Leung, Wei Winnie;
(2020)
Synthesis and characterisation of Group 15-containing inorganic solids for energy conversion applications.
Doctoral thesis (Ph.D), UCL (University College London).
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Abstract
The increasing demand for and awareness of sustainable energy resources has encouraged the search for new materials in energy conversion applications, in particular, solar absorber materials, transparent-conducting oxides and thermoelectrics. The primary requirements for these novel materials are high earth-abundancy, non-toxicity, low cost and suitable adaptability in their respective applications. In this thesis, novel metal oxide and sulphide materials will be explored through various experimental characterisation techniques such as X-ray diffraction, X-ray photoelectron spectroscopy, ultraviolet-visible light spectroscopy and energy dispersive spectroscopy to investigate their structural and physical properties. These metal oxide materials are novel in their application fields, which include sodium antimony sulphide NaSbS₂, barium bismuth oxide BaBi₂O₆, gallium antimony oxide GaSbO₄, ZnSb₂O₆ and various trivalent metal ion doped ZnSb₂O₆. Experimental results will be discussed in conjunction with theoretical data obtained by Scanlon Materials Theory Group, and analysed to provide a detailed breakdown on the suitability of these metal oxide materials in becoming potential materials in their own fields. Furthermore, the cation ordering of GaSbO₄ and various metal-ion doped ZnSb₂O₆ will be investigated through the changes in their structural and electronic properties in order to understand the doping mechanism and the role of dopant in these doped materials. These GaSbO₄ doped ZnSb₂O₆ materials are potential candidates for transparent-conducting oxide and thermoelectric applications.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Ph.D |
| Title: | Synthesis and characterisation of Group 15-containing inorganic solids for energy conversion applications |
| Event: | UCL (University College London) |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| Additional information: | Copyright © The Author 2020. Original content in this thesis is licensed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) Licence (https://creativecommons.org/licenses/by/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author’s request. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10116325 |
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