Mrig, Shreya;
(2023)
Design, Synthesis and Solution Studies of Aluminium Precursors for Deposition of Conductive Patterns.
Doctoral thesis (Ph.D), UCL (University College London).
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Abstract
This work has been carried out in two parts. The first part focuses on the design, synthesis, and isolation of novel aluminium metal-organic decomposition precursors to assess their suitability towards low temperature decomposition to zerovalent aluminium. Emphasis has been placed on elucidating the relationship between the molecular structure of the precursor and its decomposition temperature. The second part is concerned with the spray coating of dimethylethylamine alane to test the propriety of this deposition technique towards obtaining conductive aluminium films. The work is put into context with a broad introduction in Chapter 1, followed by experimental details in Chapter 2. Chapter 3 explores the design and synthesis of novel tris(thioureide) aluminium(III) compounds that exist in octahedral geometry while Chapter 4 describes penta-coordinate bis(thioureide) alkyl aluminium(III) compounds. Thiourea ligands have been utilised with the steric bulk on these varied systematically to evaluate the effect the ligand steric bulk has on the decomposition temperatures of these compounds. The thermal decomposition profiles of these compounds have been assessed via thermal gravimetric analysis and tandem mass spectrometry has been used to look at how these molecules fragment upon collision with nitrogen molecules when heated up to 200 °C. The correlation between the structure of these compounds and their consequent decomposition temperatures has been assessed. The impact of moving from metal-organic compounds to organometallic compounds on the decomposition temperatures has also been evaluated. Chapter 5 is focused on obtaining conductive films of aluminium using dimethylethylamine alane as the precursor and employing the spray-coating deposition technique. Initial studies focused on the deposition of aluminium films onto a variety of substrates. Subsequently, these results were optimised to obtain conductive circuit patterns of aluminium via spray coating for use in solar cells.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Ph.D |
| Title: | Design, Synthesis and Solution Studies of Aluminium Precursors for Deposition of Conductive Patterns |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| Additional information: | Copyright © The Author 2023. Original content in this thesis is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Licence (https://creativecommons.org/licenses/by-nc/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 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-pp.ucl.ac.uk/id/eprint/10170740 |
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