Current-controlled electroluminescence from light-emitting diodes based on Tm, Er, and Eu codoped Ga2O3 thin films. (1st August 2022)

• Record Type: Journal Article
• Authors: Huang, Yafei; Deng, Gaofeng; Saito, Katsuhiko; Tanaka, Tooru; Guo, Qixin
• Is Part Of: Applied physics express. Volume 15:Number 8(2022)
• Publication Date: 2022-08-01
• Subjects: codoping -- color tunable electroluminescence -- rare-earth doped Ga2O3 -- light-emitting diodes; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ac851d
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: In this work, we report on the demonstration of an LED based on Tm, Er, and Eu codoped Ga2 O3 thin film. Current-controlled electroluminescence (EL) has been observed from the Ga2 O3 :(Tm+Er+Eu)-based LED with a relatively low driven voltage of ∼9 V. The EL spectra reveal that the observed light emission results from the combination of simultaneous blue, green, and red emissions from Tm 3+, Er 3+, and Eu 3+ ions, respectively. This strategy for LED shows great potential to achieve full color (white light) by intentionally changing the concentrations of Tm 3+, Er 3+, and Eu 3+ ions in Ga2 O3 without using any other phosphors.