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Abstract
The modulation spectroscopy Photoreflectance (PR) is a contact_free, nondestructive, sensitive, optical experimental method for examining the surface and interface properties of semiconductors. Many experimental results indicate a phase delay of the photoreflectance signal relative to the optical Modulation (1:4). The Phase dependence of the PR-signal has been investigated by using the two-channel lock-in techniqe. The linear form of the phase diagram is a confirmation of the single -component character of the PR-signal. As the first step, we simulate the structure in the phase diagram of two components spectrum. When we change the range of photon energy values, the structures in phase diagram don't change so much.
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Article Details
Issue: Vol 8 No 4 (2005)
Page No.: 34-38
Published: Apr 30, 2005
Section: Article
DOI: https://doi.org/10.32508/stdj.v8i4.2988
Copyright Info
Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
How to Cite
Ngoc Ha, N., Kim Hieu, T., Thanh Tung, N., & Hong Vu, L. (2005). LOCK-IN-PHASE ANALYSIS OF n-GaAs PHOTOREFLECTANCE SPECTRA. Science and Technology Development Journal, 8(4), 34-38. https://doi.org/https://doi.org/10.32508/stdj.v8i4.2988
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