znse ito tio2 and zno thin films

... -56.7 wV/K for the pure ZnO, GZO, and IGZO thin films, respectively Consequently, the PF values at 573 K are 117.2, 208.1, and 363.2 uW/mK? for the pure ZnO, GZO, and IGZO thin films, respectively ... the InGaO3(ZnO)m superlattice structure [76].4.1.4 Thermal properties and thermoelectric performanceProperties of thermal conductivity (xe, xia, and Aor) of the ZnO, GZO, and IGZO 0.5 films, respectively, ... PF of all the films increased with temperature The o at 573 K is 79.0, 2185.5, and 1131.6 S/cm for the pure ZnO, GZO, and IGZO 0.5, respectively The S at 573K is -121.8, -30.9, and -56.7 wV/K

Ngày tải lên: 02/10/2024, 08:28

... hydrophilic properties of TiO2/SiO2 and TiO2/PEG thin films by Trang 2The thesis is completed at: Graduate University of Sciences and Technology, Vietnam Academy of Science and Technology Supervisors: ... anatse-shaped TiO2: The complex nano-structure TiO2/SiO2 and Nano-porous TiO2/PEG Trang 4Main study contents: Fabrication of TiO2/SiO2, TiO2/PEG material systems and experimental study on the structural ... rutile and anatase forms of TiO2and this is the cause of difference in nature between them The nature and application of TiO2 is highly dependent on the crystalline structure of the forms and particle

Ngày tải lên: 09/01/2020, 15:45

... the top (a); The ZnO nanotetrapods (b) and nanowires grown on the electrode; ethanol response of ZnO nanotetrapods- and nanowires - based sensors (d, e)[24] ZnO nanotetrapods- and nanowires-based ... sensitivity and selectivity to ethanol gas over various gases such as C3H8, CO and H2, and CNTs/La2O3 co-doped sensor has shown even better (seen Fig 6b) We have carefully tested the ethanol gas, and ... quasi-one-dimensional (Q1D) ZnO nanostructures, such as nanowires, nanobelts and nanoneedles, have been attracting tremendous research interests and they have been emerging as candidates for above-mentioned

Ngày tải lên: 11/01/2020, 23:09

... hydrophilic properties of TiO2/SiO2 and TiO2/PEG thin films by Trang 2The thesis is completed at: Graduate University of Sciences and Technology, Vietnam Academy of Science and Technology Supervisors: ... anatse-shaped TiO2: The complex nano-structure TiO2/SiO2 and Nano-porous TiO2/PEG Trang 4Main study contents: Fabrication of TiO2/SiO2, TiO2/PEG material systems and experimental study on the structural ... rutile and anatase forms of TiO2and this is the cause of difference in nature between them The nature and application of TiO2 is highly dependent on the crystalline structure of the forms and particle

Ngày tải lên: 15/01/2020, 08:31

... composite thin film were heat treated at different temperatures namely; 250, 300, 400, 500, 600, 700 and 800 °C to obtain seven (7) Ag/TiO2 composite thin films composite thin films Figure 1 (a) and ... the spin-coated S Ti precursor films at 800ºC Trang 3Absorption spectra of the resultant thin films The absorption spectra for the TiO2, Ag NP, and COMP-Agn thin films fabricated on quartz glass ... absorption spectra for Ag/TiO2 composites thin films heat treated at different temperatures The absorbance spectra of the synthesized Ag-NP/TiO2 composite thin films are decreasing, and then increasing

Ngày tải lên: 14/10/2020, 18:07

... University of Agriculture and Forestry Degree Program Bachelor in Environmental Science and Abstract: The photocatalytic thin films containing TiO2 nanoparticles and poly(L-Dopa) were fabricated ... simple and useful method to fabricate structured thin films with low cost and high reusability High transparency films using Nano-Degussa P25 was attributed to suitable particle size and colloidal ... 4.3.2 Photodegradation activities of PDopa films 31 Trang 74.3.2 Photodegradation performance of TiO2 34 4.4 P25/PDoPa films band gap 36 PART V DISCUSSION AND CONCLUSION 38 5.1 Discussion 38

Ngày tải lên: 16/05/2021, 11:47

... University of Agriculture and Forestry Degree Program Bachelor in Environmental Science and Abstract: The photocatalytic thin films containing TiO2 nanoparticles and poly(L-Dopa) were fabricated ... simple and useful method to fabricate Nano-structured thin films with low cost and high reusability High transparency films using Degussa P25 was attributed to suitable particle size and colloidal ... of TiO2 solution (pH3.0, C = 1g/l) Before sonication TiO2 solution for 10 minutes, 18 mg TiO2 was measured and dispersed in 18 ml DIW, and then adjusted until pH=3.0 by HNO3  PH adjustments TiO2

