The blue luminescence from a self‐trapped exciton (STE) in PbWO4 is studied by means of time‐resolved spectroscopy in the temperature range of 77–300 K. The result clearly reveals that the STE luminescence consists of three bands peaking at 407, 425, and 450 nm. Such a composite nature indicates the importance of the Jahn–Teller effect on the lowest triplet STE states at the tetrahedral (WO4)2− complex anion. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Itoh et al. (2005) studied this question.
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