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

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http://hdl.handle.net/10138/329685

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Rosa , J , Heikkilä , M J , Sirkia , M & Merdes , S 2021 , ' Red Y2O3 : Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications ' , Materials , vol. 14 , no. 6 , 1505 . https://doi.org/10.3390/ma14061505

Title: Red Y2O3 : Eu-Based Electroluminescent Device Prepared by Atomic Layer Deposition for Transparent Display Applications
Author: Rosa, Jose; Heikkilä, Mikko J.; Sirkia, Mika; Merdes, Saoussen
Contributor organization: Department of Chemistry
Date: 2021-03
Language: eng
Number of pages: 10
Belongs to series: Materials
ISSN: 1996-1944
DOI: https://doi.org/10.3390/ma14061505
URI: http://hdl.handle.net/10138/329685
Abstract: Y2O3: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 degrees 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/m(2) at a driving frequency of 1 kHz and an efficiency of 0.28 Lm/W were achieved.
Subject: Y2O3
Eu
phosphor
photoluminescence
electroluminescence
atomic layer deposition
114 Physical sciences
116 Chemical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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