properties of zno thin film

... temperatures on the structural properties of the films has been investigated, and the optical properties of the films have also been analyzed Methods Synthesis ZnS films were deposited onto a Corning ... However, the FWHM value of the film prepared at 400°C increased to 0.154°, indicating the deterioration of the crystallinity of the films The mean crystallite sizes of the films were about 22.3, ... 400°C, the Zn/S ratio of the films also increased to 1.04 This increase can be attributed to the re-evaporation of sulfide from the film surface The film thickness of ZnS films prepared at different...

Ngày tải lên: 20/06/2014, 21:20

... application of RBS is the thickness measurement of thin film, because the width of the peak in the spectrum is proportional to the thickness (t) of the sample (Fig 2.3) once the density of the film ... characterization technique of thin films of Ti1-xTaxO2 PLD technique has been used for the film fabrication X-ray diffraction (XRD) studies have been carried out on the epitaxially grown thin films on STO ... structural properties of titanium dioxide (TiO2) thin films grown by pulsed laser deposition (PLD) technique Single crystal TiO2 and tantalum (Ta) doped TiO2 (Ti1-xTaxO2) thin films of different...

Ngày tải lên: 08/09/2015, 15:20

... images of films formed by anodization (a) Pure WO3 thin film top view; (b) TiO2 doped WO3 (10 at.% Ti) thin film top view; (c) Pure WO3 thin film top view cross section; (d) TiO2 doped WO3 thin film ... images of a plan view of (a) TiO2 doped WO3 film, (b) pure WO3 film, a cross-sectional view of (c) TiO2 doped WO3 film and (d) pure WO3 film Figure 3.2 SEM-EDS spectrum of TiO2 doped WO3 film (a) ... the TiO2 doped WO3 thin film but this time the film is produced by the co-anodization of co-sputtered Ti/W thin film in an organic solution The purpose is to obtain the thin films with different...

Ngày tải lên: 09/09/2015, 11:16

... and coefficients of thermal expansion of amorphous Cu-Zr thin films - 162 7.1 Measurement of Young’s modulus of amorphous Cu-Zr thin films - 162 7.1.1 Analytical model ... The yield stress of a material σTS: The tensile strength of a material E: The Young’s modulus of a material υ: The Poisson’s ratio of a material M: The biaxial modulus of a thin film εm: The mismatch ... between the film and substrate hf: The thickness of the film hs: The thickness of the substrate w: The cantilever width L: The cantilever length r: The radius of curvature of the film- substrate...

Ngày tải lên: 11/09/2015, 09:16

... structural properties of FePt-Ag thin films, the first step is to fabricate the materials Characterization of the thin films provided information about structural and magnetic information of FePt-Ag thin ... fitting of AXS data of 450 nm Ag thin film and 450 nm FePt thin films co-sputtered with 20 vol.% and 30 vol.% Ag 69 Figure 4-15 Fourier transfer of the Fe K edge EXAFS spectra of Fe foil ... fraction 60 Figure 4-5 SEM images of FePt thin film A)without Ag and B)with 20 vol.% Ag 61 Figure 4-6 XPS depth profile of the cosputtered FePt-Ag thin film of 450 nm on MgO substrate ...

Ngày tải lên: 30/09/2015, 06:41

... a ceria free thin film of n layers with the film thickness d Suppose two top and bottom layers (surface layers) of ceria thin film are layers of cerium atoms Fig Ceria free thin film with the ... n of layers of thin film n ≥ 80 the average lattice constant a(T ) and thermal expansion coefficient of thin film (a(T ) ∼ 5.41 A) in agreement with the experimental THERMODYNAMIC PROPERTIES OF ... THERMODYNAMIC PROPERTIES OF CERIA THIN FILM 145 of the thermodynamic quantities have not been studied in detail Temperature and pressure dependences of the thermodynamic and elastic properties of bulk...

