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Observation of excitonic and band-to-band behavior in ordered InGaP{sub 2} alloys

Conference ·
OSTI ID:10183250
; ; ; ;  [1]; ; ; ;  [2]
  1. Sandia National Labs., Albuquerque, NM (United States)
  2. National Renewable Energy Lab., Golden, CO (United States)

Photoluminescence measurements on ordered InGaP{sub 2} were studied as a function of temperature, laser power density, and magnetic field. The temperature varied between 1.4 and 300 K, the laser power densities ranged from 10 nW/cm{sup 2} to 20 W/cm{sup 2}, and the maximum magnetic field was 13.6 T. The data show both excitonic and band-to-band behavior, depending upon the incident laser power density. A consistent interpretation of all data leads to a type-II valence-band offset between the ordered domains.

Research Organization:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC04-94AL85000
OSTI ID:
10183250
Report Number(s):
SAND--94-2065C; CONF-9408155--4; ON: DE94018891
Country of Publication:
United States
Language:
English