HAN Jing-jing, WANG Xiao-dan, XIA Yong-lu etc. Cathodoluminescence of Eu-implanted GaN Thin Films[J]. Chinese Journal of Luminescence, 2018,39(9): 1268-1271
HAN Jing-jing, WANG Xiao-dan, XIA Yong-lu etc. Cathodoluminescence of Eu-implanted GaN Thin Films[J]. Chinese Journal of Luminescence, 2018,39(9): 1268-1271 DOI: 10.3788/fgxb20183909.1268.
GaN thin films were grown on sapphire substrate by MOCVD method. Eu
3+
ions were implanted into GaN thin films by ion implantation. After the films were annealed
the crystal quality was improved partly according to X-ray diffraction measurements. The strong red light emission at 623 nm can be observed in the cathodoluminescence spectrum
and is attributed to the internal 4f transition of Eu
3+
ions. In addition
the charge transfer state is introduced by ion implantation
results in a luminescence peak at 408 nm. It is found that annealing can help to promote the charge transfer state luminescence and Eu ions luminescence. There is an energy transfer from the yellow peak of GaN matrix to the Eu ions.
关键词
氮化镓阴极荧光铕发光能量传递
Keywords
gallium nitridecathodoluminescenceeuropiumluminescenceenergy transfer
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