Chalcogenides : Photovoltaics and 2D (PV2D)

Coordinator : Wilfried DESRAT

^{Teaching Researchers (UM):}
DESRAT Wilfried
TIBERJ Antoine

^{Research Engineer:}
MORET Matthieu

Growth and physical characterization of chalcogenide materials.
Synthesis of standard CIGS photovoltaic cells by co-evaporation in three stages. Characterization of optical and electrical performances (IV, EQE) and imaging by electron microscopy.
Growth of CGS cells in one stage for indoor applications (2 eV gap, shunt resistance optimization).
Epitaxy of lamellar selenides (GaSe, InSe, In₂Se₃) and study of phase diagrams. Optical characterization (transmission, PL).
Growth of boron nitride by the metal flux method. Identification of boron nitride polytypes (hexagonal, rhombohedral, turbostratic) by X-ray diffraction.
Ab initio calculation of band diagrams and phonon dispersions of BN polytypes. Study of isotopic responses.