zno mn nanocluster assembled films

... Microstructural, Magnetic and Optical Properties of ZnO: Mn Nanocluster Assembled Films and ZnO: Mn- SiO2 Nanocomposite 77 6.1 ZnO: Mn Nanocluster Assembled Films 77 6.1.1 Introduction ... substrate holder ZnO: Cu and ZnO: Mn nanocluster assembled films were fabricated by using sputtering gas aggregation while ZnO: Cu-SiO2 and ZnO: Mn- SiO2 were prepared by depositing ZnO: Cu and ZnO: Mn with ... Zn0.94Cu0.06O nanocluster assembled films and (3) ZnO: Cu-SiO2 nanocomposite; and (4) the magnetic and optical properties of Zn0.9 4Mn0 .06O nanocluster assembled films and (5) ZnO: Mn- SiO2 nanocomposite...

Ngày tải lên: 04/10/2015, 10:24

... Microstructural, Magnetic and Optical Properties of ZnO: Mn Nanocluster Assembled Films and ZnO: Mn- SiO2 Nanocomposite 77 6.1 ZnO: Mn Nanocluster Assembled Films 77 6.1.1 Introduction ... substrate holder ZnO: Cu and ZnO: Mn nanocluster assembled films were fabricated by using sputtering gas aggregation while ZnO: Cu-SiO2 and ZnO: Mn- SiO2 were prepared by depositing ZnO: Cu and ZnO: Mn with ... Zn0.94Cu0.06O nanocluster assembled films and (3) ZnO: Cu-SiO2 nanocomposite; and (4) the magnetic and optical properties of Zn0.9 4Mn0 .06O nanocluster assembled films and (5) ZnO: Mn- SiO2 nanocomposite...

Ngày tải lên: 12/10/2015, 17:33

... _-3 ZnO : -6 ZnO :AJ -7 f~ ZnO: Ga -8 ■ 1 50 100 150 200 250 Nhiêt đô (°C) - - ; ; ' 300 Hình 2.9 Đổ thị lnp theo nhiệt độ màng ZnO: Al, ZnO: Ga ZnO Các m àng dẫn suốt ZnO :A ... of Mn and Co implanted ZnO crystals”, Solid-State Electronics, 47, pp 1523-1531 [4] Posada E., Tobin G McGlynn E and Lunney J.G (2003), “Pulsed laser deposition of ZnO and Mn- doped ZnO thin films , ... properties of ZnO: Al films prepared by r f magnetron sputtering E xp erim en tal The ZnO: Al films w ere prepared on glass substrate by r.f magnetron sputtering The target with a m ixture of ZnO (99.9%...

Ngày tải lên: 19/03/2015, 09:22

... undoped ZnO and at.% ZnO: Sn thin film Further Sn doping to Table The average grain sizes of the ZnO: Sn thin films with 0, and at.% Sn concentrations Fig XRD patterns of the undoped and Sn-doped ZnO ... crystalline grain size of the ZnO and the ZnO: Sn thin films at and at.% was measured by transmission electron microscopy (TEM) (Model JEM-3101-JEOL) In order to prepare a specimen for ZnO (Fig 4(a)), the ... images of the undoped ZnO thin films and the ZnO: Sn thin films at 2, 4, and at.% Sn doping levels As demonstrated in the figure, variations in the surface morphology of the ZnO: Sn films with an increase...

Ngày tải lên: 12/12/2017, 06:34

... 3,37 eV nhiệt độ phòng ZnO tinh khiết vật liệu suốt khơng màu 1.4 Tính chất quang ZnO Phổ huỳnh quang ZnO tồn hai cực đại phát xạ 1.5 Tính chất từ ZnO: Người ta nhận thấy ZnO vật liệu đầy triển ... cấm thẳng Tinh thể ZnO thường tồn dạng lục giác kiểu wurtzite Hình 1.2: Sơ đồ cấu trúc vùng lượng (a)- theo Birman (b)- theo Thomas ZnO lân cận k=0 1.3 Tính chất điện ZnO ZnO có lượng vùng cấm ... thành phần Zn, Mn ̀ O, không xuất nguyên tố khác Hình 3.3: Phổ tán sắc EDS mẫu Zn0.9 4Mn0 .06O 3.1.2 Kết đo Raman hệ mẫu Zn1-xMnxO: Hình 3.4 phổ Raman nhiệt độ phòng tất mẫu hệ mẫu Zn1-xMnxO đươ ̣c...