Ngày tải lên: 03/04/2023, 14:41

... University of Agriculture and Forestry Degree Program Bachelor in Environmental Science and Abstract: The photocatalytic thin films containing TiO2 nanoparticles and poly(L-Dopa) were fabricated ... simple and useful method to fabricate structured thin films with low cost and high reusability High transparency films using Nano-Degussa P25 was attributed to suitable particle size and colloidal ... NGUYEN UNIVERSITY UNIVERSITY OF AGRICULTURE AND FORESTRY DUONG CUONG THINH FABRICATION OF PHOTOCATALYTIC THIN FILMS CONTAINING TIO 2 NANOPARTICLES AND POLY(L-DOPA) BY LAYER-BY-LAYER SELF-ASSEMBLY

Ngày tải lên: 03/07/2023, 05:51

... promising technique for fabricating thin films containing TiO2 nanoparticles (Dong et al., 2015).This study focused on the fabrication of various films composed of TiO2 and Poly(L-Dopa) through a layer-by-layer ... proves to be a cost-effective and efficient method for creating nano-structured thin films of P25 nanoparticles and Poly(L-Dopa), leveraging the 3.2 eV band gap of bare P25 and the functional properties ... prepare TiO2 films with high optical transparency through layer-by-layer self-assembly using commercial TiO 2 and Poly(L-Dopa).Research questions and hypothesesThe procedure for fabricating [TiO2/Poly(L-Dopa)]n

Ngày tải lên: 25/09/2023, 18:50

... [41] and close to films depos-ited by other methods such as CVD (3.19 to 3.23 eV) [42] and pulsed laser deposition (3.26 eV) [43] and (3.1 eV) [44] As shown in Figure 9b and the inset, ZnO films ... respectively, for the 20-nm and 200-nm films Finally, for the 200-nm-thick ZnO film, the four-point Figure 9 Optical properties and grain structure of 20-nm- and thick ZnO films (a) Optical transmittance ... the pre-sence of ZnO on polyimide in Figure 7c The micro-cracks and voids on as-deposited ZnO films are attributed to a large thermal mismatch between ZnO (5 to 8 × 10-6/°C) and the underlying

Ngày tải lên: 20/06/2014, 22:20

... , and ZnO–SiO 2 :Ce 3+ Figures 2.8 (a) and (b) show the PL emission spectra of dried ZnO nanoparticles, the average ZnO nanoparticle diameter was 4 nm, and dried and calcined SiO2:Ce3+ and ZnO–SiO2:Ce3+ ... formation of an impurity band and localization due to disorder for x > 0.2, and (iii) splitting-off of an impurity band as a consequence of electron correlation and Anderson localization in ... Ce 3+ and mechanism of energy transfer from ZnO nanoparticles. Postulated mechanisms to account for transitions in ZnO nanoparticles and Ce3+, and a subsequent energy transfer between ZnO nanoparticles

Ngày tải lên: 25/03/2015, 11:58

... to grow porous thin films with different composition and degree of crystallinity; while sputtering with substrate heating was used to deposit thin films with excellent quality and uniformity ... scholarship and various education and conference allowances during my candidature Last but not least, I wish to express my love and gratitude to my beloved parents and wife for their endless love and ... patient mentorship and guidance during my earlier candidature I treasure our friendships and all the time we spent together for both work and fun Special thanks go to Mrs Ho Chiow Mooi and Mr Koo Chee

Ngày tải lên: 09/09/2015, 10:07

... thin films have good stability and don’t degrade over time [14] In addition, doped poly-Si thin films are found to have very high mobilities for electrons and holes [15] Most of the present thin-film ... the n-type poly-Si thin film obtained from the SPC of a-Si:H films deposited at 380 and 410 °C 93 Figure 4.5: EBSD grain size and orientation map of the n-type poly-Si thin films prepared from ... explores the properties of poly- Si thin films that can benefit other thin-film technologies and highlights the importance of the integration of poly-Si thin films with earth abundant materials

