courbe en fond

Former staff and alumni

Waad Naim


  • PhD

Main Research Activities

The target of VISION is to develop dye-sensitized solar cells converting no more visible light but the near-infrared region to pave the way towards transparent and colorless photovoltaics. The project aims at developing (i) new robust NIR sensitizers, (ii) a new generation of mesoscopic semi-conducting film adapted to the opto-electronic properties of the NIR dyes, (iii) a colorless redox couple to regenerate the dye’s reduced state based on one electron redox mediator tailored specifically on modified Fe(+III/+II) and Ni(+IV/III) complexes. Those research activities will rely on a fourth workpackage gathering an arsenal of spectroscopic tools probing from millisecond down to femtosecond processes based on IMVS/IMPS, transient absorption spectroscopy and up-conversion photoluminescence spectroscopy. VISION-NIR targets the development of NIR-DSSC being transparent and colourless exhibiting above 7% power conversion efficiency, stable against IEC61646 protocol,and finally displaying above 75% total transmittance in the whole visible range.

Academic Training

Masters (first year) in Physical Chemistry and Chemistry of Materials (Lebanese University, 2016-2017)

Masters (second year) in Advanced Spectroscopy in Chemistry (University of Lille, 2017-2018)

Professional skills

Time Resolved Spectroscopy, Photochemistry and Photophysics

Running Projects

VISOON-NIR / 3 years / ANR

Hybrid sulfurothioate-based electrolyte improving aesthetics, performance, and stability of transparent NIR-dye-sensitized solar cells

W. Naim, F. Grifoni, V. Challuri, D. Mathiron, S. Ceurstemont, P. Chotard, T. Alnasser, I. Dzeba, N. Barbero, S. Pilard, C. Barolo, F. Sauvage

Cells Reports Physical Science, 2023

Transparent and Colorless Dye-Sensitized Solar Cells Based on Pyrrolopyrrole Cyanine Sensitizers

Baron, Thibaut; Naim, Waad; Nikolinakos, Ilias; Andrin, Baptiste; Pellegrin, Yann; Jacquemin, Denis; Haacke, Stefan; Sauvage, Frédéric; Odobel, Fabrice

Angewandte Chemie International Edition, 2022

Rationalization of excited state energy transfer in D–π–A porphyrin sensitizers enhancing efficiency in dye-sensitized solar cells

Jonnadula Venkata Suman Krishna; Seelam Prasanthkumar; Iva Dzeba; Vijay Challuri; Waad Naim; Frédéric Sauvage; Lingamallu Giribabu

Materials Advances, 2021

Transparent and Colorless Dye-Sensitized Solar Cells Exceeding 75% Average Visible Transmittance

Waad Naim, Vittoria Novelli, Ilias Nikolinakos, Nadia Barbero, Iva Dzeba, Fionnuala Grifoni, Yameng Ren, Thomas Alnasser, Amalia Velardo, Raffaele Borrelli, Stefan Haacke, Shaik M. Zakeeruddin, Michael Graetzel, Claudia Barolo, and Frédéric Sauvage

Journal of the American Chemical Society, 2021

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