The big red shift of photoluminescence of Mn dopants in strained CdS: A case study of Mn-doped MnS-CdS heteronanostructures

Taisen Zuo, Zhipeng Sun, Yuliang Zhao, Xiaoming Jiang, Xueyun Gao

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

The red photoluminescence of Mn dopants in MnS-CdS heteronanostructures has been observed for the first time. The red photoluminescence at 650 nm derives from emission due to the 4T→ 6Atransition of Mn 2+ dopants in a CdS matrix exposed to gigapascal-level lattice stress. HRTEM, FFT, XRD, and optical studies revealed that the lattice of Mn-doped CdS is compressed to match that of MnS when CdS crystallizes at the MnS surface to form MnS-CdS heteronanostructures. The photoluminescence decay times of such Mn dopants are on the order of nanoseconds because of the spin-flip interactions between Mn dopants and free carriers in the CdS matrix.

Original languageEnglish (US)
Pages (from-to)6618-6619
Number of pages2
JournalJournal of the American Chemical Society
Volume132
Issue number19
DOIs
StatePublished - May 19 2010

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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