Relaxation processes in lead sulfide quantum dots

A. M. Malyarevich, M. S. Gaponenko, N. N. Posnov, V. G. Savitski, K. V. Yumashev, G. E. Rachkovskaya, G. B. Zakharevich, S. G. Hickey, A. A. Lipovskii, A. A. Onushchenko, A. A. Zhilin

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Lead sulfide QDs of ∼4.5 nm in size embedded in glass and colloid matrices have been studied using picosecond pump-probe differential absorption and luminescence techniques. Energy and temporal characteristics of charge carriers relaxation processes by direct electron-hole recombination and through deep surface defect states are evaluated. An influence of type of matrix on the defect structure and relaxation rate is discussed.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Physics, Chemistry and Application of Nanostructures, NANOMEETING 2007 - Reviews and Short Notes
Pages157-160
Number of pages4
Publication statusPublished - 1 Dec 2007
EventInternational Conference on Physics, Chemistry and Application of Nanostructures, NANOMEETING 2007 - Minsk, Belarus
Duration: 22 May 200725 May 2007

Conference

ConferenceInternational Conference on Physics, Chemistry and Application of Nanostructures, NANOMEETING 2007
CountryBelarus
CityMinsk
Period22/05/0725/05/07

Keywords

  • lead sulfide
  • quantum dots
  • relaxation processes
  • nanostructures
  • differential absorption
  • electron-hole recombination

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