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Lookup NU author(s): Dr Amy NeildORCiD, Dr Owen Woodford, Professor Elizabeth GibsonORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
This journal is © The Royal Society of Chemistry, 2026This paper reports the first use of an amide-based hole transport material in a solid-state dye-sensitised solar cell. A substantial improvement in solar cell efficiency from 0.04 to 2.26% was achieved through prolonged oxidation in air and light soaking for the amide-based hole-transporting mediator, TPABT. Time-resolved spectroscopic studies show that the oxidation state and additive concentration alter the charge-transfer and regeneration kinetics, which are consistent with the time-dependent changes in device properties. Our study shows that, if the oxidation state and doping are carefully controlled, TPABT-based hole transport materials could serve as a viable, cost-effective alternative to Spiro-OMeTAD, the conventional yet expensive hole-transporting material widely used in emerging photovoltaics.
Author(s): Neild A, Woodford O, Docampo P, Gibson EA
Publication type: Article
Publication status: Published
Journal: RSC Advances
Year: 2026
Volume: 16
Issue: 13
Pages: 11988-11997
Online publication date: 02/03/2026
Acceptance date: 16/02/2026
Date deposited: 16/03/2026
ISSN (electronic): 2046-2069
Publisher: Royal Society of Chemistry
URL: https://doi.org/10.1039/D5RA09351A
DOI: 10.1039/d5ra09351a
Data Access Statement: Data supporting the findings of this study, including processed photovoltaic performance data and spectroscopic kinetic data, are available from the corresponding author upon reasonable request. Rawdevice andspectroscopic datasetsare archived and are available through our secure, open access repository (data.ncl.ac.uk).DOI https://doi.org/10.25405/data.ncl.30788537
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