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

doi:10.1021/ja100136a

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

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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 language	English (US)
Pages (from-to)	6618-6619
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	132
Issue number	19
DOIs	https://doi.org/10.1021/ja100136a
State	Published - May 19 2010

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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

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.",

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T1 - The big red shift of photoluminescence of Mn dopants in strained CdS

T2 - A case study of Mn-doped MnS-CdS heteronanostructures

AU - Zuo, Taisen

AU - Sun, Zhipeng

AU - Zhao, Yuliang

AU - Jiang, Xiaoming

AU - Gao, Xueyun

PY - 2010/5/19

Y1 - 2010/5/19

N2 - 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.

AB - 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.

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

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