Electrical control of photoluminescence wavelength from semiconductor quantum dots in a ferroelectric polymer matrix

Rafa Korlacki, Ravi F. Saraf, Stephen Ducharme

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

We report controllable tuning of the room temperature photoluminescence band of CdSe semiconductor quantum dots embedded in thin films of ferroelectric copolymer of vinylidene fluoride and trifluoroethylene made by Langmuir-Blodgett deposition. The high breakdown strength of the polymer permits the application of electric fields of up to 400 MV/m and results in a shift in the photoluminescence peak by up to 9 nm, nearly half the fluorescence band width. Moreover, we found that at these high electric fields, the Stark effect exhibits unusual fourth power dependence.

Original languageEnglish (US)
Article number153112
JournalApplied Physics Letters
Volume99
Issue number15
DOIs
StatePublished - Oct 10 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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