Accession Number:

ADA003981

Title:

Investigation of Basic Electronic Transport, Recombination and Optical Properties in InAs(1-x)P(x) Alloy Systems and the GaSb Epitaxial Films for 1 - 2 Micrometer IR Applications

Descriptive Note:

Semi-annual progress rept. no. 1, 1 Dec 1973-31 May 1974

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1974-06-15

Pagination or Media Count:

84.0

Abstract:

A systematic study has been made on the effect of hydrogen carrier gas flow-rate on the electron concentration and electron mobility of the epitaxially grown InAs0.61P0.39 samples. Resistivity and Hall effect measurements yield the resistivity, Hall coefficient, electron mobility and electron density as a function of temperature between 3K and 300K for epitaxial samples 153 to 159 and the bulk samples H-2, H-5 and H-6. The activation energy for the donor states, the density of donors and acceptors and scattering mechanisms for electrons in InAs1-xPx alloys were calculated and analyzed. The alloy compositions were determined from the electron microprobe analysis. The energy band gap versus alloy composition for the InAs1-xPx system was deduced from the optical transmission data. Optical absorption coefficients near the fundamental absorption edge were obtained for bulk samples H-1, H-2, H-5, H- 6, H-7 and W16. The result shows that the energy band gap varies linearly with the alloy composition in InAs1-xPx.

Subject Categories:

  • Infrared Detection and Detectors
  • Crystallography
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE