Positron lifetime measurements on neutron‐irradiated InP crystals

6533b870fe1ef96bd12d07c4

RESEARCH PRODUCT

Positron lifetime measurements on neutron‐irradiated InP crystals

Bernabé Marí F.j. Navarro Laura Cristina Damonte J.l. Ferrero

subject

Materials science Physics::Instrumentation and Detectors Physics::Medical Physics Analytical chemistry General Physics and Astronomy chemistry.chemical_element Defect Structure Monocrystals Spectral line Condensed Matter::Materials Science :FÍSICA [UNESCO]Vacancy defect Neutron Irradiation Indium Phosphides ; Radiation Effects ; Thermal Neutrons ; Monocrystals ; Positron Probes ; Lifetime ; Defect Structure Exponential decay Positron Probes Doping Radiochemistry UNESCO::FÍSICA Neutron temperature Radiation Effects chemistry Indium Phosphides Thermal Neutrons Lifetime Indium

description

Neutron‐irradiated InP single crystals have been investigated by positron‐lifetime measurements. The samples were irradiated with thermal neutrons at different fluences yielding concentrations for Sn‐transmuted atoms between 2×1015 and 2×1018 cm−3. The lifetime spectra have been analyzed into one exponential decay component. The mean lifetimes show a monotonous increase with the irradiation dose from 246 to 282 ps. The increase in the lifetime has been associated to a defect containing an Indium vacancy. Thermal annealing at 550 °C reduces the lifetime until values closed to those obtained for the as‐grown and conventionally doped InP crystals. navarrof@evalvx.ific.uv.es ; Jose.Ferrero@uv.es

year	journal	country	edition	language
1996-06-15	Journal of Applied Physics

https://doi.org/10.1063/1.362637

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