Metal-induced low-temperature crystallization of electrodeposited Ge thin film

被引:8
|
作者
Uchida, Yasutaka [1 ]
Funayama, Tomoko [2 ]
Kogure, Yoshiaki [3 ]
Yeh, Wenchang [4 ]
机构
[1] Teikyo Univ Sci, Fac Life & Environm Sci, Adachi Ku, Tokyo 1200045, Japan
[2] Teikyo Univ Sci, Fac Med Sci, Uenohara, Yamanashi 4090193, Japan
[3] Teikyo Univ Sci, Adachi Ku, Tokyo 1200045, Japan
[4] Shimane Univ, Interdisciplinary Grad Sch Sci & Engn, Matsue, Shimane 6908504, Japan
关键词
LAYER EXCHANGE; POLY-GE; GERMANIUM; PHOTODETECTORS; GROWTH; FABRICATION; DIFFUSION; INSULATOR; COPPER;
D O I
10.7567/JJAP.55.031303
中图分类号
O59 [应用物理学];
学科分类号
摘要
Metal-induced crystallization was applied to an electrodeposited Ge film on an insulator. It was confirmed that crystallization occurred at 150 degrees C for 1 h in ambient N-2 and that Cu, which was used as an electrode for plating, started diffusing into the Ge film even at 100 degrees C. The diffused Cu was distributed uniformly in the film, and the ratio of Cu to Ge was similar to 2.5. A fine particulate pattern, attributed to the effect of the Cu diffusion, was observed on the surface by scanning electron microscopy. We considered that the crystallization of the electrodeposited Ge occurred because of the diffusion of Cu from the electroplate electrode. Consequently, (220)-oriented Ge was obtained. The maximum grain size of the crystallized 120-nm-thick Ge film was 240 nm. (C) 2016 The Japan Society of Applied Physics
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页数:5
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