Synthesis and study of new organic and organometallic compounds with photovoltaic applications

Abdalhadi, Saifaldeen Muwafag (2017) Synthesis and study of new organic and organometallic compounds with photovoltaic applications. PhD thesis, University of Glasgow.

Abstract

This thesis describes the synthesis and characterisation of novel organic and organometallic materials with potential optoelectronic application. Chapter one provides a general introduction about the different types of solar cells and an overview of the working principle of two types of solar cells, DSSCs and BHJs, including examples of some molecular designs of the best performing dyes.
Chapter two describes the successful synthesis and characterization of two organometallic molecules based on the porphyrin moiety (PorTh and PorFu). These dyes were employed to fabricate DSSCs devices, reporting a power converting efficiency of 4.2% as the best result. The same chapter reports the synthesis and characterisation of another metalloporphyrin dye (EDOT Por), designed to be used as a sensitiser in DSSCs and synthesised by screening three types of one-pot C-H activation reaction protocols.
Chapter three describes the synthesis and characterization of four novel ferrocene derivatives which were designed using a donor-π-acceptor architecture for DSSCs. The main advantage of these compounds would be the easy two-step synthesis, starting from cheap starting materials.
The first part of chapter four describes the synthesis and characterization of a series of porphyrin derivatives containing a central transition metal ion (Zn (II), Pd (II), Ni (II) and Cu (II)), which were used as electron donor compounds in BHJs. The Zn-based porphyrin was chosen for photovoltaic device and blended with PC61BM, used as an acceptor, to give a power converting efficiency of 0.28%. The second part of this chapter describes the synthesis of a novel phthalocyanine derivative, which can be used as a donor unit in BHJs. Unfortunately, due to its very low solubility in most organic solvents, this compound could not be characterised.
Chapter five describes the synthesis and characterisation of a family of organic conjugated polymers and the small molecules based on thieno[3,4-b]pyrazine (TP) unit, to be used as donor materials in BHJs. All polymers exhibit low solubility in most common organic solvents. The small molecules, however, were tested in as donor materials BHJs, showing low VOC ranging between 0.4 and 0.6 V, with the most performing device exhibiting a PCE of 0.62%.
Chapter six describes the synthesis of new TTF derivatives designed to be used as a donor materials in BHJs. Different synthetic pathways were used to prepare these compounds, unfortunately it was not possible to synthesise the target materials.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Additional Information: Due to copyright restrictions the full text of this thesis cannot be made available online. Access to the printed version is available once any embargo periods have expired.
• Subjects: Q Science > QD Chemistry
• Colleges/Schools: College of Science and Engineering > School of Chemistry
• Supervisor's Name: Cooke, Prof. Graeme
• Date of Award: 2017
• Embargo Date: 29 August 2021
• Depositing User: Mr. SAIFALDEEN ABDALHADI
• Unique ID: glathesis:2017-8365
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 29 Aug 2017 13:36
• Last Modified: 31 Aug 2020 05:40
• URI: https://theses.gla.ac.uk/id/eprint/8365

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