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Changes in Optical Properties of GaAsN During Annealing

Published online by Cambridge University Press:  01 February 2011

Ting Liu ,
Sandeep Chandril ,
Eric D. Schires ,
Nianqiang Wu ,
Xinqi Chen ,
Dimitris Korakakis  and
Thomas H. Myers
Ting Liu
Affiliation:
tliu@mix.wvu.edu, West Virginia University, ccnb, Morgantown, WV, 26506, United States
Sandeep Chandril
Affiliation:
schandri@mix.wvu.edu, West Virginia University, Physics Department, United States
Eric D. Schires
Affiliation:
fluidillusion@yahoo.com, West Virginia University, Physics Department, United States
Nianqiang Wu
Affiliation:
nick.wu@mail.wvu.edu, West Virginia University, Department of Mechanical and Aerospace Engineering, United States
Xinqi Chen
Affiliation:
xchen@northwestern.edu, Northwestern University, NUANCE Center, United States
Dimitris Korakakis
Affiliation:
Dimitris.Korakakis@mail.wvu.edu, West Virginia University, Lane Department of Computer Science and Electrical Engineering, United States
Thomas H. Myers
Affiliation:
Thomas.Myers@mail.wvu.edu, West Virginia University, Physics Department, United States
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Abstract

GaAs1−xNx layers and quantum dot-like structures were grown on (100) GaAs substrates by molecular beam epitaxy. The dependence of photoluminescence emission spectra on annealing temperature is consistent with literature at lower temperatures but after annealing at 750 °C a net red-shift is consistently observed. X-ray photoelectron spectroscopy measurements indicate that for different annealing times and temperatures, the nitrogen and arsenic surface concentrations changed compared to that of as-grown samples, specifically arsenic is lost from the material. Raman measurements are consistent with the trends in photoluminescence and also suggest the loss of arsenic occurs at higher annealing temperatures in both samples capped with GaAs and uncapped samples.

Keywords

annealingx-ray photoelectron spectroscopy (XPS)Raman spectroscopy
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 891: Symposium EE – Progress in Semiconductor Materials V – Novel Materials and Electronics and Optoelectronic Applications , 2005 , 0891-EE11-05
Copyright
Copyright © Materials Research Society 2006

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References

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