Abstract
Highly oriented zinc oxide (ZnO) films accompanied by stimulated emission have been fabricated on amorphous alkaline earth boro-aluminosilicate glass substrates by atomic layer deposition (ALD). By introducing a buffer layer which was deposited at a high temperature of and followed by postdeposition rapid thermal annealing at , ZnO films with the (0001) preferred orientation could be grown by ALD upon the buffer layer at a low temperature of . Photoluminescence exhibited a dominant near-band-edge spontaneous emission at 380 nm and a negligible defect-related band. Optically pumped stimulated emission around 395 nm with a threshold intensity of was observed at room temperature, which is ascribed to the good optical and crystal quality of the ZnO films grown by the ALD technique on the amorphous glass substrates.
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