Ngày tải lên: 31/10/2015, 10:44

... Resistivity of ZnO: Al thin films with 500 W data offset by 3.2 cm 167 6-8 Resistivity of the deposited ZnO: Al thin film plotted versus thickness 169 6-9(a-b) Carrier concentration of ZnO: Al thin films ... Ambient on the Properties of ZnO: Al 81 3.6.2 Development of Properties in Very Thin ZnO: Al Films 83 3.6.3 Negative Ion Resputtering in Sputter Deposition of ZnO: Al Films 84 AFFECT OF ANNEALING ... 196 6-22(a-b) “Grain size” of the ZnO: Al thin films 198 6-23(a-b) RMS roughness of the ZnO: Al thin films 200 6-24 Resistivity of the ZnO: Al thin film 213 6-25(a-b) Corrected...

Ngày tải lên: 21/12/2016, 11:00

... the PL of graphene thin film, which is an important property for application in optoelectronic devices Fig 2(b) represents the PL spectra of graphene thin films prepared by thermal reduction of GO ... 765–767 767 Fig Current–voltage curves of graphene thin films prepared by thermal reduction of GO sheet resistances of our graphene films prepared by thermal reduction of GO at 600 °C, 700 °C and 800 ... tune the band gap of graphene I–V curves of graphene thin films prepared by thermal reduction of GO at different reduction temperatures are depicted in Fig The In summary, GO thin film was thermally...

Ngày tải lên: 16/12/2017, 04:44

... values of x in Bi1-xRExFeO3 and/or decreasing ionic radii of the rare earth cation [8, 9, 17–18] Recent studies of bulk and thin films of (Bi,RE) FeO3 (RE = Nd, Sm) have revealed a formation of a ... content of each element in the case of thin films due to the fact that it is just most sensitive to the surface of the film but not as the whole However, one can see a slight tendency of deviation ... doped BiFeO3 thin films have reported that all the films of 10% of RE doping show a single phase of rhombohedral structure The saturated magnetization in Ho-, Sm-, and Eu-doped films is much...

Ngày tải lên: 16/12/2017, 14:58

... reflectance patterns of the ZnO films All ZnO films showed different patterns according to the wavelength of incidence rays The ZnO film with a 0° growth angle has the lowest reflectance of 10.81% at ... of electrodeposited ZnO thin films Thin Solid Films 2008, 516:3893-3898 Bragg WL, Bragg WH: The Crystalline State New York: McMillan; 1933 15 30 o Growth angle ( ) Figure Reflectance of ZnO films ... thickness of the ZnO thin films was checked by FE-SEM and was fixed at 100 nm Three growth angles (0°, 15°, and 30°) of the columnar ZnO films were carefully selected The intensities of the main...

Ngày tải lên: 21/06/2014, 17:20

... roughness and evaluated mechanical properties of ZnO thin films and bulk materials (S.-R Jian* et al.) ZnO fiilm/sapphire ZnO film/c-sapphire ZnO films/(0001) 6H-SiC ZnO films ZnO (bulk) 4.1 nm* Ra 2.3 nm* ... effects of substrates on mechanical properties of thin films/substrates systems Experimental Details The Growth Conditions of ZnO Thin Films ZnO thin films were grown on (0001) (c-oriented), ð1120Þ ... to the ZnO thin films, in merit of both basic research and technological applications In addition, nanoscratch technique can be used to characterize the nanotribological properties of ZnO thin films...

Ngày tải lên: 22/06/2014, 01:20

Ngày tải lên: 14/03/2014, 13:20

Ngày tải lên: 21/07/2014, 16:21

... on mechanical properties of thin films, which are not the part of this thesis as the work is not directly related: i A Kumar and K Y Zeng, Measurement of hardness of ultra -thin films by the first ... method to calculate the hardness of thin films from nanoindentation data”, 4th International conference on Technological Advances of Thin Films & Surface Coatings (ThinFilms2008), Singapore, July ... surface of ZnO: Cu:Co sample The red arrow represents the location and direction of data collection for the comparison Figure 8.3 The UPS results for Pt, ZnO, ZnO: Cu, ZnO: Co and ZnO: Cu:Co film Figure...

