Band-Gap Assignment in Sn O 2 by Two-Photon Spectroscopy
1978; American Physical Society; Volume: 41; Issue: 25 Linguagem: Inglês
10.1103/physrevlett.41.1750
ISSN1092-0145
AutoresD. Fröhlich, R. Kenklies, R. Helbig,
Tópico(s)Electrochemical Analysis and Applications
ResumoWe present for the first time two-photon measurements on rutile Sn${\mathrm{O}}_{2}$. The detailed polarization analysis yields ${{\ensuremath{\Gamma}}_{3}}^{+}$ symmetry for the direct forbidden $1S$ exciton and the upper valence band. Our results clear up the long-standing controversy concerning the symmetry of the upper valence band.
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