Seminar & Colloquium
[세미나: 10월 30일(수), 오전 9시 40분] Prof. Henk J. Bolink, Universidad de Valencia
Title
Vacuum processed perovskites for solar cells and LEDs
Speaker
Prof. Henk J. Bolink, Instituto de Ciencia Molecular, Universidad de Valencia
* Biography
Hendrik (Henk) Bolink is professor at the Inorganic Chemistry Department and group leader at the Instituto de Ciencia Molecular of the Universidad de Valencia. He obtained his PhD in Materials Science at the University of Groningen in 1997. After that he worked at DSM as a materials scientist and project manager in the central research and new business development department, respectively. In 2001 he joined Philips, to lead the materials development activity of Philips´s PolyLED project.
He has worked on organic semiconductor opto-electronic devices since 1993. From 2013 he started working on perovskite based LEDs and solar cells. Focusing mainly on dry processing routes, such as thermal sublimation to prepare the perovskite semiconductor films and subsequent devices. He directed 28 PhD thesis and has been PI of ca. 25 industry funded research projects and of 18 European funded projects. In 2019 he received an Advanced Grant from the European Research Council. He published over 350 scientific paper that were cited over 30000 times (google scholar).
| Date | Wednesday, October 30th, 2024
| Time | 10:00 ~ 11:00
| Venue | 33동 222호(동부 세미나실)
[Abstract]
The benefits of vacuum processed perovskite solar cells will be discussed focusing on thermal co-sublimation but also using close-space sublimation methods. The performance of these cells under accelerated stress conditions, under high energy radiation and under outdoor stressing will be presented. Adding co-sublimation additives to the perovskite leads to improvements in performance and power conversion efficiencies around 20 % for perovskites with a bandgap around 1.68 eV can be achieved. Benefits of passivation molecules on the photoluminescence quantum yield and open circuit voltage will be described.
I will also discuss the benefit of using these perovskites in substrate configuration as well as semitransparent cells for bifacial operation and for building integrated PV. The use of sublimed perovskite in perovskite-silicon tandem cells using fully textured Si bottom cells will be presented, including methods to identify the shortcomings of these tandem cells. Beyond photovoltaics, results of perovskites in OLEDs will be briefly discussed.
| Host | 이태우 교수(02-880-8021)