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Thesis defence by Abderrahime SEKKAT

Published on November 25, 2021
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PhD Defense December 17, 2021
10:30 am - Amphi Z 108, Building Z, 1st floor 
Grenoble INP Phelma-Minatec
Grenoble INP - Phelma
3 parvis Louis Néel - 38000 Grenoble
Accès : TRAM B arrêt Cité internationale
Free entrance - No registration

Atmospheric-Pressure Spatial Atomic Layer Deposition of Cu2O and Functional Thin Films for Photovoltaic Applications

Abderrahime SEKKAT

Abderrahime SEKKAT


Keywords:


Functional Thin Films, Photovoltaic, Spatial Atomic Layer Deposition


cliquer pour voir la liste des membres du jury/clic here for the jury members


 

Abstract


Copper-based thin films are a hot topic in the materials science community due to the abundance of copper, its non-toxicity, and the many different applications it can find. In this thesis, we first focused on the development and study of thin films of Cu2O with an innovative and scalable approach known as atmospheric pressure spatial atomic layer deposition (AP-SALD), which allows deposition at low temperatures, high throughput, and open-air atmosphere. We have optimized the deposition of Cu2O thin films by AP-SALD using a thermally-stable precursor, namely, Cu(hfac)(COD) that has never been used to deposit Cu2O by any ALD and/or CVD method. As the second part of this work, we have studied the effect of inducing an oxygen fraction during the deposition of Cu2O thin films and found out a record resistivity value obtained with respect to other growth techniques and positron annihilation lifetime spectroscopy (PALS) and doppler broadening variable energy positron annihilation spectroscopy (DB-VEPAS) were performed to probe the formed defects in the film. The integration of the optimized Cu2O thin films to semi-transparent solar cells has been studied since the optimized films were combined with ZnO thin films also grown by SALD. The obtained results have been allied with an in-depth simulation study based on the SCAPS software. Similarly, the Cu2O thin film has been integrated as a hole transport layer (HTLs) for large-area silicon heterojunction solar cells (SHJ) within the framework of a collaboration with The National Institute of Solar Energy (INES) in France. Finally, this study reports the ability to control the three main phases of Cu-based films from metallic to oxidized phases by altering only the coreactant during the AP-SALD deposition.


Membres du jury/ Jury members :
 

Prof

A.DEVI

Ruhr-University, Bochum, (Germany)

Rapporteure

Dr.

P.ROCA I CABARROCAS

Institut Photovoltaïque Ile de France (IPVF),(France)

Rapporteur

Dr.

E.BLANQUET

Laboratoire de Science et Ingénieur des Matériaux et Procédés (France)

Présidente

Dr.

R.HOYE

Imperial College London, (United Kingdom)

Examinateur

Prof.

M.MORALES-MASIS

Twente (Netherlands)

Examinatrice

Dr.

D. MUÑOZ-ROJAS

Laboratoire des Matériaux et du Génie Physique

Thesis Director

Prof.

A. KAMINSKI-CACHOPO

Institut de Microélectronique Electromagnétisme et Photonique et le LAboratoire d'Hyperfréquences et de Caractérisation

Invited

Dr.

G.CHICHIGNOUD

Laboratoire de Science et Ingénieur des Matériaux et Procédés

Invited


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Date of update January 26, 2022

Université Grenoble Alpes