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Luminescence properties of light-emitting diodes based on GaAs with the up-conversion Y2O2S:Er,Yb luminophor

  • Physics of Semiconductor Devices
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Abstract

Y2O2S luminophors doped with Er3+ and Yb3+ ions are produced by means of solid-phase synthesis and deposited onto standard AL123A infrared light-emitting diodes. When excited with 940 nm radiation from a light-emitting diode, the structures exhibit intense visible up-conversion luminescence. A maximal brightness of 2340 cd/m2 of green and red up-conversion luminescence at corresponding wavelengths around 550 and 600 nm is observed for the Y2O2S compound doped with 2 at % Er3+ ions and 6 at % Yb3+ ions. The ratio of the intensity of green (or red) up-conversion luminescence to the intensity of infrared Stokes luminescence increases with increasing applied voltage. The efficiency of visible emission of the light-emitting diode structures is η = 1.2 lm/W at an applied voltage of 1.5 V.

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Correspondence to A. N. Gruzintsev.

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Original Russian Text © A.N. Gruzintsev, C. Barthou, P. Benalloul, 2008, published in Fizika i Tekhnika Poluprovodnikov, 2008, Vol. 42, No. 3, pp. 365–369.

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Gruzintsev, A.N., Barthou, C. & Benalloul, P. Luminescence properties of light-emitting diodes based on GaAs with the up-conversion Y2O2S:Er,Yb luminophor. Semiconductors 42, 358–362 (2008). https://doi.org/10.1134/S1063782608030226

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  • DOI: https://doi.org/10.1134/S1063782608030226

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