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Characteristics of Silicon Photodetector Using Epitaxial Wafer with High Resistivity and Long Recombination Lifetime

Published online by Cambridge University Press:  21 February 2011

Yoshimaro Fujii
Affiliation:
Hamamatsu Photonics K.K., 1126-1, Ichino-cho, Hamamatsu 435, Japan
Akira Usami
Affiliation:
Nagoya Institute of Technology, Nagoya 466, Japan
Keisuke Kaneko
Affiliation:
Nagoya Institute of Technology, Nagoya 466, Japan
Takao Wada
Affiliation:
Nagoya Institute of Technology, Nagoya 466, Japan
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Abstract

For the high quality Si Photodetector, the high resistivity epitaxial wafer using the low resistivity substrate were studied. The buffer layer was introduced in the interface, and it was very effective on the crystal quality of the epitaxial layer. Recombination lifetime in the epitaxial layer became very uniform and long even in the interface region which was confirmed by measuring the lifetime depth profiles. Then Si PIN Photodiode was fabricated on the above high quality epitaxial wafer and its optoelectric characteristics was evaluated.

Type
Research Article
Copyright
Copyright © Materials Research Society 1993

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References

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