000-0003-4540-321X)
- JinKiong Ling (ORCID: https://orcid.org/0000-0003-0923-0454)
- Azhar Fakharuddin (ORCID: https://orcid.org/0000-0001-5589-4265)
- Lukas Schmidt‐Mende (ORCID: https://orcid.org/0000-0001-6867-443X)
- E. Majková (ORCID: https://orcid.org/0000-0001-9597-9247)
- Muhammad Faraz Ud Din (ORCID: https://orcid.org/0000-0002-1591-5049)
- Daniele T. Cuzzupè (ORCID: https://orcid.org/0000-0001-6974-0566)
- Mária Omastová (ORCID: https://orcid.org/0000-0003-0210-5861)
- Anastasiia Stepura (ORCID: https://orcid.org/0000-0002-3234-2182)
- Tom Burgard (ORCID: https://orcid.org/0009-0001-7229-8075)
- Yekitwork Abebe Temitmie
Institutions
- Universiti Malaysia Pahang Al-Sultan Abdullah (MY)
- University of Konstanz (DE)
- Slovak Academy of Sciences (SK)
- Polymer Institute of the Slovak Academy of Sciences (SK)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Bahir Dar University (ET)
Publication Details
- Journal
- ACS Applied Energy Materials
- Published
- 2024-08-23
- DOI
- https://doi.org/10.1021/acsaem.3c02928
- Citations
- 9
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.88
Funders
- European Commission
- Bundesministerium für Bildung und Forschung
- Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg
- Agentúra na Podporu Výskumu a Vývoja
- HORIZON EUROPE Marie Sklodowska-Curie Actions