Optical and Structural Properties of Thermally Evaporated Zinc Oxide Thin Films on Polyethylene Terephthalate Substrates

Abstract

Zinc oxide thin films of different thicknesses ranging from 100 to 300 nm were prepared on polyethylene terephthalate substrates with thermal evaporation in a vacuum of approximately3×10-5Torr. X-ray diffraction patterns confirm the proper phase formation of the material. From atomic force microscopy (AFM) images, it was found that the root mean square roughness of the film surface increased as the film thickness increased. The optical properties of ZnO on PET substrates were determined through the optical transmission method using an ultraviolet-visible spectrophotometer. The optical band gap values of ZnO thin films slightly decreased as the film thickness increased.

Evaluation of the Tauc method for optical absorption edge determination: ZnO thin films as a model system

“…As noted above, we collected a large number of published Tauc analyses of undoped ZnO that included plots of the absorbance data against the photon energy . This was critical, as our assessment of the application of the Tauc method required the consistent application of a fitting method, as described below.…”

Template Synthesis and Magnetic Characterization of Feni Nanotubes

“…Electron diffraction pattern allows to make a conclusion that NTs material has a high crystallinity degree and contains separate twinning planes, which arise due to the disorientation of individual [36,37]. Analysis of the X-ray diffraction data shows bcc (body centered cubic) lattice ordering of NTs with lattice parameters a = 2.8616Å, compared with the reference value of a = 2.866Å.…”

Magnetron sputtering technique for analyzing the influence of RF sputtering power on microstructural surface morphology of aluminum thin films deposited on SiO2/Si substrates

“…Furthermore, the interest in Al thin films has been exponentially increased due to depositions have been achieved utilizing a broad spectrum of substrates including mild steels, titanium, stainless steel, silver, silicon (100), polyethylene terephthalate (PET), polycarbonates and glass [2,9]. Al films deposited on substrates are the most commonly utilizes surface coatings for aspheric mirrors, because Al is a good light reflector in the visible region and an extraordinary reflector in the mid and far infrared (IR) regions [10,11]. In addition, other applications of Al thin films in different industrial fields include thin film transistors [12], near-field fiber-optic probes [13], solar cells [14] and flat-panel displays [15].…”