Development of bulk GaAs room temperature radiation detectors

Conference · Thu Oct 01 00:00:00 EDT 1992 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6703430

McGregor, D S; Knoll, G F ^[1]; Eisen, Y ^[2]; Brake, R ^[3]

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1. Michigan Univ., Ann Arbor, MI (United States). Dept. of Nuclear Engineering
2. Israel Atomic Energy Commission, Yavne (Israel). Soreq Nuclear Research Center
3. Los Alamos National Lab., NM (United States)

This paper reports on GaAs, a wide band gap semiconductor with potential use as a room temperature radiation detector. Various configurations of Schottky diode detectors were fabricated with bulk crystals of liquid encapsulated Czochralski (LEC) semi-insulating undoped GaAs material. Basic detector construction utilized one Ti/Au Schottky contact and one Au/Ge/Ni alloyed ohmic contact. Pulsed X-ray analysis indicated pulse decay times dependent on bias voltage. Pulse height analysis disclosed non-uniform electric field distributions across the detectors tentatively explained as a consequence of native deep level donors (EL2) in the crystal.

• OSTI ID: 6703430
• Report Number(s): CONF-911106-; CODEN: IETNAE
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 39:5; Conference: 1991 Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference, Santa Fe, NM (United States), 2-9 Nov 1991; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
SCHOTTKY BARRIER DIODES
FABRICATION
SEMICONDUCTOR DETECTORS
ALPHA SOURCES
AMERICIUM 241
ENERGY SPECTRA
GALLIUM ARSENIDES
GAMMA DETECTION
GERMANIUM
GOLD ALLOYS
KEV RANGE 10-100
KEV RANGE 100-1000
NICKEL ALLOYS
PHOTON BEAMS
TITANIUM
X-RAY EMISSION ANALYSIS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALLOYS
ALPHA DECAY RADIOISOTOPES
AMERICIUM ISOTOPES
ARSENIC COMPOUNDS
ARSENIDES
BEAMS
CHEMICAL ANALYSIS
DETECTION
ELEMENTS
ENERGY RANGE
GALLIUM COMPOUNDS
HEAVY NUCLEI
ION SOURCES
ISOTOPES
KEV RANGE
MEASURING INSTRUMENTS
METALS
NONDESTRUCTIVE ANALYSIS
NUCLEI
ODD-EVEN NUCLEI
PARTICLE SOURCES
PNICTIDES
RADIATION DETECTION
RADIATION DETECTORS
RADIATION SOURCES
RADIOISOTOPES
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
664200 - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)
440100 - Radiation Instrumentation