Electroluminescent properties of chemically synthesized zinc sulfide nanocrystals doped with manganese

被引：8
|
作者：
Adachi, Daisuke [1 ]
Hama, Takeshi [1 ]
Toyama, Toshihiko [1 ]
Okamoto, Hiroaki [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn Sci, Dept Syst Innovat, Osaka 5608531, Japan
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2009年 / 20卷
关键词：
ZNS NANOCRYSTALS; MN; LUMINESCENCE;
D O I：
10.1007/s10854-007-9465-4
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
High-field electroluminescence (EL) of chemically synthesized ZnS:Mn nanocrystals with a crystallite size of 4 nm was investigated using a device consisting of glass substrate/indium-tin oxide/ZnS:Mn NC emission layer/Al. For electric fields over ca. 1 MV/cm, the current was turned on, and orange EL was observed. The maximum luminance was 0.45 cd/m(2) at a DC voltage of 42 V. The EL spectrum comprises a single peak with a peak wavelength of 593 nm, which is ascribed to the (4)T(1)-(6)A(1) transitions of Mn(2+) ions. The excitation mechanism of the Mn(2+) ions is discussed according to a scheme of impact excitation by hot-electrons.
引用
收藏
页码：130 / 133
页数：4
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