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Passivation of Surface and Bulk Defects in InP

Published online by Cambridge University Press:  03 September 2012

Sathya Balasubramanian
Affiliation:
Department of Physics, Indian Institute of Science, Bangalore 560012, India.
Vikram Kumar
Affiliation:
Department of Physics, Indian Institute of Science, Bangalore 560012, India.
N. Balasubramanian
Affiliation:
Microelectronics Laboratory, Indian Telephone Industries, Bangalore 560 016, India
V. Premachandran
Affiliation:
Microelectronics Laboratory, Indian Telephone Industries, Bangalore 560 016, India
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Abstract

The effect of sulfur and hydrogen plasma treatment on the Schottky barrier and photoluminescence (PL) properties of p-InP is reported. Both the treatments increase the barrier height of Au/p-InP diodes and band to band PL. This is explained as being due to a shift in the surface fermi level position towards the P vacancy related pinning level in the top half of the band gap. The H+ treatment passivates the shallow and deep levels as observed from the C-V depth profile and PL respectively.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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