Enhancement of photoluminescence in manganese-doped ZnS nanoparticles due to a silica shell

Anita S. Ethiraj, Neha Hebalkar, S. K. Kulkarni, Renu Pasricha, J. Urban, C. Dem, M. Schmitt, W. Kiefer, L. Weinhardt, S. Joshi, R. Fink, C. Heske, C. Kumpf, E. Umbach

Research output: Contribution to journalArticle

Abstract

Silica-protected, thioglycerol-(TG-) capped, highly luminescent, ZnS:Mn nanoparticles were synthesized. The resultant nanoparticles show a clear enhancement of photoluminescence intensity as compared to TG-capped ZnS:Mn nanoparticles without silica coating. The PL intensity peaks around 600 nm indicate that PL stems from embedded Mn ions after the irradiation is transferred from the excited ZnS to the Mn atoms. The silica shells did not modify the photoluminescence excitation or emission spectra except for changing the intensities. The silica shell was found to be semitransparent to UV and visible radiation.

Original languageEnglish (US)
Pages (from-to)8945-8953
Number of pages9
JournalJournal of Chemical Physics
Volume118
Issue number19
DOIs
StatePublished - May 15 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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    Ethiraj, A. S., Hebalkar, N., Kulkarni, S. K., Pasricha, R., Urban, J., Dem, C., Schmitt, M., Kiefer, W., Weinhardt, L., Joshi, S., Fink, R., Heske, C., Kumpf, C., & Umbach, E. (2003). Enhancement of photoluminescence in manganese-doped ZnS nanoparticles due to a silica shell. Journal of Chemical Physics, 118(19), 8945-8953. https://doi.org/10.1063/1.1566932