Effect of Mg codoping on Eu3+ luminescence in GaN grown by ammonia molecular beam epitaxy

Y Takagi, T Suwa, H Sekiguchi, H Okada… - Applied Physics …, 2011 - pubs.aip.org
The effect of Mg codoping on the Eu 3+ luminescence in GaN was investigated by
photoluminescence measurements. Two notable emission peaks associated with the 5 D
0→ 7 F 2 transition in the Eu 3+ ions were governed by Mg codopants, which corresponded
to the change of the dominant peak wavelength from 622.3 to 620.3 nm with an increase in
Mg concentration. An optimal amount of Mg also led to enhancement of approximately 20
times of the Eu 3+ luminescence. These results indicated that the Mg codopants selectively …
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