Ngày tải lên: 09/09/2015, 11:21

... CoAu thin films after annealing at 500°C for 15 minutes 87 Figure 5.5: BSE images of CoAu thin films after annealing at 500°C for 15 minutes 87 Figure 5.6: Morphologies of Au and Co thin films ... Morphologies of CoAu thin films after annealing at 800°C for 2 hours (b) BSE images of CoAu thin films after annealing at 800°C for 2 hours 93 Figure 5.11: Morphologies of Au and Co thin films after ... Co, CoPd and CoAu films 107 Figure 6.3: Out-of-plane magnetic hysteresis loops from as deposited 25-nm-thick Co, CoPd and CoAu films 108 Figure 6.4: SEM images of CoPd and Co thin films after

Ngày tải lên: 09/09/2015, 11:26

... L2,3 edges and (b) O K edge of the pure TiO2and Ti1-xTaxO2 (x~0.06) films grown at 600 and 750°C where µ + and µ - are parallel and parallel alignments between the photon helicity and the sample ... Goldhaber-Gordon formula for (a) Ti0.94Ta0.06O2, and (b) Ti0.94Nb0.06O2 thin films, and by Hamann formula for (c) Ti0.94Ta0.06O2, and(d) Ti0.94Nb0.06O2 thin films……… 64 Trang 18Figure 4.5: The variation ... random and channeling spectra for 6% Ta incorporated TiO2 on LAO substrate; (b) (Left axis) Minimum channeling yield for Ti and Ta and (Right axis) Ta substitutionality in Ti1-xTaxO2 thin films

Ngày tải lên: 09/09/2015, 18:49

... Chen and Haiyan Jiang, "Chapter 3: Fracture toughness and interfacial adhesion strength of thin films: indentation and scratch experiments and analysis", in CRC Handbook of Nano-Structured Thin Films ... did on copper and cobalt, codoped ZnO thin films for its bipolar charge stability Chapter discusses the local PFM response and dc bias application studied on the undoped ZnO thin films Chapter ... is used for writing the information and negative to erase In another study on ZnO thin film, the charge storage possibility in Cu and Co codoped ZnO thin films were characterized The surface...

Ngày tải lên: 10/09/2015, 08:41

... and ultra -thin films is both a reference and a tutorial for understanding the most common thin- films and coating techniques The book encompasses recent approaches and future trends in coating and ... fields of both physics and chemistry The goal of this book is to discuss the basics of ultra -thin films and nanocoatings and their synthesis techniques, surface characterization, and performance for ... block copolymers, and dendritic polymers), inorganic nanomaterials, and even carbon nanotubes and biomolecules This chapter will introduce several amphiphilic and colloidal materials and describe...

Ngày tải lên: 28/04/2014, 10:53

... PLATING SYSTEMS AND METAL THIN FILMS ON SILICONE AND NAFION MEMBRANES WANG KE (M.Sc., CUGB; M.Eng., CUGW) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL AND BIOMOLECULAR ... an appropriate surfactant in the PDMS matrix and partially xii embedding TiO2 nonoparticles on its surface to make a hydrophilic and rough surface; and then, ENP was carried out on the surface ... sulfur-containing amino-acids, Bi3+-complex ion and phosphines, to replace Pb in the ENP solution, and proposal of suitable ligands to introduce indissoluble Bi3+ ion and phosphines into the weak acidic...

Ngày tải lên: 14/09/2015, 14:01

... thin films Optical waveguides fabricated with ferroelectric thin films could be used in directional couplers [9] 2.1.3.2 Non-volatile Random Access Memory [3, 10, 12, 28] Ferroelectric thin films ... CONSTANTS OF THIN FILMS Solid thin films have been widely used in microelectromechanical systems (MEMS) and other microdevices The reliability of the mechanical properties of thin films is critical ... the films with certain morphology and crystallography The nucleation and growth of the films are regulated by kinetic energy of the atoms/species and substrate temperature, surface energy and...

Ngày tải lên: 14/09/2015, 18:31

... of thin films Moreover, this theory can be developed to investigate the thermodynamic properties and elastic properties of other materials such as thin films mounted on the substrate, oxide thin ... properties of metallic thin films which have face-centered cubic (FCC) and body-centered cubic (BCC) structures at different temperatures and pressures, in particular for metallic thin films: Al, Cu, ... METALLIC THIN FILMS WITH THE FACECENTER CUBIC AND BODY-CENTERED CUBIC STRUCTURES 3.1 Thermodynamic properties of metallic thin films at zero pressure 3.1.1 The atomic displacemente and the average...

Ngày tải lên: 01/11/2016, 20:14