UV Luminescence and Lasing in Ensembles of Zinc-Oxide Microcrystals with Copper

• Published in: Optics and spectroscopy Vol. 125; no. 4; pp. 522 - 527
• Main Authors: Opolchentsev, A. M., Zadorozhnaya, L. A., Briskina, Ch. M., Markushev, V. M., Tarasov, A. P., Muslimov, A. E., Kanevskii, V. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-10-2018; Springer Nature B.V
• Subjects: Arrays; Blue shift; Chemical vapor deposition; Copper; Lasers; Lasing; Microcrystals; Morphology; Optical Devices; Optics; Organic chemistry; Photoluminescence; Photonics; Physics; Physics and Astronomy; Sapphire; Single crystals; Spectroscopy of Condensed States; Substrates; Zinc oxide; Zinc oxides; Thin Copper Layer; Zinc Oxide Microrods; Zinc Drops; Microrod Arrays; Sapphire Substrate
• ISSN: 0030-400X; 1562-6911
• DOI: 10.1134/S0030400X1810017X

Microrod arrays of zinc oxide with copper have been grown by chemical vapor deposition on single-crystal sapphire substrates preliminarily covered with a nanoscale copper layer. The presence of copper (about 0.3%) in zinc-oxide microrods has been experimentally shown to increase the photoluminescence intensity of the ZnO microcrystal arrays, reduce the lasing threshold, and lead to a small (by ~2.5 nm) blue shift of the radiation intensity peak of the ZnO microcrystals. It is shown that the laser-radiation character depends on the morphology of the ZnO microrod arrays.