Structure and Properties of ZnO: (Cr, N) Film Prepared by Thermal Oxidation Method
The ZnO: (Cr, N) films were fabricated by annealed Zn3N2: Cr films in flowing O2 ambient, while the Zn3N2: Cr films were deposited on quartz substrates by RF-sputtering of Zn target and DCsputtering of Cr target. The variation of
structure, optical bandgap, and third nonlinear optical properties with a different Cr sputtering power is investigated. X-ray diffraction (XRD) spectra were used to examine the microstructure of the thin films. Optical bandgap of the thin films was determined by UV/Visible spectroscopy. The
third-order nonlinear optical properties were measured by a standard Z-scan device. The analyzed results indicate that the obtained films are of good crystal quality, which have a pure hexagonal wurtzite ZnO structure without any Cr related phases. The optical bandgaps are 3.35 eV and 3.40
eV for Cr sputtering power of 12 W and 16 W, respectively. The TZ-scan experiment and analysis results show that the films are a self-defocusing material with saturation absorption properties. The ZnO: (Cr, N) film have good third-order nonlinear optical properties when the film prepared by
Cr sputtering power is 12 W and annealed temperature was 400 °C.
Keywords: OPTICAL BANDGAP; THIRD-ORDER NONLINEAR OPTICAL PROPERTIES; ZNO: (CR, N) FILMS
Document Type: Short Communication
Publication date: 01 April 2017
- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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