Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Optical spectra and electron–Hole liquid in diamond
Ist Teil von
Optics and spectroscopy, 2015-12, Vol.119 (6), p.918-923
Ort / Verlag
Moscow: Pleiades Publishing
Erscheinungsjahr
2015
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Optical absorption spectra in the spectral range from 200 nm to 15 μm, Raman spectra in the wavenumber range of 100–3700 cm
–1
, and photoluminescence spectra in the spectral range of 200–850 nm have been studied for five nominally “pure” diamond samples synthesized in different ways. The measurements have been carried out in the temperature range of 80–300 K. Photoluminescence was excited by the KrCl laser radiation at a wavelength of 222 nm with a pulse FWHM of 8 ns and a peak intensity on the sample surface of up to 13 MW/cm
2
. It is found that, at absorption coefficients of diamond samples below 10 cm
–1
in the spectral range of 225–226 nm, their photoluminescence spectra exhibit a radiative recombination band of electron–hole liquid peaked at 240 nm.