Photoluminescent properties of Al₂O₃ films containing gold nanoparticles, which are prepared by pulse laser deposition

• Published in: Semiconductor Physics Quantum Electronics & Optoelectronics
• Date: 2009
• Main Authors: Kaganovich, E.B., Kizyak, I.M., Kudryavtsev, A.A., Manoilov, E.G.
• Format: Article
• Language: English
• Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2009
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/118681
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Photoluminescent properties of Al₂O₃ films containing gold nanoparticles, which are prepared by pulse laser deposition / E.B. Kaganovich, I.M. Kizyak, A.A. Kudryavtsev, E.G. Manoilov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2009. — Т. 12, № 2. — С. 165-169. — Бібліогр.: 16 назв. — англ.

Photoluminescent porous films of aluminum oxide containing gold
 nanoparticles were prepared using pulse laser deposition from backward flow of particles
 from erosion torch. Measurements of time-resolved photoluminescence spectra revealed
 high intense photoluminescent band with the peak close to 2.4 eV and its low-energy
 shoulder at 1.6 - 1.7 eV, high-energy shoulder at 2.9 eV, with relaxation times up to
 several microseconds. Studied were the influence of formation conditions and gold
 concentrations in the target on photoluminescent properties of films. The nature of
 photoluminescence related with radiative recombination of electrons and holes in Au
 nanoparticles as well as local centers in Al₂O₃ matrix is discussed.