Influence of excitation wavelength on photoluminescence properties of CdSe/CdZnS colloidal quantum dots on micro-patterned silver films

Rizwan Khan, Ju Won Jeon, Lee Woon Jang, Min Kyu Kim, Eun Yee Ko, Joo In Lee, In Hwan Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We examined the excitation wavelength dependence of photoluminescence (PL) property in CdSe/CdZnS colloidal quantum dots (QDs) on micro-patterned silver (Ag) films (MPSFs). PL quenching of the fluorophore was observed when the excitation wavelength was out of the absorption range of MPSF substrates. In contrast, when the excitation wavelength was within the absorption spectrum range, the PL intensity on Ag films was markedly enhanced by a factor of two. It was expected that the principal causes on the PL properties of the fluorophore on Ag films would be the energy match between the incident light and the surface plasmon of Ag metal films.

Original languageEnglish
Pages (from-to)451-455
Number of pages5
JournalElectronic Materials Letters
Volume10
Issue number2
DOIs
Publication statusPublished - 2014 Mar
Externally publishedYes

Keywords

  • CdSe/CdZnS
  • colloidal quantum dot
  • photoluminescence
  • silver film
  • surface plasmon

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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