Document Details

Document Type : Thesis 
Document Title :
ROOM AND NEAR ROOM TEMPERATURE THERMOELECTRIC NANOMATERIALSFOR RENEWABLE ENERGY APPLICATIONS
المواد النانیة الكهروحراریة عند وقرب درجة حرارة الغرفةلتطبیقات الطاقة المتجددة
 
Subject : Faculty of Science 
Document Language : Arabic 
Abstract : Sustainable energy is important for future development. Thermoelectric materials have been gaining the interests in numerous renewable energy research. While the improvement of conventional thermoelectric materials at room temperature (RT) and near RT remained relevant, these materials are expensive, and toxic which restricted their widely used in power generator applications. Therefore, there is a need to develop new thermoelectric materials that are cheap, and eco-friendly. Polypyrrole (PPy) polymer and copper iodide (CuI) as thermoelectric materials emerge as a promising class of materials but their efficiency is still low. The main objective of this research is to investigate PPy and CuI as thermoelectric materials with a view to improve their thermoelectric properties at RT and near RT. Firstly, Pure PPy was synthesized in the presence of methyl orange (MO) and the effect of using different MO concentrations on the structural and TE properties of PPy was studied in detail. The results showed significant improvement in the TE performance of perfect PPy nanotubes. Secondly, single wall carbon nanotubes (SWCNTs) were coated at different amounts of PPy using in situ polymerization method. The results revealed the uniform coating between PPy polymer chains and walls of the SWCNT provides significant enhancement in the TE performance of SWCNT/PPy nanocomposites. Additionally, pure and Tb-doped CuI single nanocrystals were synthesized by precipitation method in ethanol medium. The obtained results showed the optimized dopant concentration resulted in the maximum TE performance at RT due to the increase in the electrical conductivity and suppressed thermal conductivity. Finally, the CuI thin films were produced by the pulsed laser deposition (PLD) technique and then these films were annealed at three different temperatures ranging from 373-573 K in vacuum. The results showed that post-annealing played an important role in enhancing the TE performance below 373 K. 
Supervisor : Prof. Ahmed Salem Al-Shahry 
Thesis Type : Doctorate Thesis 
Publishing Year : 1445 AH
2023 AD 
Added Date : Monday, September 18, 2023 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد علي المسعوديAl-Masoudi, Mohammed AliResearcherDoctorate 

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