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Aboma Mendasa, MSc, PhD. Photo.

Aboma Merdasa

Researcher

Aboma Mendasa, MSc, PhD. Photo.

Non-radiative processes in metal halide perovskite semiconductors probed by photoluminescence microscopy

Author

  • Aboma Merdasa
  • Marina Gerhard
  • Boris Louis
  • Jun Li
  • Alexander Dobrovolsky
  • Yuxi Tian
  • Johan Hofkens
  • Rafael Camacho
  • Eva Unger
  • Ivan G. Scheblykin

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