Dye-Sensitized Solar cells with efficiency over 10.3% based on inverse opal nanostructures in the photoelectrode sensitized with an organic dye
2018, 28, 1706291
Poster award for Asma Medjahed at "Journées Pérovskites Hybrides" in Angers
Asma Medjahed from SyMMES/STEP was one of the two awardees receiving this year's poster prize at the 3rd French meeting on hybrid perovskites "JPH 2017" taking place in Angers 09/10 May. This meeting, supported by the newly created GDR HPERO (http://gdr-hpero.cnrs.fr), gathered 120 participants and plenary lectures were given by Prof. Michael Grätzel (EPFL Lausanne), Prof. David Mitzi (Duke University) and Dr. Jacky Even (INSA Rennes). The fourth edition of the meeting will take place in Spring 2018 in the Grenoble area.
Direct evidence of chlorine-induced preferential crystalline orientation in hybrid perovskites grown on TiO2
Synchrotron X-ray diffraction microscopy has been applied to investigate of chlorine in the growth of methylammonium lead iodide perovskite thin films on TiO2. Our results put into direct evidence that chlorine locates mainly at the TiO2-perovskite interface and induces the growth of larger crystallites showing preferential orientation along the (110) direction. The effect of chlorine is significantly enhanced on single-crystalline TiO2 (001) substrates. See : Bouchard
et al. J. Phys. Chem. C
Metal-free organic sensitizers for DSSCs
Tremendous progress has been achieved in the past decade in the efficiency of dye-sensitized mesoscopic solar cells (DSSC), owing to the development of new metal-free organic sensitizers. To increase their commercial attractiveness and to make them a realistic approach towards energy markets such as BIPV (building integrated photovoltaics), the new dyes must be cheap, colorful, and efficient, and moreover they must show a high stability. Recently, we have reported a family of donor–acceptor type metal-free photosensitizers with simple structures for DSSCs. The precise molecular design of the dyes leads to a quite narrow light absorption in the visible range and a high photon-to-electrical current conversion in solar cells. These organic sensitizers that can be prepared in few steps show power efficiencies over 10% when they are used with iodine-based liquid electrolytes. Stability tests and fabrication of semitransparent solar modules with an active area of 1400 cm2 demonstrate the potential of these organic dyes for large scale applications and mass production for BIPV.
See : D. Joly
Energy Environ. Sci., (2015), 8, 2010
Jinhyung Park winner of February 2015 NanoART contest
Damien Joly awarded best poster prize at HOPV-14
New organic dyes
and nanostructured electrodesfor applications in dye sensitized solar cells.
Aurélie Lefrançois awarded L'Oréal-Unesco for women and science fellowship
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.