Ngày tải lên: 10/02/2014, 14:53

Ngày tải lên: 14/03/2014, 13:20

... bulk samples ZnS :Mn (a), ZnS:Cu (b) ZnO: Co (c) and nanocrystalline ZnS :Mn (d) Fig SEM images of bulk samples ZnS :Mn (a), ZnS:Cu(b), ZnO: Co (c) and nanocrystalline sample ZnS :Mn (d) 183 P.V Ben, ... 3d5 shell of Mn2 + ions: [4T1 6A1][7-11] When Mn2 + concentration increases over xMn = 8.10-3 mol%, it is possible that interaction between Mn2 + ions and ions of the lattice or betwen Mn2 + ions each ... bulk samples of ZnS :Mn (a), ZnS:Cu (b) and ZnO: Co (c) and nanocrystalline sample ZnS :Mn (d) In general, distribution of particles is quite properly For bulk samples of ZnS :Mn, ZnS:Co and ZnS:Cu,...

Ngày tải lên: 22/03/2014, 11:20

... synthesized hexagonal ZnO nanorods assembled flowers 3.2 Plausible growth mechanism of hexagonal ZnO nanorods assembled flowers To investigate the growth of synthesized hexagonal ZnO nanorods assembled flower ... hexagonal ZnO nanorods wherein these hexagonal ZnO nanorods are assembled into flower morphology From Fig 1(b), well defined hexagonal ZnO nanorods make an assembly of flower shape Each ZnO nanorods ... self -assembled into flower morphology As the reaction aged at 105 °C for 10 h, ZnðOHÞ2À ions dissociate to form ZnO nuclei as follow; ZnðOHÞ2À ! ZnO ỵ H2 O ỵ 2OH The formation of ZnO nanorods assembled...

Ngày tải lên: 06/05/2014, 13:23

... Fig shows the FE-SEM images of the self -assembled ZnO 3D nanostructures, which were synthesized in an aqueous solution at various pH The shape of the ZnO 3D nanostructures showed different morphologies ... very slender ZnO nanorods were synthesized in pH 10.5 The diameter of the ZnO nanorods increased with increasing pH This was attributed to the growth rates of specific planes of the ZnO nanorods ... specific planes in the ZnO nanostructure It was found that the solution pH is the main factor affecting the morphology of the ZnO nanostructure XRD and SAED showed that the ZnO nanostructures were...

Ngày tải lên: 06/05/2014, 13:24

... series of as-grown and postgrowth annealed GaMnAs films on GaAs(001), with a range of different Mn concentrations Experimental details The Ga1-xMnxAs films were grown on semi-insulating GaAs(001) ... Anisotropic magnetoresistance in as-grown and annealed GaMnAs GaMnAs films are known to show an insulator-to-metal transition with increasing Mn, occurring at around x=0.03 in the earliest reports ... injection or accumulation in devices GaMnAs films also show a remarkable variety of magnetic anisotropies In general, compressive and tensile strained films show in-plane and perpendicular anisotropies...

Ngày tải lên: 31/05/2014, 22:00

... X-ray patterns of ZnO films ZnO films with thicknesses between 40 and 180 nm structure, a = 3.249 Å and c = 5.201 Å) which is consistent with data of ZnO JCPDS no 36-1451 All films were polycrystalline ... textured ZnO films for 40, 120, and 180 nm is 0.84, 002 100 160 180 nm 120 nm 100 Intensity 002 190 002 75 100 40 nm 30 40 50 60 Figure X-ray patterns of ZnO nanorods ZnO nanorods grown on ALD -ZnO films ... nucleation sites for ZnO nanorods growth The ZnO films are composed of fine small grains (seeds) and these have average height (AH) that depends on the film thickness, if the ALDZnO films of 40 and...

Ngày tải lên: 21/06/2014, 00:20

... nanocrystalline ZnO: Ga films deposited by plasmaenhanced chemical vapor deposition Thin Solid Films 2005, 473:35 Minami T: Transport phenomena in high performance nanocrystalline ZnO: Ga films deposited ... guas H, Pereira L, Ferreira I, Martins R: Growth of ZnO: Ga thin films at room temperature on polymeric substrates: thickness dependence Thin Solid Films 2003, 442:121 Samantilleke et al Nanoscale ... J-AE, Betz U, Escola MF, Olsson MK, Atamny F: Mechanical integrity of transparent conductive oxide films for flexible polymer-based displays Thin Solid Films 2004, 460:156 doi:10.1186/1556-276X-6-309...

Ngày tải lên: 21/06/2014, 04:20

... Characterization of ZnO Films Fig Dark adsorption of TCP on ZnO thin film catalyst prepared by thermal evaporation and sol–gel techniques Fig Kinetics of TCP photocatalytic degradation using ZnO thin film ... semiconductors, ZnO is distinguished by its absorption over a larger fraction of the UV spectrum and the corresponding threshold of ZnO is 425 nm Therefore, 123 Nanoscale Res Lett (2009) 4:627–634 ZnO photocatalyst ... intermediates were determined and the degradation mechanism was discussed Experimental Work ZnO Thin Films by Thermal Evaporation Thin films of Zn were thermally grown onto glass substrates of...

