Work

Current-controlled electroluminescence from light-emitting diodes based on Tm, Er, and Eu codoped Ga2O3 thin films

Year: 2022

Type: article

Abstract: In this work, we report on the demonstration of an LED based on Tm, Er, and Eu codoped Ga2O3 thin film. Current-controlled electroluminescence (EL) has been observed from the Ga2O3:(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 Tm3+, Er3+, and Eu3+ ions, respectively. This strategy for LED shows great potential to achieve full color (white light) by intentionally changing the concentrations of Tm3+, Er3+, and Eu3+ ions in Ga2O3 without using any other phosphors.

Source: Applied Physics Express

DOI: 10.35848/1882-0786/ac851d

Authors: Yafei Huang, Gaofeng Deng, Katsuhiko Saito, Tooru Tanaka, Qixin Guo

Institution: Saga University

Language: English

Topic: Luminescence Properties of Advanced Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funder: Japan Society for the Promotion of Science

Award: Development of High Color Rendering White LEDs Based on Rare-Earth Co-Doped Oxide Semiconductors