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courbe en fond

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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)