Excitation mechanism of luminescence centers in nanostructured ZnS:Tb thin-film electroluminescent devices

被引:0
作者
Adachi, D. [1 ]
Takei, K. [1 ]
Toyama, T. [1 ]
Okamoto, H. [1 ]
机构
[1] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan
来源
IDW '06: PROCEEDINGS OF THE 13TH INTERNATIONAL DISPLAY WORKSHOPS, VOLS 1-3 | 2006年
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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
Excitation mechanism of luminescence centers in low-operation-voltage nanostructured thin-film electroluminescent (NS-TFEL) device, of which emission layer is a multilayer composed with 4-nm-thick activator-ion-doped ZnS nanocrystal (NC) layers and 0.7-nm-thick insulating interlayers, has been studied. The voltage-dependence of EL intensity ratio originated from the D-5(3) and D-5(4) level of Tb3+ has revealed that the dominant mechanism is attributed to the direct-impact excitation by hot-electrons.
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页码:401 / 404
页数:4
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