BrainMap

Mohamed Yassine Zaki

assistant researcher - INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Researcher

Expertise & keywords

Efficiency enhancement of thin films solar cells via CdS replacement and CZTSSe layer engineering. Call name: P 1 - SP 1.1 - Proiecte de cercetare Postdoctorală - PD-2021
PN-III-P1-1.1-PD-2021-0240 2022 - 2024

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation:

Project website: https://infim.ro/en/project/eecsc-23/

Abstract:

Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) based solar cells have attracted a lot of interest lately due to their promising potential and similar properties to the better known Cu(In,Ga)Se2 (CIGS) and CdTe photovoltaic devices. However, these materials suffer from the omnipresence of several secondary phases that influence their performances. The champion device has a 12.6% power conversion efficiency, which is still much lower than its counterpart CIGS. The objective of this project is the enhancement of the efficiency of CZTSSe thin films solar cells via PN junction layers engineering. The CZTSSe p-type absorber layers will be deposited using a two-steps magnetron sputtering deposition followed by a sulfurization/selenization in order to avoid the secondary phases and obtain stoichiometric films. Cadmium sulfide (CdS) is commonly used as a n-type layer for kesterite solar cells, but owing to Cd toxicity, ZnS or ZnSe materials are proposed here. Tuning the band alignment at the interface between the p-type and n-type layers will be done by varying the thickness and band gap of the buffer layer in order to achieve high efficiency CZTSSe solar cells. The findings of this project will be useful to understand the relation between the synthesis conditions, composition and the formation of secondary phases. This will guide the design of new ecological solar cells with an improved efficiency that can reach the commercial panels requirements.

Science and Engineering of Kesterites for the Next Generation of Solar Cells Call name: P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-0827 2021 - 2023

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation:

Project website: https://infim.ro/en/project/kestercell-2/

Abstract:

The project aims to develop by concentration engineering Cu2ZnSn(Ge)S(Se) thin films using a novel simultaneous co-deposition using magnetron sputtering from 3 up to 6 different targets, revealing original scientific insights regarding the structural, optical and electrical properties of kesterites and the photovoltaic characteristics of corresponding solar cells in correlation with composition, and producing by interface engineering (front and contact innovations) new solar cells with efficiency near or above the present world record.

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects