Temperature behaviour of the orange and blue emissions in ZnS:Mn nanoparticles

F. H. Su*, B. S. Ma, Z. L. Fang, K. Ding, G. H. Li, W. Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The temperature dependences of the orange and blue emissions in 10, 4.5, and 3 nm ZnS:Mn nanoparticles were investigated. The orange emission is from the 4T1-6A1 transition of Mn2+ ions and the blue emission is related to the donor-acceptor recombination in the ZnS host. With increasing temperature, the blue emission has a red-shift. On the other hand, the peak energy of the orange emission is only weakly dependent on temperature. The luminescence intensity of the orange emission decreases rapidly from 110 to 300 K for the 10 nm sample but increases obviously for the 3 nm sample, whereas the emission intensity is nearly independent of temperature for the 4.5 nm sample. A thermally activated carrier-transfer model has been proposed to explain the observed abnormal temperature behaviour of the orange emission in ZnS:Mn nanoparticles.

Original languageEnglish
Pages (from-to)12657-12664
Number of pages8
JournalJournal of Physics Condensed Matter
Volume14
Issue number47
DOIs
Publication statusPublished - 2 Dec 2002
Externally publishedYes

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