Diffusion of Ni, Ga, and As in the surface layer of GaAs and characteristics of the Ni/GaAs contact
The authors investigate the low-temperature codiffusion of Ni, Ga, and As in the surface layer of gallium arsenide and study its effect on the current-voltage characteristics of a Ni/GaAs rectifier contact. The concentration distribution of atoms in the function layer of a Ni-GaAs system was investigated by the methods of layerwise radiometric and neutron-activation analyses. It was found that interdiffusion of components takes place in the Ni-GaAs system in an elastic stress field, generated by the differences in the lattice parameters and thermal-expansion coefficients of Ni, GaAs, and the intermetallic compound which form. The form and parameters of the current-voltage characteristics of a Ni/GaAs contact are determined by the phase composition and the structure of the junction layer.
- Research Organization:
- N. I. Lobachevskii For'kii State Univ., USSR
- OSTI ID:
- 5974496
- Journal Information:
- Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:2; Other Information: Translated from Izv. Akad. Nauk SSSR, Neorg. Mater.; 23: No. 2, 186-189(Feb 1987)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ARSENIC
DIFFUSION
METALLURGICAL EFFECTS
GALLIUM
GALLIUM ARSENIDES
CRYSTAL DOPING
ELECTRIC CONDUCTIVITY
NICKEL
ACTIVATION ANALYSIS
ANNEALING
DEPLETION LAYER
ELECTRIC FIELDS
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
NEUTRON REACTIONS
TEMPERATURE DEPENDENCE
ALLOYS
ARSENIC COMPOUNDS
ARSENIDES
BARYON REACTIONS
CHEMICAL ANALYSIS
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
ELEMENTS
GALLIUM COMPOUNDS
HADRON REACTIONS
HEAT TREATMENTS
LAYERS
METALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PHYSICAL PROPERTIES
PNICTIDES
SEMIMETALS
TRANSITION ELEMENTS
360602* - Other Materials- Structure & Phase Studies
360604 - Materials- Corrosion
Erosion
& Degradation
360102 - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures