Journal
APPLIED PHYSICS EXPRESS
Volume 15, Issue 8, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1882-0786/ac851d
Keywords
codoping; color tunable electroluminescence; rare-earth doped Ga2O3; light-emitting diodes
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Funding
- Partnership Project for Fundamental Technology Researches of the Ministry of Education, Culture, Sports, Science, and Technology, Japan
- Japan Society for the Promotion of Science (JSPS) [22K04188]
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In this study, we demonstrated an LED based on Tm, Er, and Eu codoped Ga2O3 thin film. By intentionally changing the concentrations of Tm3+, Er3+, and Eu3+ ions, we achieved simultaneous emission of blue, green, and red light, showing great potential for full-color light emission.
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 similar to 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.
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