Determination of Fe sup 2+ and Fe sup 3+ concentrations of semi- insulating InP:Fe

Conference · Tue Dec 31 23:00:00 EST 1991

OSTI ID:7047919

Zach, F X; Bourret, E D ^[1]; Bliss, D ^[2]; Weber, E R; Haller, E E ^[3]

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1. Lawrence Berkeley Lab., CA (United States)
2. Rome Lab., Hanscom AFB, MA (United States)
3. California Univ., Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering

Semi-insulating InP is most commonly obtained by doping with the deep acceptor iron to compensate the shallow donors which otherwise render the material n-type conducting. As the Fermi level in semi-insulating InP is closed to the iron acceptor level, both charge states - Fe{sup 2+} as well as Fe{sup 3+} corresponding to the acceptor level occupied unoccupied by an electron - are present. Mayor et al.(1) presented a method based on absorption measurements in the nearbandgap region of InP to determine the concentration of both charge states separately. In this paper we compare iron concentrations obtained by this method with the results from intracenter absorption, DLTS, EPR, Hall effect measurements and glow discharge mass spectroscopy. We present a new calibration for the optical absorption cross sections.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: DOE; DOD; DFG; USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States); Deutsche Forschungsgemeinschaft, Bonn (Germany)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7047919
• Report Number(s): LBL-31578; CONF-9204168--1; ON: DE92017119; CNN: FQ 76190027
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ABSORPTION SPECTROSCOPY
ABSORPTIVITY
CALIBRATION
CHARGED PARTICLES
DOPED MATERIALS
ENERGY LEVELS
FERMI LEVEL
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
IONS
IRON IONS
MATERIALS
OPTICAL PROPERTIES
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SPECTROSCOPY
VALENCE