Open AccessTHE OPTICAL PROPERTIES OF STRAINED SUPERLATTICE (ZnS)1/(ZnSe)1(001)
Author(s) -
Kaihang Li,
Huang Mei-Chun
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.2066
Subject(s) - superlattice , materials science , band gap , substrate (aquarium) , electronic band structure , optoelectronics , condensed matter physics , photon energy , atomic orbital , optics , photon , physics , oceanography , quantum mechanics , geology , electron
The linear muffin tin orbitals method was adopted to calculate the band structures of the strained- superlattice (ZnS)1/(ZnSe)1(001) grown on the Si substrate.In our calculation the external adjusted potential was used to overcome the problem of too small a band gap in it.On the basis of relatively accurately calculated band structure and wave function for this system,we calculated the imaginary part of dieletric function of the superlattice system.The results showed that the optical properties of (ZnS)1/(ZnSe)1(001) grown on the Si substrate consisted of the optical properties of bulk ZnS and of bulk ZnSe,and they have rather good optical response over a wide range of photon energy;futhermore,the superlattices are direct band gap materials.Thus the superlattices will become the promising materials for optoelectronic device applications.