Optical Properties of Co2+ Doped ZnS Nanocrystals

被引：0
|
作者：
Sarkar, R. [1 ]
Kumbhakar, P. [1 ]
Mitra, A. K. [1 ]
机构：
[1] Natl Inst Technol, Dept Phys, Durgapur 713209, India
来源：
INTERNATIONAL CONFERENCE ON ADVANCED NANOMATERIALS AND NANOTECHNOLOGY (ICANN 2009) | 2010年 / 1276卷
关键词：
Cobalt doped ZnS; Nanocrystals; Optical properties; Photoluminescence; PHOTOLUMINESCENCE;
D O I：
10.1063/1.3504348
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZnS nanocrystals with Co2+ doping have been prepared through a soft chemical route. The undoped ZnS and Co2+ doped ZnS:Co nanocrystals have been analyzed using X-ray diffraction (XRD), high resolution transmission electron microscope (HRTEM), and ultraviolet-visible (UV-VIS) spectrophotometer. Undoped sample exhibits room-temperature photoluminescence (PL) emission in the blue region with a broad spectral band peaked at similar to 397 nm under UV excitation. But from the 1.5% Co2+ doped samples, a strong blue emission peaked at similar to 470nm is observed and further increase in doping leads to considerable blue shift and enhancement in intensity of the PL spectrum.
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页码：8 / 13
页数：6
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