Lattice defect assisted incorporation of Mn2+ ions in cubic II-VI semiconductor quantum dots

被引：8

作者：

Nistor, S. V. ^{[1
]}

Stefan, M. ^{[1
]}

Nistor, L. C. ^{[1
]}

Ghica, D. ^{[1
]}

Mateescu, C. D. ^{[1
]}

Barascu, J. N. ^{[1
]}

机构：

[1] Natl Inst Mat Phys, Magurele 077125, Romania

来源：

11TH EUROPHYSICAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS (EURODIM 2010) | 2010年 / 15卷

关键词：

ZNS NANOPARTICLES; MESOPOROUS STRUCTURE; NANOCRYSTALS; EPR; PHOTOLUMINESCENCE; RESONANCE; SPECTRA; STATES; SITES;

D O I：

10.1088/1757-899X/15/1/012024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron paramagnetic resonance spectra from substitutional Mn2+ ions in quantum dots of cubic ZnS with tight size distribution centred at 2 nm were recorded in the 9.8 GHz and 34 GHz frequency bands. Their quantitative analysis with line shape simulation and fitting computer programs accounting for both forbidden transitions and line broadening effects demonstrate the presence of a local axial distortion attributed to a neighbouring extended planar stacking defect. The presence of such extended lattice defects, confirmed from a high resolution transmission electron microscopy study on presently investigated cubic ZnS quantum dots, seems to be essential in the incorporation and localization of Mn2+ activating ions in other cubic II-VI semiconductor quantum dots as well.

引用

页数：7

共 24 条

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