Bulletin of the Chemical Society of Japan p. 1241 - 1245 (1996)
Update date:2022-08-11
Topics:
Saito, Nobuhiro
Kudo, Akihiko
Sakata, Tadayoshi
A simple and new synthetic method of tungstate thin films (CaWO4, MgWO4, PbWO4, ZnWO4) was developed. The absorption and luminescence spectra of tungstate thin films synthesized on quartz substrates were measured; the optical properties were also studied. It was found that CaWO4 has Eg = 5.4 eV of a direct transition nature. Tungstate thin films were strongly luminescent when irradiated with UV-light. Excitation at around 290 nm was interpreted as a singlet-triplet transition.
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