Recombination radiation in synthetic and natural diamonds exposed to pulsed UV laser radiation E. I. Lipatov, D. E. Genin, V. F. Tarasenko
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ArticleSubject(s): люминесценция | ультрафиолетовое излучение | экситоны | электронно-дырочная жидкость | алмазыGenre/Form: статьи в журналах Online resources: Click here to access online
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Russian physics journal Vol. 58, № 7. P. 911-922Abstract: Photoluminescence of two diamond samples excited by radiation of a KrCl laser with a spectral maximum at the wavelength λ ~ 222 nm is investigated. Radiative recombination bands of free excitons and electron-hole liquid are simultaneously observed in the integrated difference photoluminescence spectra of a diamond sample synthesized by chemical vapor deposition method during cooling by liquid nitrogen. The N3 electronic vibrational system and the band-A of luminescence are observed in the integrated difference photoluminescence spectra of a natural sample of diamond of IIa type under analogous conditions. Temperature dependences of the spectral intensity of photoluminescence bands of diamond samples in the temperature range T = 80–300 K are determined.
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Photoluminescence of two diamond samples excited by radiation of a KrCl laser with a spectral maximum at the wavelength λ ~ 222 nm is investigated. Radiative recombination bands of free excitons and electron-hole liquid are simultaneously observed in the integrated difference photoluminescence spectra of a diamond sample synthesized by chemical vapor deposition method during cooling by liquid nitrogen. The N3 electronic vibrational system and the band-A of luminescence are observed in the integrated difference photoluminescence spectra of a natural sample of diamond of IIa type under analogous conditions. Temperature dependences of the spectral intensity of photoluminescence bands of diamond samples in the temperature range T = 80–300 K are determined.
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