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- W2149679978 abstract "Many interesting and technologically important defects are generated in silicon when impurities such as nitrogen, oxygen and carbon group together and become electrically active complexes. The series of nitrogen-oxygen donors recently observed in infrared absorption spectra of Czochralski silicon has been studied here for the first time using photoluminescence spectroscopy. These complexes are found to bind excitons and multiexcitonic complexes, with an exciton localization energy of 3.9 meV. Conclusive identification of the exciton binding centers with the nitrogen-oxygen donors seen in absorption is provided by the observation of bound exciton two-electron transitions. These transitions leave the donors in their 2s or 2p+ excited states. Despite the wide use of nitrogen in semiconductor processing, its rate of diffusion in silicon is still a matter of some debate. Recent publications place the diffusion coefficient at 1270'~ at about 2 2 x cm /sec, conflicting with earlier values by five orders of magnitude. The diffusion profile is determined here using the photoluminescence intensity of the nitrogen-oxygen donors. A diffusion 2 coefficient of 1.3 f 0.8 x cm /sec is obtained, in agreement with the recent findings." @default.
- W2149679978 created "2016-06-24" @default.
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- W2149679978 date "1990-01-01" @default.
- W2149679978 modified "2023-09-27" @default.
- W2149679978 title "PHOTOLUMINESCENCE AND INFRARED ABSORPTION SPECTROSCOPY OF NITROGEN-OXYGEN DONORS IN SILICON" @default.
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