Transparent and Flexible Thin Film Electroluminescent Devices Using HiTUS Deposition and Laser Processing Fabrication

TSAKONAS, Costas, WAKEHAM, Steve, CRANTON, Wayne M., THWAITES, Mike, BOUTAUD, Gabriel, FARROW, Carly, KOUTSOGEORGIS, Demosthenes C. and RANSON, Robert (2015). Transparent and Flexible Thin Film Electroluminescent Devices Using HiTUS Deposition and Laser Processing Fabrication. IEEE Journal of the Electron Devices Society, 4 (1), 22-29.

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Link to published version:: 10.1109/JEDS.2015.2497086

Abstract

Highly transparent thin film electroluminescent structures offering excellent switch on characteristics, high luminance and large break-down voltages have been deposited onto glass and flexible polymeric materials with no substrate heating using high target utilization sputtering. Deposition of ZnS:Mn as the active light emitting layer and Y2O3, Al2O3, Ta2O5, and HfO2 as dielectric materials arranged in single and multiple layer configurations were investigated. Devices incorporating Al2O3, HfO2 quadruple layers demonstrate the highest attainable luminance at low threshold voltage. Single pulse excimer laser irradiation of the phosphor layer prior to deposition of the top dielectric layer enhanced the luminance of the devices. The devices fabricated on glass and polymeric substrates exhibited a maximum luminance of 500 and 450 cdm−2 when driven at 270 VRMS and 220 VRMS, respectively, with a 1.0 kHz sine wave.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1109/JEDS.2015.2497086
Depositing User: Wayne Cranton
Date Deposited: 22 Feb 2016 10:16
Last Modified: 07 Dec 2016 19:24
URI: http://shura.shu.ac.uk/id/eprint/11549

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