Aboma Merdasa
Researcher
Non-radiative processes in metal halide perovskite semiconductors probed by photoluminescence microscopy
Author
Summary, in English
Organo metal halide perovskites are solution processed semiconductors that recently attracted a great attention. They possess a rather "soft" and (photo) chemically active solid structure allowing for ion migration and other mass diffusion processes. This is a likely reason why non-radiative recombination centres in these materials are activated and deactivated on relatively slow time-scales. This dynamics reveals as photoluminescence (PL) fluctuations (blinking) of individual microcrystals and local areas of films and allows for application of a broad range of single molecule spectroscopy methods including optical super-resolution. Studying PL blinking resolves properties of individual non-radiative centres and helps to unravel their chemical nature.
Department/s
- Chemical Physics
- NanoLund: Centre for Nanoscience
Publishing year
2018-09-26
Language
English
Publication/Series
EPJ Web of Conferences
Volume
190
Document type
Conference paper
Publisher
EDP Sciences
Topic
- Condensed Matter Physics
- Physical Chemistry
Conference name
13th International Conference on Hole Burning, Single Molecule, and Related Spectroscopies: Science and Applications, HBSM 2018
Conference date
2018-08-06 - 2018-08-12
Conference place
Moscow, Russian Federation
Status
Published
ISBN/ISSN/Other
- ISSN: 2101-6275