Optical properties of nanocluster-assembled ZnO thin films by nanocluster-beam deposition

Z. W. Zhao; B. K. Tay; J. S. Chen; J. F. Hu; X. W. Sun; S. T. Tan

doi:10.1063/1.2149170

Optical properties of nanocluster-assembled ZnO thin films by nanocluster-beam deposition

Z. W. Zhao, B. K. Tay^*, J. S. Chen, J. F. Hu, X. W. Sun, S. T. Tan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

Nanocluster-assembled ZnO thin films have been synthesized by nanocluster-beam deposition, and the films exhibit a band-gap energy at 323.7 nm (3.84 eV) and ultraviolet (UV) light emission at 373 nm (3.32 eV) with an average particle size of 6 nm. A comparison of the optical properties of the annealed films with that of as-grown one is presented. It is found that, after the film is annealed, the shoulder in the absorbance spectra turns steeper and the intensity of UV light emission band becomes stronger. Moreover, blueshifts of band-gap energy and a UV emission band are both observed as decreasing the annealing temperature and ascribed to the quantum-confinement effect.

Original language	English
Article number	251912
Journal	Applied Physics Letters
Volume	87
Issue number	25
DOIs	https://doi.org/10.1063/1.2149170
Publication status	Published - 2005
Externally published	Yes

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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title = "Optical properties of nanocluster-assembled ZnO thin films by nanocluster-beam deposition",

abstract = "Nanocluster-assembled ZnO thin films have been synthesized by nanocluster-beam deposition, and the films exhibit a band-gap energy at 323.7 nm (3.84 eV) and ultraviolet (UV) light emission at 373 nm (3.32 eV) with an average particle size of 6 nm. A comparison of the optical properties of the annealed films with that of as-grown one is presented. It is found that, after the film is annealed, the shoulder in the absorbance spectra turns steeper and the intensity of UV light emission band becomes stronger. Moreover, blueshifts of band-gap energy and a UV emission band are both observed as decreasing the annealing temperature and ascribed to the quantum-confinement effect.",

author = "Zhao, {Z. W.} and Tay, {B. K.} and Chen, {J. S.} and Hu, {J. F.} and Sun, {X. W.} and Tan, {S. T.}",

year = "2005",

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volume = "87",

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T1 - Optical properties of nanocluster-assembled ZnO thin films by nanocluster-beam deposition

AU - Zhao, Z. W.

AU - Tay, B. K.

AU - Chen, J. S.

AU - Hu, J. F.

AU - Sun, X. W.

AU - Tan, S. T.

PY - 2005

Y1 - 2005

N2 - Nanocluster-assembled ZnO thin films have been synthesized by nanocluster-beam deposition, and the films exhibit a band-gap energy at 323.7 nm (3.84 eV) and ultraviolet (UV) light emission at 373 nm (3.32 eV) with an average particle size of 6 nm. A comparison of the optical properties of the annealed films with that of as-grown one is presented. It is found that, after the film is annealed, the shoulder in the absorbance spectra turns steeper and the intensity of UV light emission band becomes stronger. Moreover, blueshifts of band-gap energy and a UV emission band are both observed as decreasing the annealing temperature and ascribed to the quantum-confinement effect.

AB - Nanocluster-assembled ZnO thin films have been synthesized by nanocluster-beam deposition, and the films exhibit a band-gap energy at 323.7 nm (3.84 eV) and ultraviolet (UV) light emission at 373 nm (3.32 eV) with an average particle size of 6 nm. A comparison of the optical properties of the annealed films with that of as-grown one is presented. It is found that, after the film is annealed, the shoulder in the absorbance spectra turns steeper and the intensity of UV light emission band becomes stronger. Moreover, blueshifts of band-gap energy and a UV emission band are both observed as decreasing the annealing temperature and ascribed to the quantum-confinement effect.

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Optical properties of nanocluster-assembled ZnO thin films by nanocluster-beam deposition

Abstract

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