Bright white-light electroluminescence based on nonradiative energy transfer in Ce- and Eu-doped SrS thin films

Tanaka, Shosaku; Yoshiyama, Hideki; Nishiura, Junichi; Ohshio, Shozo; Kawakami, Hiroyuki; Kobayashi, Hiroshi
November 1987
Applied Physics Letters;11/23/1987, Vol. 51 Issue 21, p1661
Academic Journal
A bright white-light electroluminescence (EL) is obtained in a thin-film EL device with Ce- and Eu-doped SrS phosphors. The device shows a luminance level of 1500 cd/m2 with 5 kHz drive (500 cd/m2 at 1 kHz). The dominant excitation process of the Eu2+ centers is found to be due to an efficient nonradiative energy transfer from the Ce3+ to the Eu2+ centers.


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