Thin film cadmium telluride charged particle sensors for large area neutron detectors
- Flexible Display Center, Arizona State University, Phoenix, Arizona 85284 (United States)
- Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Mexico City 07738 (Mexico)
- Universidad Autónoma de la Ciudad de México, Mexico City 09790 (Mexico)
Thin film semiconductor neutron detectors are an attractive candidate to replace {sup 3}He neutron detectors, due to the possibility of low cost manufacturing and the potential for large areas. Polycrystalline CdTe is found to be an excellent material for thin film charged particle detectors—an integral component of a thin film neutron detector. The devices presented here are characterized in terms of their response to alpha and gamma radiation. Individual alpha particles are detected with an intrinsic efficiency of >80%, while the devices are largely insensitive to gamma rays, which is desirable so that the detector does not give false positive counts from gamma rays. The capacitance-voltage behavior of the devices is studied and correlated to the response due to alpha radiation. When coupled with a boron-based neutron converting material, the CdTe detectors are capable of detecting thermal neutrons.
- OSTI ID:
- 22303513
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALPHA PARTICLES
BORON
CADMIUM
CADMIUM TELLURIDES
CAPACITANCE
CDTE SEMICONDUCTOR DETECTORS
ELECTRIC POTENTIAL
EQUIPMENT
GAMMA RADIATION
HELIUM 3
MANUFACTURING
NEUTRON DETECTORS
POLYCRYSTALS
SEMICONDUCTOR MATERIALS
SENSORS
THERMAL NEUTRONS
THIN FILMS