Photoreflectance Spectroscopy Characterization of Ge/Si0.16Ge0.84Multiple Quantum Wells on Ge Virtual Substrate-Reference-Cited by-同舟云学术

Photoreflectance Spectroscopy Characterization of Ge/Si0.16Ge0.84Multiple Quantum Wells on Ge Virtual Substrate

Published:2013 Issue: Volume:2013 Page:1-6
ISSN:1687-8108
Container-title:Advances in Condensed Matter Physics
language:en
Short-container-title:Advances in Condensed Matter Physics

Author:

Hsu Hung-Pin¹^ORCID,Yang Pong-Hong¹,Huang Jeng-Kuang¹,Wu Po-Hung²,Huang Ying-Sheng²,Li Cheng³,Huang Shi-Hao³,Tiong Kwong-Kau⁴

Affiliation:

1. Department of Electronic Engineering, Ming Chi University of Technology, 84 Gungjuan Road, Taishan, Taipei 243, Taiwan

2. Department of Electronic Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan

3. Department of Physics, Semiconductor Photonics Research Center, Xiamen University, Xiamen 361005, China

4. Department of Electrical Engineering, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 202, Taiwan

Abstract

We report a detailed characterization of a Ge/Si0.16Ge0.84multiple quantum well (MQW) structure on Ge-on-Si virtual substrate (VS) grown by ultrahigh vacuum chemical vapor deposition by using temperature-dependent photoreflectance (PR) in the temperature range from 10 to 300 K. The PR spectra revealed a wide range of optical transitions from the MQW region as well as transitions corresponding to the light-hole and heavy-hole splitting energies of Ge-on-Si VS. A detailed comparison of PR spectral line shape fits and theoretical calculation led to the identification of various quantum-confined interband transitions. The temperature-dependent PR spectra of Ge/Si0.16Ge0.84MQW were analyzed using Varshni and Bose-Einstein expressions. The parameters that describe the temperature variations of various quantum-confined interband transition energies were evaluated and discussed.

Funder

National Science Council

Publisher

Hindawi Limited

Subject

Condensed Matter Physics

Link

http://downloads.hindawi.com/journals/acmp/2013/298190.pdf

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