Ngày tải lên: 22/06/2014, 00:20

... due to that the ZnO nanowires with the thin ZnO buffer layer (*300–500 nm) had higher aspect ratios (*55–79) compared with that (*39–48) of the ZnO nanowires with *0.8–1 lm of the ZnO buffer layer, ... different ZnO seed preparation methods strongly influenced the morphology and density of ZnO nanowire arrays The nanowire film growing from the ZnO seeds prepared by dipcoating had a thin ZnO buffer ... Effect of ZnO Crystal Seed Particles Prepared by Different Methods In this study, we found that the different ZnO seed preparation methods strongly influenced the morphology and density of ZnO nanowire...

Ngày tải lên: 22/06/2014, 00:20

... 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* 3.6 nm* ... Conditions of ZnO Thin Films ZnO thin films were grown on (0001) (c-oriented), ð1120Þ (a-oriented) sapphire and (0001) 6H-SiC substrates by using PLD system, which is popularly adapted in growing ZnO layers ... 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...

Ngày tải lên: 22/06/2014, 01:20

... condensationị 9ị If three molecules of Zn(OH)2 condense, the reaction would be expressed as; HOZnOZnOH ỵ HOZnOH ! HOZnOZnOZnOH poly-condensationị 10ị The process would continue After the evaporation of the ... follows; Zn(OH)CH3 COOị2 ỵ OH ! ZnOHị2 ỵ CH3 COO ! Hydrolysisị 8ị If two molecules of Zn(OH)2 condense, the reaction can be expressed as; HOZnOH ỵ HOZnOH ! HOZnOZnOH ỵ H2 O condensationị 9ị If ... Thin Solid Films 217, 133 (1992) R Kaur, A.V Singh, R.M Mehra, Mater Sci Poland 22, 201 (2004) M.N Kamlasanan, S Chandra, Thin Solid Films 288, 112 (1996) T Saeed, P O’Brien, Thin Solid Films 271,...

Ngày tải lên: 22/06/2014, 18:20

Ngày tải lên: 21/07/2014, 16:21

... gớ c ZnO Khi lƣơ ̣ng Mn pha tạp vào nhỏ (x  0,04), mẫu đơn pha đó Mn khơng làm thay đổi tính chất cấu trúc vật liệu gốc điều chứng tỏ ion Mn vào phân mạng ZnO Khi x ≥ 0,06 ngồi đỉnh ZnO tồn ... thể mẫu hệ Zn xMnxO 1- đƣơ ̣c đƣa bảng 3.1: Bảng 3.1: Hằng số mạng hệ mẫu Zn1-xMnxO Kích thƣớc Mẫu a (Å) c (Å) c/a ZnO 3,250 5,210 1,602 27 Zn0,9 8Mn0 ,02O 3,253 5,208 1,601 24 Zn0,9 6Mn0 ,04O 3,253 ... khối Zn1-xMnxO 30 24 Hình 3.2: Ảnh SEM hệ mẫu Zn1-xMnxO 33 25 Hình 3.3: Phổ tán sắc EDS mẫu Zn0. 9Mn0 .02O 34 Luận văn cao học Học viên: Đào Sơn Lâm Hình 3.4: Phổ tán sắc EDS mẫu Zn0. 9Mn0 .04O 35...

Ngày tải lên: 31/03/2015, 15:35

... the 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 ... co-doped ZnO thin film Finally, undoped ZnO thin films were investigated based on the contact engineering A ferroelectric-like behavior is observed under certain combination of condition in ZnO Some ... biases applied (measured at the arrow location in Figure 8.2) for: (a) undoped ZnO, (b) ZnO: Co, (c) ZnO: Cu and (d) ZnO: Cu:Co respectivily The positive and negative biases and there locations are...

Ngày tải lên: 10/09/2015, 08:41

... 2.4 Tribology of Polymer Films 30 2.5 Current Developments in Nanolubrication (or MEMS lubrication): Friction and wear durability data of L-B films, SAMs and polymer films 31 viii Table of Contents ... Table of Contents films on Si surface 53 3.1.11 Nano-mechanical property characterization of polymer films using Nanoindentation 56 Chapter Tribology of PFPE overcoated Self -assembled monolayers ... UHMWPE films where the two UHMWPE films were heated at two different temperatures (110 and 135oC respectively) after dipcoating 111 Figure 5.13 XPS F1s spectrum of PFPE overcoated UHMWPE films...

Ngày tải lên: 14/09/2015, 12:11