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Photochemical Characterisation of Perovskites to Inform Stability and Sustainability / ALEXANDER DOOLIN

Swansea University Author: ALEXANDER DOOLIN

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DOI (Published version): 10.23889/SUThesis.69264

Abstract

This thesis utilises photochemical characterisation techniques, along with morphological measurements, to study perovskite thin films deposited from a range of alternative solvent systems and anti-solvent combinations. This work aims to enlighten the process of judicious solvent selection with a vie...

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Published: Swansea University, Wales, UK 2025
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
Supervisor: Davies, M. L., and Carnie, M.
URI: https://cronfa.swan.ac.uk/Record/cronfa69264
first_indexed 2025-04-10T13:08:59Z
last_indexed 2025-04-11T05:22:36Z
id cronfa69264
recordtype RisThesis
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spelling 2025-04-10T14:11:24.4109073 v2 69264 2025-04-10 Photochemical Characterisation of Perovskites to Inform Stability and Sustainability 1737d5447ed2d0af99c4bfee0d2717f9 ALEXANDER DOOLIN ALEXANDER DOOLIN true false 2025-04-10 This thesis utilises photochemical characterisation techniques, along with morphological measurements, to study perovskite thin films deposited from a range of alternative solvent systems and anti-solvent combinations. This work aims to enlighten the process of judicious solvent selection with a view to improving the stability of the rapidly evolving perovskite technology whilst simultaneously considering the ‘green’ credentials of the chemicals used. Through increased understanding of solvent contribution towards film properties, it is possible to reduce the environmental and health and safety burden of new emerging materials and shed light on the interplay between crystallisation kinetics and intrinsic film stability.Chapter 1 aims to provide a review of literature serving as a backdrop for the analysis considered within this thesis. Solvent parameters and their respective impact on film photoluminescence, morphology, and the stability of theprecursor solution are considered within this chapter. The development of a ‘green’ solvent toolkit, proposing multiple new chemicals for use within perovskite development is a crucial aim of this work.The following Chapter 2 focusses on the optimisation of experimental MAPbI3 perovskite precursor solutions. The goal here was to utilise a novel solvent formulation to achieve power conversion efficiencies comparable to that of the best performing solvents.Chapter 3 aims to improve the shelf life of the precursor through the introduction of novel anhydrous ‘green’ solvent additives – dimethyl carbonate. The long-term stability of MAPbI3 films and devices was considered within this chapter with a view to increasing sample stability through solvent parameter manipulation.Finally, Chapter 4 moves towards inherently more stable perovskite compositions – triple cation perovskite. The newly developed solvent systems and anti-solvent were trialled against this more complex composition. Devices with significant PCE% retention were evaluated over a 7-month period highlighting the potential for engineered planar perovskite architecture as the research field progresses. E-Thesis Swansea University, Wales, UK Perovskites, Photochemistry, Sustainable Solvents 10 2 2025 2025-02-10 10.23889/SUThesis.69264 COLLEGE NANME COLLEGE CODE Swansea University Davies, M. L., and Carnie, M. Doctoral Ph.D EPSRC, FSE EPSRC, FSE 2025-04-10T14:11:24.4109073 2025-04-10T13:58:57.0786645 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering ALEXANDER DOOLIN 1 69264__33999__0c73551c60cb49098040ad79c8bf045c.pdf 2023_Doolin_A.final.69264.pdf 2025-04-10T14:03:59.7007851 Output 25727977 application/pdf E-Thesis – open access true Copyright: The Author, Alexander James Doolin, 2023 Distributed under the terms of a Creative Commons Attribution 4.0 License (CC BY 4.0). true eng https://creativecommons.org/licenses/by/4.0/
title Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
spellingShingle Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
ALEXANDER DOOLIN
title_short Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
title_full Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
title_fullStr Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
title_full_unstemmed Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
title_sort Photochemical Characterisation of Perovskites to Inform Stability and Sustainability
author_id_str_mv 1737d5447ed2d0af99c4bfee0d2717f9
author_id_fullname_str_mv 1737d5447ed2d0af99c4bfee0d2717f9_***_ALEXANDER DOOLIN
author ALEXANDER DOOLIN
author2 ALEXANDER DOOLIN
format E-Thesis
publishDate 2025
institution Swansea University
doi_str_mv 10.23889/SUThesis.69264
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description This thesis utilises photochemical characterisation techniques, along with morphological measurements, to study perovskite thin films deposited from a range of alternative solvent systems and anti-solvent combinations. This work aims to enlighten the process of judicious solvent selection with a view to improving the stability of the rapidly evolving perovskite technology whilst simultaneously considering the ‘green’ credentials of the chemicals used. Through increased understanding of solvent contribution towards film properties, it is possible to reduce the environmental and health and safety burden of new emerging materials and shed light on the interplay between crystallisation kinetics and intrinsic film stability.Chapter 1 aims to provide a review of literature serving as a backdrop for the analysis considered within this thesis. Solvent parameters and their respective impact on film photoluminescence, morphology, and the stability of theprecursor solution are considered within this chapter. The development of a ‘green’ solvent toolkit, proposing multiple new chemicals for use within perovskite development is a crucial aim of this work.The following Chapter 2 focusses on the optimisation of experimental MAPbI3 perovskite precursor solutions. The goal here was to utilise a novel solvent formulation to achieve power conversion efficiencies comparable to that of the best performing solvents.Chapter 3 aims to improve the shelf life of the precursor through the introduction of novel anhydrous ‘green’ solvent additives – dimethyl carbonate. The long-term stability of MAPbI3 films and devices was considered within this chapter with a view to increasing sample stability through solvent parameter manipulation.Finally, Chapter 4 moves towards inherently more stable perovskite compositions – triple cation perovskite. The newly developed solvent systems and anti-solvent were trialled against this more complex composition. Devices with significant PCE% retention were evaluated over a 7-month period highlighting the potential for engineered planar perovskite architecture as the research field progresses.
published_date 2025-02-10T05:27:43Z
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score 11.444473

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