Electroluminescence AC powder displays based upon ZnS:Tm, Li

A. Boudghene Stambouli, S. Hamzaoui, M. Bouderbala and O. Kaid Omar

Applied Energy, 1999, vol. 64, issue 1-4, 207-213

Abstract: The preparation and characterisation of an inorganic blue-emitting alternate-current electrolumenescent (ACEL) cell based upon ZnS:Tm, Li phosphor powder are described. Electroluminescent and photoluminescent spectra clearly show a dominant blue-emission band peaking at 2.6 eV (477 nm) originated from 1G4-->3H6 transition. Advantages and drawbacks of the powder-based ACEL cell have been discussed in comparison with a ACEL thin-film based upon a similar material. The near-infra-red band (801 nm, 1.55 eV, 3F4-->3H6) seen in thin-film structure was significantly suppressed in these types of devices.

Keywords: Luminescence; Optical; properties; Phosphorus; X-ray; diffraction (search for similar items in EconPapers)
Date: 1999
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