Correlated lifetimes of free paraexcitons and excitons trapped at oxygen vacancies in cuprous oxide

Sandhaya Koirala, Nobuko Naka, Koichiro Tanaka

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We have studied transients of luminescence due to free excitons and excitons trapped at oxygen vacancies in cuprous oxide. We find that both trapped and free paraexcitons have lifetime dependent on temperature and on the oxygen concentration. By using samples containing much less copper vacancies relative to oxygen vacancies, we find out the direct correlation between the free paraexciton lifetime and trapped exciton lifetime.

Original languageEnglish (US)
Pages (from-to)524-527
Number of pages4
JournalJournal of Luminescence
Volume134
DOIs
StatePublished - Feb 1 2013

Keywords

  • Defect levels
  • Excitons
  • Impurities

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