Evaluation of the optical characteristics of c-axis oriented zinc oxide thin films grown by sol gel spin coating technique

7th National Conference on Processing and Characterization of Materials

Baisakh, K.^1 ; Behera, S.^1 ; Pati, S.^2

Department of Physics, School of Applied Science, CUTM, Bhubaneswar

752050, India^1

Department of Physics, N. C. (Auto.) College, Jajpur

755001, India^2

关键词: Absorption co-efficient;    Crystal texture;    Crystallographic orientations;    Envelope method;    Extinction coefficients;    Field emission scanning electron microscopy;    Optical characteristics;    Zinc oxide thin films;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/338/1/012044/pdf
DOI  :  10.1088/1757-899X/338/1/012044

来源: IOP

【 摘 要 】

In this work we have systematically studied the optical characteristics of synthesized wurzite zinc oxide thin films exhibiting (002) orientation. Using sol gel spin coating technique zinc oxide thin films are grown on pre cleaned fused quartz substrates. Structural properties of the films are studied using X-ray diffraction analysis. Micro structural analysis and thickness of the grown samples are analyzed using field emission scanning electron microscopy. With an aim to investigate the optical characteristics of the grown zinc oxide thin films the transmission and reflection spectra are evaluated in the ultraviolet-visible (UV-VIS) range. Using envelope method, the refractive index, extinction coefficient, absorption coefficient, band gap energy and the thickness of the synthesized films are estimated from the recorded UV-VIS spectra. An attempt has also been made to study the influence of crystallographic orientation on the optical characteristics of the grown films.