High near-infrared photoluminescence quantum efficiency from PbS nanocrystals in polymer films

Tung Wah Frederick Chang, Ahmed Maria, Paul W. Cyr, Vlad Sukhovatkin, Larissa Levina, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

We investigate the effect of film morphology and phase segregation in polymer/colloidal PbS nanocrystal films on the near-infrared photoluminescence quantum efficiency (PLQE) of the nanocrystals. A direct correlation between the size of closed packed nanocrystal phase separated domains and lower PLQE was established. Films with a near-infrared PLQE of up to 12% have been prepared.

Original languageEnglish (US)
Pages (from-to)257-261
Number of pages5
JournalSynthetic Metals
Volume148
Issue number3
DOIs
StatePublished - Feb 10 2005

Keywords

  • Integrating sphere
  • Nanocrystal
  • Photoluminescence efficiency
  • Polymer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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