Photoluminescence studies of type-II diluted magnetic semiconductor ZnMnTe/ZnSe quantum dots

M. C. Kuo; J. S. Hsu; J. L. Shen; K. C. Chiu; W. C. Fan; Y. C. Lin; C. H. Chia; W. C. Chou; M. Yasar; R. Mallory; A. Petrou; H. Luo

doi:10.1063/1.2424654

Photoluminescence studies of type-II diluted magnetic semiconductor ZnMnTe/ZnSe quantum dots

M. C. Kuo
, J. S. Hsu
, J. L. Shen
, K. C. Chiu
, W. C. Fan
, Y. C. Lin
, C. H. Chia
, W. C. Chou
, M. Yasar
, R. Mallory
, A. Petrou
, H. Luo

Physics

Chung Yuan Christian University
National Yang Ming Chiao Tung University
SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Type-II diluted magnetic semiconductor ZnMnTe quantum dots (QDs) in ZnSe matrix grown by molecular beam epitaxy were investigated by conventional and magnetophotoluminescence (PL) spectroscopy. The QD emission exhibits a type-II characteristic in excitation power dependence of PL peak energy. A nonzero circular polarization of PL at the absence of magnetic field was observed. This phenomenon is attributed to the accumulation of interface charges confined in adjacent layers. The magneto-optical measurement demonstrates a magnetic-induced degree of circular polarization in the PL spectra, indicating the Mn incorporation into the QD system.

Original language	English
Article number	263111
Journal	Applied Physics Letters
Volume	89
Issue number	26
DOIs	https://doi.org/10.1063/1.2424654
State	Published - 2006

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@article{2d082ddae9474ca690f190580b95f52a,

title = "Photoluminescence studies of type-II diluted magnetic semiconductor ZnMnTe/ZnSe quantum dots",

abstract = "Type-II diluted magnetic semiconductor ZnMnTe quantum dots (QDs) in ZnSe matrix grown by molecular beam epitaxy were investigated by conventional and magnetophotoluminescence (PL) spectroscopy. The QD emission exhibits a type-II characteristic in excitation power dependence of PL peak energy. A nonzero circular polarization of PL at the absence of magnetic field was observed. This phenomenon is attributed to the accumulation of interface charges confined in adjacent layers. The magneto-optical measurement demonstrates a magnetic-induced degree of circular polarization in the PL spectra, indicating the Mn incorporation into the QD system.",

author = "Kuo, \{M. C.\} and Hsu, \{J. S.\} and Shen, \{J. L.\} and Chiu, \{K. C.\} and Fan, \{W. C.\} and Lin, \{Y. C.\} and Chia, \{C. H.\} and Chou, \{W. C.\} and M. Yasar and R. Mallory and A. Petrou and H. Luo",

year = "2006",

doi = "10.1063/1.2424654",

language = "English",

volume = "89",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "26",

}

TY - JOUR

T1 - Photoluminescence studies of type-II diluted magnetic semiconductor ZnMnTe/ZnSe quantum dots

AU - Kuo, M. C.

AU - Hsu, J. S.

AU - Shen, J. L.

AU - Chiu, K. C.

AU - Fan, W. C.

AU - Lin, Y. C.

AU - Chia, C. H.

AU - Chou, W. C.

AU - Yasar, M.

AU - Mallory, R.

AU - Petrou, A.

AU - Luo, H.

PY - 2006

Y1 - 2006

N2 - Type-II diluted magnetic semiconductor ZnMnTe quantum dots (QDs) in ZnSe matrix grown by molecular beam epitaxy were investigated by conventional and magnetophotoluminescence (PL) spectroscopy. The QD emission exhibits a type-II characteristic in excitation power dependence of PL peak energy. A nonzero circular polarization of PL at the absence of magnetic field was observed. This phenomenon is attributed to the accumulation of interface charges confined in adjacent layers. The magneto-optical measurement demonstrates a magnetic-induced degree of circular polarization in the PL spectra, indicating the Mn incorporation into the QD system.

AB - Type-II diluted magnetic semiconductor ZnMnTe quantum dots (QDs) in ZnSe matrix grown by molecular beam epitaxy were investigated by conventional and magnetophotoluminescence (PL) spectroscopy. The QD emission exhibits a type-II characteristic in excitation power dependence of PL peak energy. A nonzero circular polarization of PL at the absence of magnetic field was observed. This phenomenon is attributed to the accumulation of interface charges confined in adjacent layers. The magneto-optical measurement demonstrates a magnetic-induced degree of circular polarization in the PL spectra, indicating the Mn incorporation into the QD system.

UR - https://www.scopus.com/pages/publications/33846037314

U2 - 10.1063/1.2424654

DO - 10.1063/1.2424654

M3 - Article

AN - SCOPUS:33846037314

SN - 0003-6951

VL - 89

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

M1 - 263111

ER -

Photoluminescence studies of type-II diluted magnetic semiconductor ZnMnTe/ZnSe quantum dots

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