Abstract
분자선 에피택시 방법을 이용하여 GaAs 기판 위에 GaAs 및 AlGaAs 에피층을 성장하면서 성장 멈춤 효과를 연구하였다. 성장 멈춤 시간에 따른 에피층 성장 과정은 반사 고에너지 전자회절로 측정하였다. 성장 멈춤 시간은 0, 15, 30, 60초로 하였다. 그리고 성장 멈춤 시간을 달리하여 GaAs/<TEX>$Al_{0.3}Ga_{0.7}As$</TEX> 다양자우물을 성장한 후 양자우물의 특성을 조사하였다. 반사 고에너지 전자회절의 강도 진동은 성장 멈춤 시간에 영향을 받고 있었다. 그리고 양자우물의 광특성도 성장 멈춤 시간에 의존하고 있었다. 성장 멈춤 시간이 30초일 때 우물과 장벽층 사이에 급준한 계면을 가지는 에피층을 얻을 수 있었다. The growth interruption effects on growth mode of the GaAs and AlGaAs epitaxial layers grown on GaAs substrate by molecular beam epitaxy were investigated. Growth process of the epitaxial layers as a function of the growth interruption time was observed by reflection high energy electron diffraction (RHEED). The growth interruption time was 0, 15, 30, 60 s. The GaAs/<TEX>$Al_{0.3}Ga_{0.7}As$</TEX> multi quantum wells (MQWs) with different growth interruption time were grown and its properties were investigated. RHEED intensity oscillation and optical property of the MQWs were dependent on the growth interruption time. When the growth interruption time was 30 s, interface between the well and barrier layers became sharper.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.