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Feasibility of Perovskite Solar Cells for Space Applications / DECLAN HUGHES

Swansea University Author: DECLAN HUGHES

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DOI (Published version): 10.23889/SUthesis.63570

Abstract

Environmental stability remains as a critical barrier for the adoption of perovskite solar cells for space applications and understanding the roles of material degradation is the key to address this challenge. The thesis investigates the stability of established perovskite solar cell architectures u...

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Published: Swansea, Wales, UK 2023
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
Supervisor: Tsoi, Wing Chung. and Watson, Trystan.
URI: https://cronfa.swan.ac.uk/Record/cronfa63570
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first_indexed 2023-06-02T10:02:03Z
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spelling v2 63570 2023-06-02 Feasibility of Perovskite Solar Cells for Space Applications f68e7c52a6da2e577e9ff2c473b10499 DECLAN HUGHES DECLAN HUGHES true false 2023-06-02 Environmental stability remains as a critical barrier for the adoption of perovskite solar cells for space applications and understanding the roles of material degradation is the key to address this challenge. The thesis investigates the stability of established perovskite solar cell architectures under mimic Low Earth Orbit (LEO) conditions.Perovskite solar cells (PSCs) were found to have an impressive radiation hardness under 150 keV proton bombardment. At higher proton fluences, the performance degradation was found to correlate to the decrease in short circuit current density (Jsc). The decrease was found to be related to the degradation of the spiro-OMeTAD hole transporting layer (HTL). In mesoporous carbon-based PSCs, the proton radiation stability was found to be the highest seen under 150 keV proton bombardment. This stability was related to the thick carbon electrode.Thermal cycling measurements revealed that the spiro-OMeTAD HTL was responsible for decreasing device performance. Raman spectroscopy exhibited a decrease in the C-C and C=C bond peak intensities, related to the degradation of the layer. This correlates to an increase in non-radiative recombination and reduced Jsc. The same measurements on a P3HT HTL showed much greater thermal stability, with improved device performance retention after heat treatment and thermal cycling.A new thin-film encapsulation technique was also explored. Using spray coated Poly(methyl methacrylate) (PMMA), thermal and humidity stability measurements showed comparable performance to glass encapsulation. Photoluminescence (PL) measurements showed a large red-shift as a function of moisture ingress into the PSCs, and this was shown to correlate to an increase in Jsc and device performance.The work presented in this thesis establishes relationships between the choice of HTL and encapsulation technique with material/device stability under mimic LEO conditions. Namely how the choice in HTL can lead to reduced proton bombardment or thermal stability, and how the encapsulation method can have an adverse effect on device performance. These are crucial for addressing the feasibility of future PSCs under mimic LEO conditions, thereby paving the way toward achieving long-term stability of PSCs for space applications. E-Thesis Swansea, Wales, UK Aerospace, Photovoltaics, Raman, Proton Bombardment, Perovskite, Temperature, Encapsulation, Optoelectronic, PMMA, Low Earth Orbit 12 5 2023 2023-05-12 10.23889/SUthesis.63570 COLLEGE NANME COLLEGE CODE Swansea University Tsoi, Wing Chung. and Watson, Trystan. Doctoral Ph.D Airbus (Endeavr Wales), EPSRC 2023-09-29T10:19:33.8805245 2023-06-02T10:47:31.1952264 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering DECLAN HUGHES 1 Under embargo Under embargo 2023-06-02T11:00:43.2889030 Output 7851789 application/pdf E-Thesis – open access true 2024-05-12T00:00:00.0000000 Copyright: The Author, Declan P. G. Hughes, 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 Feasibility of Perovskite Solar Cells for Space Applications
spellingShingle Feasibility of Perovskite Solar Cells for Space Applications
DECLAN HUGHES
title_short Feasibility of Perovskite Solar Cells for Space Applications
title_full Feasibility of Perovskite Solar Cells for Space Applications
title_fullStr Feasibility of Perovskite Solar Cells for Space Applications
title_full_unstemmed Feasibility of Perovskite Solar Cells for Space Applications
title_sort Feasibility of Perovskite Solar Cells for Space Applications
author_id_str_mv f68e7c52a6da2e577e9ff2c473b10499
author_id_fullname_str_mv f68e7c52a6da2e577e9ff2c473b10499_***_DECLAN HUGHES
author DECLAN HUGHES
author2 DECLAN HUGHES
format E-Thesis
publishDate 2023
institution Swansea University
doi_str_mv 10.23889/SUthesis.63570
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 0
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description Environmental stability remains as a critical barrier for the adoption of perovskite solar cells for space applications and understanding the roles of material degradation is the key to address this challenge. The thesis investigates the stability of established perovskite solar cell architectures under mimic Low Earth Orbit (LEO) conditions.Perovskite solar cells (PSCs) were found to have an impressive radiation hardness under 150 keV proton bombardment. At higher proton fluences, the performance degradation was found to correlate to the decrease in short circuit current density (Jsc). The decrease was found to be related to the degradation of the spiro-OMeTAD hole transporting layer (HTL). In mesoporous carbon-based PSCs, the proton radiation stability was found to be the highest seen under 150 keV proton bombardment. This stability was related to the thick carbon electrode.Thermal cycling measurements revealed that the spiro-OMeTAD HTL was responsible for decreasing device performance. Raman spectroscopy exhibited a decrease in the C-C and C=C bond peak intensities, related to the degradation of the layer. This correlates to an increase in non-radiative recombination and reduced Jsc. The same measurements on a P3HT HTL showed much greater thermal stability, with improved device performance retention after heat treatment and thermal cycling.A new thin-film encapsulation technique was also explored. Using spray coated Poly(methyl methacrylate) (PMMA), thermal and humidity stability measurements showed comparable performance to glass encapsulation. Photoluminescence (PL) measurements showed a large red-shift as a function of moisture ingress into the PSCs, and this was shown to correlate to an increase in Jsc and device performance.The work presented in this thesis establishes relationships between the choice of HTL and encapsulation technique with material/device stability under mimic LEO conditions. Namely how the choice in HTL can lead to reduced proton bombardment or thermal stability, and how the encapsulation method can have an adverse effect on device performance. These are crucial for addressing the feasibility of future PSCs under mimic LEO conditions, thereby paving the way toward achieving long-term stability of PSCs for space applications.
published_date 2023-05-12T10:19:35Z
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score 11.014067

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