Ngày tải lên: 10/09/2015, 08:41

... polymer film Moisture uptake and swelling of the polymers can lead to significant reliability problems Presence of small amounts of water in polymer thin films can affect a variety of thin film ... function of film thickness is a common theme as it has dramatic impact on numerous thin film applications as Tg implies the softening of the material 11, 18 The first study of the dependence of Tg ... between Tg and the diffusion of water molecules in ultra -thin films The effect of moisture sorption of PEI ultra -thin films was investigated by measuring the frequency shift of PEI coated on QCM crystals...

Ngày tải lên: 05/10/2015, 19:04

... spectrum of WO3 films, deposited on 300 nm and 350 nm ITO layers and WO3 powder sample From XRD spectra of WO3 / ITO 300 nm film intensity of peak (001) exceeds intensity of peak (200) And WO3 film, ... grain size of WO3 film were determined by Scherrer equation and all of them valued in 30 nm to 35 nm 3.2 Micro – Raman Studies Due to structural modifications of WO3 films, deposited on of ITO layers ... heteroepitaxial growth of films WO3 in which the parameters of plane ITO (440) are slightly larger than the ones of WO3 planes The relation between shifts of XRD peaks and total film stress is given...

Ngày tải lên: 13/02/2014, 03:20

... (Color online) PL spectra of the as-grown ZnO films before and after N2 O treatment for 665 s 3.4 XRD, PL, and XPS measurements of ZnO films In order to determine the cause of the enhancement-mode ... of À5 V (b) Transfer characteristics and gate leakage current at VDS ¼ 10 V Results and Discussion 3.1 Structural properties of as-grown ZnO film Figure shows the SEM image and XRD spectrum of ... concentration of electrons in the MOCVD-grown undoped ZnO films resulting in the depletion-type behavior of ZnO TFTs However, more experimental work is required to determine the amount of hydrogen in the ZnO...

Ngày tải lên: 05/03/2014, 21:20

... (111), (200), (220), and (311) planes of cubic CdS [10] Fig Typical X-ray diffractogram of CdS thin films as grown Inset shows XRD pattern of the CdS thin films reported in [9] Table Standard ... typical Raman spectrum of the as-prepared CdS thin films is displayed in Fig The related researches [6] show that Raman spectra of CdS thin films strongly depends on the film grain size and thickness ... VNU Journal of Science, Mathematics - Physics 24 (2008) 119-123 (a) (b) Fig SEM images of CdS thin films prepared in the bath with ml of 1M CdSO4 solution for 9h (a) and with 25 ml of 1M CdSO4...

Ngày tải lên: 14/03/2014, 13:20

... Morphology of WO3 thin films Thin films of WO3 could be derived from the WO3 ·2H2 O sol added with PEG (2 wt.%) by one time spin coating and calcination at 300 ◦ C for h Fig shows SEM images of the thin ... films were an irregular packing of square plates of WO3 , 0.5–1 ␮m in width and 0.2–0.5 ␮m in thickness Each square plate was a stack of thin plates (lamellae) of less than 100 nm in thickness ... the crystals of WO3 ·2H2 O and that of WO3 : The basal plane (0 0) of WO3 ·2H2 O is converted into the basal plane (0 2) of WO3 [12] As shown by the cross-sectional view Fig 1c, the thin films were...

Ngày tải lên: 20/03/2014, 13:11

... respectively And the optical constants of the BFO thin film are obtained The bandgap of 2.68 eV for the BFO thin film is also received and is compared to that for BFO thin film deposited on different substrate ... show growth quality of the BFO thin film for further optical measurement and analysis Page of SE measurements were taken to investigate the optical properties of the BFO film Considering the ... Figure The real and imaginary parts of the dielectric function of the BFO thin film obtained from the Lorentz model to describe dielectric functions of the BFO thin film is less than the reported...

Ngày tải lên: 06/05/2014, 09:01