Annual Report for 1 October 1992-30 September 1993 on Contract N00014- 90-J-1267 (University of Illinois)

Abstract

We performed theoretical calculations on the electronic structures of (ZnSe)m(Cd(1-x)Zn(x)Se)(n) superlattices. First-principle pseudopotential calculations are used to obtain the valence-band offset for CdSe grown on ZnSe. We then use an empirical non-local pseudopotential method to calculate the band structures and effective masses of (ZnSe)(m)(Cd(1-x)Zn(x)Se)(n) superlattices grown on ZnSe, including the spin-orbit interaction. The effects of strain due to lattice mismatch have been properly taken into account. We have also studied the band gap as a function of composition and layer thicknesses of constituent materials in superlattices. The results are in agreement with recent experiment. The quantum well made from these materials is an important candidate for quantum-well lasers operating in the blue-green wavelengths.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1993
Accession Number
ADA275970

Entities

People

  • S.-f. Ren
  • Yia-Chung Chang
  • Z-q. Gu

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Gaps
  • Band Structures
  • Crystal Growth
  • Energy Bands
  • Materials
  • Optical Properties
  • Plane Waves
  • Quantum Properties
  • Quantum Well Lasers
  • Quantum Wells
  • Semiconductors
  • Spin-Orbit Interaction
  • Superlattices
  • Valence Bands
  • Work Functions

Fields of Study

  • Materials science

Readers

  • Defense Financial Management and Audit.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Semiconductor Device Technology

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics
  • Quantum Computing
  • Space