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Arsenic-doped isotopic 74 Ge nanocrystals (nc- 74 Ge) embedded in amorphous SiO 2 films were prepared by neutron transmutation doping (NTD) and the influence of the As additive on the optical properties of the samples was investigated. The optical results showed that the original nc- 74 Ge photoluminescence (PL) (∼620nm) blue-shift and PL quenching could be seen by...
Samples of nanocrystalline 74 Ge embedded in amorphous SiO 2 film were prepared by 74 Ge ion implantation and subsequent primary thermal annealing. These samples were irradiated by neutron flux in a nuclear reactor then the second annealing followed. Irradiation with thermal neutrons leads to doping of nanocrystalline 74 Ge with As impurities due to nuclear transmutation...
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