Ex) Article Title, Author, Keywords
Ex) Article Title, Author, Keywords
New Physics: Sae Mulli 2003; 47: 59-65
Published online July 1, 2003
Copyright © New Physics: Sae Mulli.
Dae-Jung KIM1, Young-Moon YU1, Kwang-Jae LEE1 and Yong Dae CHOI1,* Ji-Hyun MOON2, Seon-Hyang YOU2 and Byungsung O, Yang-June JUNG3
1Department of Optical & Electronic Physics Mokwon University, Daejon 305-764
2Department of Physics Chungnam University, Daejon 302-729
3Department of Physics, Mokpo National University, Muan 534-729
Correspondence to:ydchoi@mokwon.ac.kr
We have studied the optical response of ZnSe in the 1.5-8.7 eV photon energy range at room temperature by spectroscopic ellipsometry. The measured dielectric funtion spectra reveal distinct structures at energies of $E_O$, $E_O$ + $\Delta_O$, $E{\prime}_O$ + $\Delta_O$, $E_1$, $E_1$ + $\Delta_1$, $E_2$ critical points (CPs). These data are analyzed on the basis of a simpled model of the interband transition. Thus, new critical points around 6.30 eV and 8.26 eV are found to be $E_2$ and $E{\prime}_O$ + $\Delta_O$, respectively
Keywords: Spectroscopic ellipsometer, Dielectric constant, ZnSe, HWE