Neuchâtel, Switzerland
Career planning: *Leading R&D projects on leading-edge technologies for sustainable development *Working in team with strong interactions with partners, both academics and industrial Fields of expertise: *Optics & photonics *Material sciences *Photovoltaics & renewable energies I am the author or co-author of 10+ papers and hold several patents.
In collaboration with our industrial partner Roth & Rau, I am in charge of the development of high-efficiency solar cells. I proposed innovative approaches to boost the cells performances. We thus reach world-class efficiencies on these cells.
As a PhD candidate in the crystalline silicon solar cells R&D team, I have led the following key tasks : * Development of laser doping & laser annealing strategies for solar cells efficiency enhancement; * Successful application of these steps to selective emitter silicon solar cells processing and writing relevant patents; * Publishing of several papers in top-ranked journals & international conferences proceedings (see Publications section below). This Ph.D thesis was entitled "Laser doping and laser annealing for crystalline silicon solar cells processing". Below are the abstract and the related keywords. Thesis abstract This study aims at investigating laser doping and laser annealing for crystalline silicon solar cells processing. Laser-processed emitters are firstly realized using three lasers and different dopants sources. The lasers are a nanosecond green laser, an excimer laser and a high-frequency ultraviolet laser. As dopants sources we used either phosphosilicate glass, phosphorus and boron-doped silicon nitrides, or phosphorus and boron ion implantation. Efficient phosphorus and boron doping are obtained using any of these laser/sources couple. In particular, low sheet resistances and low emitter saturation current densities are obtained. These laser processes are then applied to selective emitter and boron back-surface-field solar cells. Laser-doped selective emitter solar cells (using phosphosilicate glass as a dopants source) reach 18.3% efficiency. This represents an overall gain of 0.6%abs when compared to standard homogeneous emitter. On the other hand, laser-annealed boron back-surface-field solar cells (using implanted boron as a dopants source) feature an overall gain of 0.3%abs when compared to standard aluminium back-surface-field solar cells, thus yielding an efficiency of 16.7%. Keywords Silicon ; Photovoltaics ; Laser doping ; Laser annealing ; Selective emitter ; Boron BSF
I developed numerous algorithms to investigate the optical properties of transparent conductive oxides used in solar cells or panel displays. These algorithms were afterwards successfully used to assess the quality of Saint-Gobain’s products.