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research-article

Theoretical adjustment of necessary conditions for enhancing figure of merit of thin thermoelectric layers

[+] Author and Article Information
Taher GHRIB

Laboratory of Physical Alloys (LPA), college of science, university of Dammam, Saudi ArabiaLaboratoire Photovoltaïque, Centre de Recherches et des Technologies de l'Energie Technopole borj cedria, hammam lif, Tunisie
taher.ghrib@yahoo.fr

Munirah ABDULLAH ALMESSIERE

Laboratory of Physical Alloys (LPA), college of science, university of Dammam, Saudi Arabia
malmessiere@uod.edu.sa

Amal LAFY Al-OTAIBI

Laboratory of Physical Alloys (LPA), college of science, university of Dammam, Saudi Arabia
amalotiaibi@uod.edu.sa

Sami BRINI

Laboratory of Physical Alloys (LPA), college of science, university of Dammam, Saudi Arabia
ssbrini@uod.edu.sa

Radhouane CHTOUROU

Laboratoire Photovoltaïque, Centre de Recherches et des Technologies de l'Energie Technopole borj cedria, hammam lif, Tunisie
radhouane.chtourou@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4036039 History: Received August 19, 2015; Revised February 15, 2017

Abstract

This work present a simple thinking based on material's electrical and thermal properties which permit to searchers in domain of manufacturing and characterization of thin and thick films in solid state to take appropriate experimental conditions before the execution. Treatment of heat equations based on the photothermal deflection (PTD) technique, using some approximations founded on the determination of the thermal conductivity and thermal diffusivity and the calculation of the thermal diffusion length and comparing it with thicknesses of the substrate and the film deposited on it which constitute the sample and using the Cahill's law; we arrive to highlight, necessary conditions that allow searchers to manufacture samples with high thermoelectric power. These conditions are based on the experimental objectives that aspire many modern researches such as materials with low thermal conductivity and high electrical conductivity and the relationship between them to obtain materials with high figure of merit.

Copyright (c) 2017 by ASME
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