Abstract
AbstractIn this paper, we report a new type Auger‐free luminescence (AFL) of Rb2ZnCl4 crystals. Until now AFL has been reported in alkali and alkali‐earth halides. This luminescence originates from electon transitions from the valence band of halogen p orbitals to the top of outermost core levels of alkali or alkali‐earth p orbitals (p‐p transitions). On the other hand, the AFL of Rb2ZnCl4 is expected to be of p‐d type, in which the electronic transitions from Cl 3p orbitals are terminated by outermost Zn 3d core levels. The electronic states concerning are apparently different from those of alkali and alkali‐earth halides. The finding of such a peculiar AFL is achieved by comparison between results of spectroscopy experiment and cluster calculation. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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