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Journal of Materials Science: Materials in Electronics

Erschienen in:

03.02.2018

Effect of co-doped Tb³⁺ ions on electroluminescence of ZnO:Eu³⁺ LED

verfasst von: Miaoling Huang, Shenwei Wang, Guangmiao Wan, Xinwu Zhang, Yanwei Zhang, Kai Ou, Lixin Yi

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 9/2018

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Abstract

Rare earth (RE) -doped ZnO electroluminescence is worthy of investigation for phosphor-free white light-emitting diodes (LEDs) due to their pure and sharp emissions. Whereas, the low solubility of RE ions in ZnO films is found to hinder the performance of RE-doped ZnO devices. Herein, ZnO:Eu and ZnO:Eu/Tb LEDs were synthesized and the electroluminescence properties were tested. The results show that the emission intensity of ZnO: Eu/Tb LED is 8 times higher than that of ZnO: Eu LED while the input power is smaller when the concentration of terbium is proper. Furthermore, we discussed the excitation mechanism and found that the ratio of the EL intensity of the ⁵D₁ → ⁷F₁ to ⁵D₀ → ⁷F_{J (J=0 − 4)} transition increases with increasing Tb doping concentration, which may indicate the possibility of energy transfer from Tb³⁺ to Eu³⁺. The results are believed to be an effective strategy to improve the electroluminescence of RE-doped semiconductor for white LEDs.

Vorheriger Artikel Luminescence properties and energy transfer of co-doped Ba3GdNa(PO4)3F:Ce3+,Tb3+ green-emitting phosphors

Nächster Artikel Synthesis and luminescent characteristics of green-emitting (Sr1−xMx)2SiO4:Tb3+ (M = Ba, Ca) phosphors

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Titel: Effect of co-doped Tb3+ ions on electroluminescence of ZnO:Eu3+ LED
verfasst von: Miaoling Huang
Shenwei Wang
Guangmiao Wan
Xinwu Zhang
Yanwei Zhang
Kai Ou
Lixin Yi
Publikationsdatum: 03.02.2018
Verlag: Springer US
Erschienen in: Journal of Materials Science: Materials in Electronics / Ausgabe 9/2018
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-018-8709-9

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