aln film based acoustic devices material synthesis and device fabrication
ZnO based materials hydrothermal synthesis, material properties and a study on hydrogen effect
... Overview of ZnO -based Materials Oxides are the basis of functional materials and smart devices Functional oxides have recently attracted extensive attention due to their diverse and varied structures ... is a potential candidate material for optics and optoelectronics applications, especially for light emitting devices, due to its advantages of direct wide band gap (3.37 eV) and large exciton ... surface morphology and (b) cross section of Zn0.98Cu0.02O/quartz films, (c) surface morphology and (d) cross section of Zn0.98Cu0.02O/Si films, and (e) surface morphology and (f) cross section...
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Design and fabrication of ferroelectric thin film based microwave miniature tunable devices
... Chapter2: Fabrication of thin films and conducting layers This chapter concerns fabrication methods and process involving in the thin films and conducting layers for the filter, phase shifter and varactor ... candidate for tuning materials Other than Ba x Sr1− x TiO thin film, several materials have been considered for tunable devices applications For example, incipient ferroelectric SrTiO3 thin film ... microwave devices Superconductor Science and Technology, Volume11, Nomber11, Pages1323-1334 (1998) [11] N Setter, D Damjanovic and L Eng, Ferroelectric thin films: Review of materials, properties and...
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synthesis and characterization of novel ferromagnetic ppy-based nanocomposite
... of 10 kOe Results and discussions The structures of the PPy/Zn0.5Cu0.5Fe2O4 nanocomposite were investigated by FTIR spectroscopy and X-ray diffraction FTIR spectra of the PPy and PPy/Zn0.5Cu0.5Fe2O4 ... deformation vibration at 1302 and 1053 cm− 1, C–N stretching vibration at 1190 cm− 1, Fig XRD patterns of PPy/Zn0.5Cu0.5Fe2O4 nanocomposite (a) and the reference standard data for Zn0.5Cu0.5Fe2O4 ... J Jiang et al / Materials Letters 63 (2009) 560–562 561 Fig FTIR spectra of PPy (a) and PPy/Zn0.5Cu0.5Fe2O4 nanocomposite (b) well-stirred reaction...
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synthesis and characterisation of materials based on inorganic
... an Si–O–Al vibration at 810 cm 21 and an Fig Typical XRD powder diffraction patterns of the starting materials and selected polymer compositions after curing and drying Asterisks mark the major ... intensity of the bands at about 3500 and 1650 cm 21 (b) Major disruption of the Al environment is indicated by the loss of the Si–O–Al band at 810 cm 21 which is replaced by several weaker bands in the ... ESD 4.24 mm The densities of the kaolinite and metakaolinite, determined using a Le Chatelier volumetric vessel to the ABNT NBR 6474 standard, were 2.51 and 2.32 g cc 21 , respectively The DTA trace...
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Organic Light Emitting Diode Material Process and Devices Part 1 pot
... OLED Materials Chapter Synthesis, and Photo- and Electro-Luminescent Properties of Phosphorescent Iridium- and Platinum-Containing Polymers Yuji Koga and Kouki Matsubara Chapter Synthesis and ... 5, and (b) Iridium polymers and and platinum polymer were irradiated at 462 and 433 nm, respectively (metallopolymers 5, were 0.05 g/L and metallopolymers were 0.5 g/L) Synthesis, and Photo- and ... Science and Technology (KAIST), Daejeon, Korea Part OLED Materials Synthesis, and Photo- and Electro-Luminescent Properties of Phosphorescent Iridium- and Platinum-Containing Polymers Yuji Koga and...
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Organic Light Emitting Diode Material Process and Devices Part 2 pptx
... Diode – Material, Process and Devices nm with CIE coordinates of (0.17, 0.17) and (0.17, 0.19) for P1 -based device and P2 -based device, respectively In order to obtain a better solubility and a ... appeared in the platinum -based devices N and P We can conclude that iridium -based devices are superior to platinum -based ones in energy-transfer ability in this EL device system The device O showed the ... 2.56 (9.5 V) and 3.08 cd/A (9 V), high power efficiencies of 0.85 and 1.17 lm/W (7.5 V), and high brightness of 16664 (15 V) and 19885 cd/m2 (13 V) for P1 -based device and P2 -based device, respectively...
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Organic Light Emitting Diode Material Process and Devices Part 3 doc
... monomer synthesis, and also for both attaining sufficient solubility and avoiding the use of long alkyl chains The UV-vis absorption and 50 Organic Light Emitting Diode – Material, Process and Devices ... fluorescence and have good solubility in common organic solvents and high stability, which make them potential candidates as blue organic light-emitting materials for the fabrication of OLED devices, and ... for those materials provided valuable information for the molecular design of material as model systems or promising candidates toward highperformance optoelectronic devices Synthesis and Photophysical...
