Paper Title:
Temperature Dependence of the Sole Mn2+ Emissions in Manganese Doped ZnS:Mn Quantum Dots
  Abstract

ZnS:Mn Quantum dots (QDs) excess of [S2-] were synthesized by the wet chemical precipitation method with an average diameter of 3.9 nm. Temperature dependence photoluminescence measurements of ZnS:Mn QDs excited at 330nm only show a clear broad emission band with peak at ~595nm assigned to the 4T1→6A1 transition within the 3d5 configuration of Mn2+ in QDs. Through the temperature dependence of emission intensity, emission energy and full widths at half maximum (FWHM), the mechanisms are analyzed to explain the temperature behavior of Mn2+ emission observed here reasonably. The Mn2+ emission intensity decreases with increasing temperature. And the blue shift of the Mn2+ emission energy increase is also observed for increasing the temperature. Furthermore, the FWHM shows weak temperature dependence below 110 K and shows an increase with temperature increasing above 110 K. Consequently, the intrinsic mechanisms of temperature dependence photoluminescence are investigated.

  Info
Periodical
Edited by
Dehuai Zeng
Pages
572-577
DOI
10.4028/www.scientific.net/AMR.159.572
Citation
X. S. Zhang, G. F. Zhang, Q. S. Huang, F. W. Wei, Y. L. Zhou, "Temperature Dependence of the Sole Mn2+ Emissions in Manganese Doped ZnS:Mn Quantum Dots", Advanced Materials Research, Vol. 159, pp. 572-577, 2011
Online since
December 2010
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