Red Y2O3:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications

Rosa, José; Heikkilä, Mikko J.; Sirkiä, Mika; Merdes, Saoussen

doi:10.3390/ma14061505

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Red Y₂O₃:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications

¹

Beneq Oy, Olarinluoma 9, FI-02200 Espoo, Finland

²

Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland

^*

Author to whom correspondence should be addressed.

Materials 2021, 14(6), 1505; https://doi.org/10.3390/ma14061505

Submission received: 10 February 2021 / Revised: 15 March 2021 / Accepted: 16 March 2021 / Published: 19 March 2021

(This article belongs to the Special Issue Advanced Luminescent Materials and Devices)

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Abstract

Y₂O_3:Eu is a promising red-emitting phosphor owing to its high luminance efficiency, chemical stability, and non-toxicity. Although Y₂O₃:Eu thin films can be prepared by various deposition methods, most of them require high processing temperatures in order to obtain a crystalline structure. In this work, we report on the fabrication of red Y₂O₃:Eu thin film phosphors and multilayer structure Y₂O₃:Eu-based electroluminescent devices by atomic layer deposition at 300 °C. The structural and optical properties of the phosphor films were investigated using X-ray diffraction and photoluminescence measurements, respectively, whereas the performance of the fabricated device was evaluated using electroluminescence measurements. X-ray diffraction measurements show a polycrystalline structure of the films whereas photoluminescence shows emission above 570 nm. Red electroluminescent devices with a luminance up to 40 cd/m² at a driving frequency of 1 kHz and an efficiency of 0.28 Lm/W were achieved.

Keywords: Y₂O₃:Eu; phosphor; photoluminescence; electroluminescence; atomic layer deposition

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MDPI and ACS Style

Rosa, J.; Heikkilä, M.J.; Sirkiä, M.; Merdes, S. Red Y₂O₃:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications. Materials 2021, 14, 1505. https://doi.org/10.3390/ma14061505

AMA Style

Rosa J, Heikkilä MJ, Sirkiä M, Merdes S. Red Y₂O₃:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications. Materials. 2021; 14(6):1505. https://doi.org/10.3390/ma14061505

Chicago/Turabian Style

Rosa, José, Mikko J. Heikkilä, Mika Sirkiä, and Saoussen Merdes. 2021. "Red Y₂O₃:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications" Materials 14, no. 6: 1505. https://doi.org/10.3390/ma14061505

APA Style

Rosa, J., Heikkilä, M. J., Sirkiä, M., & Merdes, S. (2021). Red Y₂O₃:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications. Materials, 14(6), 1505. https://doi.org/10.3390/ma14061505

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Red Y₂O₃:Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications

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