Operation of electroluminescent porous silicon diodes as surface-emitting cold cathodes

被引:5
作者
Sheng, X [1 ]
Ozaki, T [1 ]
Koyama, H [1 ]
Koshida, N [1 ]
Yoshikawa, T [1 ]
Yamaguchi, M [1 ]
Ogasawara, K [1 ]
机构
[1] PIONEER ELECT CO LTD, CORP RES & DEV LAB, TSURUGA, SAITAMA 35002, JAPAN
关键词
electroluminescence; porous silicon; cold cathodes; ELECTRON-EMISSION;
D O I
10.1016/S0040-6090(96)09475-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Cold electron emission properties of porous silicon (PS) electroluminescent diodes have been investigated as a function of the top metal electrode thickness, surface work function, and the thickness of PS layer. It is shown that the best thicknesses for Pt and Au electrodes are 50 - 80 Angstrom. The emission is enhanced by introducing an Al-Mg alloy electrode with a relatively low work function. Although the emission efficiency and the threshold voltage show definite dependencies on the thickness of PS layer, the Fowler-Nordheim plots show a linear behavior in every case. The maximum emission current density and efficiency obtained in this study are 10 mu A cm(-2) and 10(-3), respectively.
引用
收藏
页码:314 / 316
页数:3
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