Seminar & Colloquium
[세미나: 11월 10일(목), 오전 11시] University of Cambridge, Prof. Sam Stranks
Title
Understanding and controlling recombination on different length scales in halide perovskite devices
Speaker
Professor Sam Stranks, Professor of Optoelectronics and Royal Society University Research Fellow at the University of Cambridge
Education
- 2007-2012 University of Oxford, Physics (Rhodes Scholar), Institute of Physics Roy Thesis Prize
- 2003-2007 University of Adelaide, BSc (Physics and Physical Chenmistry), BA (German and Applied Mathematics)
Professional Experience
- 2022.10- 현재 Professor, University of Cambridge (Principal Investigator of Strankslab)
- 2017-2022 University Lecturer, University of Cambridge (Principal Investigator of Strankslab)
- 2014-2016 Marie Curie Fellow, Massachusetts Institute of Technology (Postdoc)
- 2012-2014 Junior Research Fellow, Oxford University, Worcester College (Postdoc)
| Date | Thursday, November 10th, 2022
| Time | 11:00 ~
| Venue | 33동 125호 (WCU 다목적실)
[Abstract]
Halide perovskites are generating enormous excitement owing to their use in high-performance optoelectronic devices including solar cells and LEDs. However, there remains performance losses and operational instability pathways in devices that limit their true potential. This talk will outline a series of multimodal microscopy methodologies to unveil nanoscale insights into state-of-the-art alloyed halide perovskite devices, providing detailed information about the impact of defects on both performance and stability. Correlations between local structural and carrier trapping measurements reveal nanoscale phase impurities that act as carrier traps and sites that seed degradation. The talk will summarise our global understanding of carrier recombination and degradation mechanisms on the nanoscale, and outline strategies to further improve performance and stability. I will then demonstrate progress making use of this fundamental understanding to develop all-perovskite tandem solar cells for energy and photodetection applications, as well as monochromatic and white light emitting diodes for efficient, high-quality lighting and displays.
| Host | 강기훈 교수 (880-7189)