Tunable photoluminescence of polymer doped with PbSe quantum dots

Igor Voitenko, J. F. Muth, Michael Gerhold, Dehu Cui, Jian Xu

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Semiconductor nanoparticle/polymer composites potentially allow the design of photonic materials for optoelectronic devices. The optical characteristics of PbSe quantum dots placed in polymer matrices are investigated for potential applications in electrically controlled absorption modulators and integrated optical circuit components. The photoluminescence yield, shape of absorption band, and effects of size variation of PbSe quantum dots on spectral features are analyzed near the absorption edge of host polymers for the different concentrations of nanocrystals in the composite. It was found that for quantum dots of nominally the same size, there is a strong dependence of position of the absorption peaks in the spectrum depending on the concentration of quantum dots. This results in the emission in the 1500-1600 nm range being tunable with quantum dot concentration. A second emission in the 1200-1300 nm range was also observed and energy transfer from the polymer matrix to the quantum dot appears to mediate the strength of this photoluminescence.

Original languageEnglish (US)
Pages (from-to)1078-1081
Number of pages4
JournalMaterials Science and Engineering C
Volume27
Issue number5-8 SPEC. ISS.
DOIs
StatePublished - Sep 1 2007

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Tunable photoluminescence of polymer doped with PbSe quantum dots'. Together they form a unique fingerprint.

Cite this