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

標題:	Photoluminescence studies of type-II diluted magnetic semiconductor ZnMnTe/ZnSe quantum dots
作者:	Kuo, M. C. Hsu, J. S. Shen, J. L. Chiu, K. C. Fan, W. C. Lin, Y. C. Chia, C. H. Chou, W. C. Yasar, M. Mallory, R. Petrou, A. Luo, H. 電子物理學系 Department of Electrophysics
公開日期:	25-十二月-2006
摘要:	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. (c) 2006 American Institute of Physics.
URI:	http://dx.doi.org/10.1063/1.2424654 http://hdl.handle.net/11536/11422
ISSN:	0003-6951
DOI:	10.1063/1.2424654
期刊:	APPLIED PHYSICS LETTERS
Volume:	89
Issue:	26
結束頁:
顯示於類別：	期刊論文

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