Green emission from c-axis oriented AlN nanorods doped with Tb

Liu, Q.L.; Tanaka, T.; Hu, J.Q.; Xu, F.F.; Sekiguchi, T.
December 2003
Applied Physics Letters;12/15/2003, Vol. 83 Issue 24, p4939
Academic Journal
Green emission has been obtained from c-axis oriented aluminum nitride (AlN) nanorods doped with terbium (Tb) on silicon (111). The nanorods were prepared by reactive radio-frequency magnetron sputtering in argon and nitrogen atmosphere using a target of Al and TbN mixtures, and characterized by x-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The sharp characteristic emission lines observed in the photoluminescence and cathodoluminescence (CL) spectra at room temperature correspond to the Tb[sup 3+] intra-4f[sup n] shell transitions. The monochromatic (wavelength=554 nm) CL images with the high spatial resolution directly show the green emission from the well-aligned nanorods. © 2003 American Institute of Physics.


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