08 jun 2021 Bijdrage Solliance partners aan 48ste IEEE PVSC
Numerous researchers, affiliated with UHasselt, imec, TNO and Solliance, will present their latest results at the 48th IEEE Photovoltaic Specialists Conference (PVSC 48), June 20-25, 2021. The talks andwork included are part of the European Union’s H2020 research and innovation program under grant agreement No. 715027. This project focuses on the development of a novel architecture for ultra-thin CIGS solar cells by passivating the rear and front surfaces.
Gizem Birant is working on rear surface passivation of ultra-thin (500nm) CIGS solar cells. In this study, she created nano-sized openings in Al2O3 dielectric layers, up to 30 nm thick, with a fast, repeatable, and industrially viable approach. If you want to learn the details of this novel approach, and how this approach applied to the solar cells and its effects on conversion efficiencies, you can join her talk titled: “Creating nano-sized contact openings in the thick dielectric-based passivation layers for ultrathin CIGS solar cells: A cost and time-effective approach.”
Dilara Gokcen Buldu is working on front surface passivation for CIGS solar cells. Using the Al2O3/CIGS front interface as an example, she showed that it is possible to apply any oxide with desirable interface properties and protect it from adverse conditions that would normally damage it during further processing, by using a multi-stack design. In her talk: “A multi-stack Al2O3/HfO2 design with contact openings for front surface of Cu(In,Ga)Se2 solar cells” she will present her findings on the use of a thin HfO2 capping layer to protect Al2O3 during the final steps of solar cell production and show how this approach can be used as an advantage to create contact openings.
Dilara Gokcen Buldu (r) and Gizem Birant (l)
Thierry Kohl is working on the development and characterization of CIGS solar cells. In his most recent work he has focussed on the development of a novel characterization methodology for capacitive measurements of solar cells. His research shows how this methodology can be used to investigate a wide variety of post deposition and passivation treatments applied to the solar cells. In his talk “Bias dependent admittance spectroscopy: the impact of sodium supply on the Cu(In,Ga)Se2 growth” he will show what impact the supply of sodium during the absorber growth has on the finished thin-film solar cell.