標題: Electrooptical properties of GaNAs/GaAs multiple quantum well structures
作者: Lee, JR
Chen, YY
Lu, CR
Lee, WI
Lee, SC
電子物理學系
Department of Electrophysics
關鍵字: photoreflectance;GaNAs/GaAs;quantum well
公開日期: 25-Jul-2003
摘要: The electrooptical properties of the GaNAs/GaAs multiple quantum well structures have been studied using the photoreflectance spectroscopy from 20 K to room temperature. Above the band gap energy of GaAs, Franz-Keldysh oscillations were observed. The period of the Franz-Keldysh oscillations decreased slightly with decreasing temperature, and indicated that the corresponding space charge distribution varied slowly with temperature. The modulated quantum well transition features were observed below the band gap energy of GaAs. A matrix transfer algorithm was used to calculate the quantum well subband energies numerically. The band gap energy and the electron effective mass of the GaNAs/GaAs system were adjusted to obtain the subband energies to best fit the observed quantum well transition energies. (C) 2003 Elsevier Science B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/S0921-5107(03)00112-0
http://hdl.handle.net/11536/27702
ISSN: 0921-5107
DOI: 10.1016/S0921-5107(03)00112-0
期刊: MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
Volume: 100
Issue: 3
起始頁: 248
結束頁: 251
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