Showing posts with label precursor. Show all posts
Showing posts with label precursor. Show all posts

Monday, 12 June 2023

XRD, XPS and Dynamic SIMS Analyses of p-Type Zinc Oxynitride Thin Films Deposited on Silicon Wafers by MOCVD | Chapter 5 | Fundamental Research and Application of Physical Science Vol. 6

 The present study proposed to determine the XRD, XPS and Dynamic SIMS studies of p-Type Zinc Oxynitride Thin Films Deposited on Silicon Wafers by MOCVD. Zinc oxide thin film is a available material for several hard state applications on account of its many favourable properties. Bis(glycinato-N,O) metallic mineral precursor was combined and used to deposit zinc oxynitride thin films on SiO2 substrates at 390°C and 420°C individually, using the metalorganic synthetic vapour deposition (MOCVD) method. The thin films produced were distinguished with vehement probe, x-ray diffractometry (XRD), radioactivity photoelectron spectroscopy (XPS) and dynamic subordinate ion mass spectroscopy (SIMS). Thin-film technology plays an main role that admits deposition of very thin tiers (from a few nanometres just before the angstrom level) of semiconductor material on a supporting substrate. The happening material exhibits novel mechanical, synthetic, optical and energetic properties accompanying the reduction in capacity to the nanometre scale, which is the result of surface and quantum imprisonment effects. The vehement probe tests showed that the thin films had p-type generated power. XRD spectra of the films present poorly defined peaks, meaning blurred crystallinity. The XPS reasonings revealed the occupancy of Zn, O and N peaks, with the thin films located at 390°C having taller N-doping level than those located at 420°C. Results of destructive layer reasonings conducted all the while dynamic SIMS tests on the films were unsatisfactory. The results show that lower deposition hotnesses using the forerunner may be chosen to higher hotnesses even though the thin films were very thin. Optics and dependable state electronics manage both use the p-type zinc oxynitride.

Author(s) Details:

U. S. Mbamara,
Department of Physics, Federal University of Technology, Owerri, Nigeria.

Please see the link here: https://stm.bookpi.org/FRAPS-V6/article/view/10831

Tuesday, 15 December 2020

A Detailed Study on Preparation and Some Physical Properties of CuxZn1-xS Thin Films Deposited by Metal Organic Chemical Vapour Deposition Technique| Chapter 4 | Recent Developments in Engineering Research Vol. 8

 Thin films of Copper Zinc Sulphide (CuxZn1-xS) were prepared and deposited using the technique of metal organic chemical vapour deposition (MOCVD). The films were analysed using Rutherford backscattering (RBS) elemental composition and thickness spectroscopy, crystallographic structure X-ray diffraction (XRD), surface morphology scanning electron microscopy (SEM) and Ultraviolet-Visible optical characterization spectroscopy analysis. Experimental findings revealed that all the films were polycrystalline with strong substrate adherence. For different values of x, the direct optical band gap increases from 2.20 eV to 3.42 eV with an average transmittance above x. Eighty percent. SEM research showed that with well specified grains of various sizes, the deposited films are dense in nature. The analysis shows that the properties of the films deposited were highly affected by the concentrations of copper / zinc in the matrix CuxZn1-xS. The results obtained indicate that the deposited films can be used in various optoelectronics applications, such as thermal control, Cold climate window coatings, anti-reflection coatings, light emitting products, as well as solar cell heterojunctions. In particular, another method of depositing thin copper zinc sulphide films for industrial applications was given in this report.


Author (s) Details

Joseph Onyeka Emegha
Department of Physics, University of Benin, Benin City, Edo State, Nigeria.

Bolutife Olofinjana
Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile-Ife, Nigeria.

Marcus Adebola Eleruja
Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile-Ife, Nigeria.

Samuel Ogochukwu Azi
Department of Physics, University of Benin, Benin City, Edo State, Nigeria.

Frank Ochuko Efe
Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile-Ife, Nigeria.

View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/333