Dissertation > Excellent graduate degree dissertation topics show

Deposition and Characteristics of ZnO Film by Ultrasonic Spray Pyrolysis Method

Author: WangShiKai
Tutor: JiangZuoYan
School: Dalian University of Technology
Course: Materials Science
Keywords: ZnO film ultrasonic spray pyrolysis(USP) crystal structure morphology visible light transmittance
CLC:
Type: Master's thesis
Year: 2011
Downloads: 5
Quote: 0
Read: Download Dissertation

Abstract


In this paper，the basic properties and applications of ZnO thin films are introduced,andthe various growth techniques, its theory and the up-to-date progresses in the research aboutZnO thin films are reviewed. We paid special attention to its potential application in energysaving coating glasses and thin-film solar cells with textured structure.ZnO thin films were grown on the heated glass substrate by ultrasonic spray pyrolysismethod, zinc nitrate solution was used as the precursor material. The X-ray Diffraction (XRD),Scanning Electron Microscopy (SEM) and UV-Vis Spectrometer were employed to analyzethe crystal structure,morphology and optical property of the thin films. The effects of growsparameters on quality of ZnO thin films,such as precursor solutions concentration, substratetemperature deposition time and armealing schedule are discussed. The results show that thesubstrate temperature solution concentration and armealing temperature play a critical role inthe film deposition. Samples that prepared from0.3M precursor solutions have the densesmooth and homogenous structure and exihibit the preferential orientation of (002) to thesubstrate surface when deposited in the temperature around500℃with one hour armealingtreatment at the temperature of500℃. The optical tests of these thin films shows that thedense smooth and homogenous microstructure also have a positive effect on the film visiablelight transmitance performances. The films grown in the above condition could reach thevisible light transmittance as high as90%.But when the films are annealed at600℃, theyhave the highest preferential orientation of (002) to the substrate surface while the visiblelight transmittance declines to80%,perhaps due to the increase of the oxygen vacancies.

Related Dissertations

  1. Tongue Feature Extraction and Research of Fusion Classification,TP391.41
  2. The Properties of Laser Speckle Based on the Mathematical Morphology,O29
  3. Urothermal Synthesis, Structure and Characterization of Functional Coordination Polymers,O631.3
  4. Road extraction algorithm based on region segmentation of remote sensing image,TP751
  5. Research of Anomaly Detection Algorithms of Hyperspectral Imagery Based on Kernel Method,TP751
  6. Effects of Nitrogen Fertilizer on Morphological Development of Alfalfa Root,S541.9
  7. Studies on Leaf Epidermal and Pollen Micro-morphology and Geographical Distribution of the Genus Euonymus of Henan,Q944
  8. Sagitta Morephology, Distribution, Biology and Stock Assessment of Four Prlagic Species in the Mouth of Beibu Gulf,S932.4
  9. Technology of Blood Vessel Diameter Measurement Automatic Based on Digital Image Processing,R310
  10. The Evolvement of Quartzs and Phytoliths in Basalt-Derived Chronosequence Soils in Tropics Area of China,S153
  11. Study on the Morphology, Physiology and QTLS Mapping of a Dwarf Mutant Ari1327 from Cotton (Gossypium Hirsutum L.),S562
  12. Physiological Functional Identification of Rice Phosphate Transporter OsPT4,S511
  13. Studies on Aphid Resistance Identification, Resistance Related Mechanisms and LLA Gene Transformation of Cut Chrysanthemum,S682.11
  14. The Application of Ant Colony Algorithm in Meteorological Satellite Cloud Pictures Segmentation,TP391.41
  15. Synthesis and Structures of Metal (Mn, Zn and Sn) Complexes Incorporating with the Sily-linded Bis (Amidinate) Ligands,O621.2
  16. Genotypic Variation for Root Morpha and Potassium Accumulation in Maize Inbred Lines under Potassium Stress Condition,S513
  17. Cationic Microemulsion-mediated Synthesis of MFI Zeolite,TQ424.25
  18. Implanted in mouse endometrium during early morphological and Galectin-3, expression of integrin α4,R321
  19. More than enough calcium and magnesium metal ligand complexes Synthesis, Structural Characterization and Antibacterial Activity,O641.4
  20. Arsenic and antimony chalcogenides Solvothermal Synthesis and Characterization,O641.4
  21. Aza- β- diimine complexes and hypophosphorous acid synthesis and structural characterization,O627.51

CLC: >
© 2012 www.DissertationTopic.Net  Mobile