Journal of the Korean Vacuum Society (한국진공학회지)

The Korean Vacuum Society (한국진공학회)
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Dielectric Function Analysis of Cubic CdSe Using Parametric Semiconductor Model

변수화 반도체 모델을 이용한 Cubic Zinc-blonde CdSe의 유전함수 분석

  • Jung, Y.W. (Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University) ;
  • Ghong, T.H. (Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University) ;
  • Lee, S.Y. (Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University) ;
  • Kim, Y.D. (Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University)
  • 정용우 (경희대학교 이과대학 물리학과 나노광물성 연구실) ;
  • 공태호 (경희대학교 이과대학 물리학과 나노광물성 연구실) ;
  • 이선영 (경희대학교 이과대학 물리학과 나노광물성 연구실) ;
  • 김영동 (경희대학교 이과대학 물리학과 나노광물성 연구실)
  • Published : 2007.01.31
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Abstract

ZnCdSe alloy semiconductor was widely used for the optoelectronic device. And CdSe is the end-point in this material. In this work, we measured the dielectric function spectrum of cubic CdSe with Vacuum Ultra Violet spectroscopic ellipsometry and analysed this data with parametric model. As a result, we observed some of transition energy point over 6 eV and obtained the database for dielectric function spectrum, which could be used for temperature or alloy composition dependence study on optical property of CdSe.

본 연구에서는 광전자 소자에 폭넓게 사용되는 ZnCdSe 화합물 반도체의 end-point인 CdSe의 유전함수 spectrum을 Vacuum Ultra Violet spectroscopic ellipsometry(타원편광분석법) 측정하여 분석하였다. 측정 결과는 변수화 모델을 이용하여 분석하였으며 그 결과 6 eV 이상에 존재하는 전자전이점들을 확인할 수 있었고 CdSe의 Critical Point(CP) 구조를 수치화 함으로써 온도나 화합물 함량에 따른 광특성 의존성 연구 등에 활용될 수 있는 database를 확보하였다.

Keywords

References

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