FREN
courbe en fond

Anciens du laboratoire



Descriptif des activités de recherche

Humidity and temperature Stability enhancement of hybrid organic/inorganic perovskite solar cells (PEROVSTAB)
The field of Perovskite Solar Cell (PSC) is unprecedented. After only 7 years research, PSCs today achieved 25.2 % power conversion efficiency which makes it a desirable solar cell technology. The objective of PEROVSTAB is to promote a new breakthrough in improving the stability of hybrid halide perovskite solar cells. The photophysical properties and dynamic of photo-induced charge transfer processes of all noval materials will be assessed by a complete characterization toolbox composed of s down to ms time scale Intensity Modulated photoVoltage and Photocurrent spectroscopies (IMVS/IMPS) and Electrochemical Impedance Spectroscopy (EIS) under illumination and by ultrafast spectroscopy. The final objective of PEROVSTAB after 15 months research is to reach above 20 % power conversion efficiency and for first time to pass the standard IEC61646 protocol for accelerating thin film PV ageing test (ie. 1000 hours at 60°C/100 mW.cm-2 of light, 1000 hours at 85°C/85 % RH, 200 cycles damp heat test -40°C/85°C with > 80 % PCE retention). PEROVSTAB intends to enhance stability of hybrid halide PSCs towards the standards of more mature PV technologies. PSCs is today the most credible technology to come as a top cell of Si in tandem devices without any substantial elevation of production cost. 28 % power conversion efficiency has already been demonstrated, which was ca. 4 % more than the single Si junction.

Parcours

  • Research Assistant (School of Chemical and Biomedical Engineering, Nanyang Technological University (NTU), 2019, Noval materials for Zn-air batteries)
  • PhD (Labo of Electrochemical energy storage and conversion technologies, Prof. Wang Xin, 2015-2019, Energy Materials, Nano- and Micro-characterization, water splitting, carbon dioxide reduction, batteries
  • Master (Kyungpook National University (KNU) – South Korea, 2013-2015)

Compétences

Functional materials synthesis, Materials’ Nano- and Micro-characterization, Electrochemistry, IMVS/IMPS/EIS sous illumination/IPCE

Projets en cours

MOPGA Program/15 months/French government scholarship status (BGF)


Moisture-induced non equilibrium phase segregation in triple cation mixed halide perovskite monitored by in situ characterization techniques and solid-state NMR

Mohammad Ali Akhavan Kazemi, Nicolas Folastre, Parth Raval, Michel Sliwa, Jean Marie Vianney Nsanzimana, Sema Golonu, Arnaud Demortiere, Jean Rousset, Olivier Lafon, Laurent Delevoye, G.N. Manjunatha Reddy, Frédéric Sauvage

Energy & Environmental Materials, 2021

exporter toutes les publis au format txt