General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-24-0613
Thesis topic details
Category
Technological challenges
Thesis topics
Stabilisation of Perovskite photovoltaic devices by passivation with Metal-Organic Frameworks type materials
Contract
Thèse
Job description
MOFs are a type of porous organic-inorganic hybrid material with interesting properties in terms of the passivation of defects in the perovskite and its stability, particularly versus light. For example:
- Direct effect of MOF components as passivation agents: Metal ions and organic ligands can passivate defects at the MOF/PK interface.
- Downconversion of incident radiation: Certain metals (such as europium) or ligands (with aromatic groups) can absorb high-energy radiation (typically violet/near-UV), then re-emit this energy in the form of lower-energy radiation or transmit it directly in a non-radiative manner to the perovskite by Förster resonance (or FRET). This protects the perovskite from high-energy photons, and therefore a priori improves light stability, with little energy loss.
The thesis work will focus on
- integrating MOFs into the perovskite layer, either as a surface treatment or as a mixture of suspensions
- Materials studies (in particular advanced studies using XPS and UPS)
- Favrication of single-junction devices and then tandem devices with silicon sub-cells
- Study of lifetime under illumination (continuous, cycling) with associated characterisations (electrical measurements, photoluminescence, etc.).
University / doctoral school
Ingénierie - Matériaux - Environnement - Energétique - Procédés - Production (IMEP2)
Université Grenoble Alpes
Thesis topic location
Site
Grenoble
Requester
Position start date
01/01/2024
Person to be contacted by the applicant
CROS Stéphane stephane.cros@cea.fr
CEA
DRT/LITEN/DTS/SCPV/LCT
CEA-Liten, INES
50 av du Lac Léman
73377 LE BOURGET DU LAC
(33) 479 79 22 58
Tutor / Responsible thesis director
CROS Stéphane stephane.cros@cea.fr
CEA
DRT/LITEN/DTS/SCPV/LCT
CEA-Liten, INES
50 av du Lac Léman
73377 LE BOURGET DU LAC
(33) 479 79 22 58
En savoir plus
https://orcid.org/0000-0003-0402-5582
https://liten.cea.fr/cea-tech/liten/Pages/Axes-de-recherche/Production-energie-renouvelable/Photovoltaique-a-Haut-Rendement.aspx
https://www.linkedin.com/in/st%C3%A9phane-cros-86b25952/