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Organic Light Emitting Diode Material Process and Devices Part 4 pdf
... light-emitting devices Organometallic Materials for Electroluminescent and Photovoltaic Devices 71 In order to present connections between main features of electronic structures and photophysical ... with polypyridyl ligands was developed a long time ago in the framework of crystal field theory and ligand field theory 76 Organic Light Emitting Diode – Material, Process and Devices using quasi-octahedral ... substituents on the pip ligands are found to lower the HOMO energy level and lead to blue-shifted emission wavelengths Based on 80 Organic Light Emitting Diode – Material, Process and Devices experimental...
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Organic Light Emitting Diode Material Process and Devices Part 5 ppt
... of narrow band gap fluorescent material utilizing beryllium complexes as host and ETL for efficient red phosphorescent 106 Organic Light Emitting Diode – Material, Process and Devices devices has ... PHOLEDs devices fabricated for the present study Devices A and B have a conventional multilayer structure containing hole and electron transport and injection, and hole blocking layers with CBP and ... current and power efficiencies are 9.66 cd/A and 6.90 lm/W for the device C, 8.67 cd/A and 4.00 lm/W for the device B, and 5.05 cd/A and 1.80 lm/W for the device A, respectively These values of device...
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Organic Light Emitting Diode Material Process and Devices Part 6 ppt
... the conduction and emission processes in single layer devices, we have fabricated following several devices and investigated We have made devices C and D without Ir(piq)3 dopant and results were ... displayed in Fig 15, both devices C and D (undoped) show J-V characteristics similar to Ir(piq)3 doped devices A and B, respectively Furthermore in our devices A and B, hole and electron injection ... narrow band-gap host and Ir(piq)3 red dopant materials, and 138 Organic Light Emitting Diode – Material, Process and Devices Bepp2 charge control layers (CCL) Triplet energies in fabricated MQW devices...
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Organic Light Emitting Diode Material Process and Devices Part 7 ppt
... generation of efficient devices, pioneered by Tang and Van Slyke from Eastman Kodak (1987), was based on fluorescent 162 Organic Light Emitting Diode – Material, Process and Devices materials In this ... Process and Devices materials are arranged by the LUMO levels representing electron accepting characters to discuss the energetic effects later The devices were fabricated in the same way and the device ... Organic Light Emitting Diode – Material, Process and Devices type devices, the performance was slightly improved, but that was mainly attributed to structural effect of film formation The hetero-layered...
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Organic Light Emitting Diode Material Process and Devices Part 8 potx
... – Material, Process and Devices devices with BCP their current efficiency significantly increase from 3.7 to 9.6 cd/A, and power efficiency increase from 0.87 to 1.46 lm/W (at 100 cd/m2) for devices ... Electroluminescent efficiency for devices with different HTL(31 nm) and EL(75 nm) 178 Organic Light Emitting Diode – Material, Process and Devices The current density-voltage and luminescence-voltage ... the studied devices are shown in Fig.17 The I/V curves of the devices with Alq2Acac were located in lower voltage region compared to the devices with Alq3 The luminescence of the devices with...
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Organic Light Emitting Diode Material Process and Devices Part 9 pptx
... Part OLED Processes and Devices Unconventional, Laser Based OLED Material Direct Patterning and Transfer Method 1Applied Seung Hwan Ko1 and Costas P Grigoropoulos2 Nano Tech and Science Lab, Department ... Light Emitting Diode – Material, Process and Devices Generally, organic materials have strong ultraviolet (UV) and infrared (IR) absorption bands attributed to electronic and vibrational transitions, ... 192 Organic Light Emitting Diode – Material, Process and Devices Van Slyke S., Chen C., and Tang C (1996), Organic electroluminescent devices with improved stability, Appl Phys Lett.,...
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Organic Light Emitting Diode Material Process and Devices Part 10 ppt
... uniformity, and good etching selectivity The zincbased TCO films are, therefore, regarded as promising substitutes for ITO film In Chapter 3, the Indium -based and Zinc -based TCO Materials, and their ... supply and demand of raw materials by the exhaustion of Indium source On the other hand, some zinc -based TCO materials have good optical and electrical properties comparable to the ITO films, ... basic physics of TCO films and surveys the various topics and challenges in this field It includes a description of the TCO materials used in some of the organic light emissive devices (OLEDs) that...
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Organic Light Emitting Diode Material Process and Devices Part 11 doc
... Diode – Material, Process and Devices In order to determine the effect of the CFx treatment, the conductance, capacitance, and impedance were respectively measured for the devices with and without ... Diode – Material, Process and Devices 2.6.3 Carbon nanotubes and graphene Electrode materials for the most important properties are very high conductivity Use materials with high conductivity and ... TZO films by the RFS system slightly increased with increasing 250 Organic Light Emitting Diode – Material, Process and Devices deposition thickness On the other hand, the intensity of the TZO films...
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Organic Light Emitting Diode Material Process and Devices Part 12 pptx
... various TCOs, such as ZnO based TCO or conducting polymer, nanometal, and carbon nanotube, etc have been investigated and can be applied in OLEDs and/ or other optoelectronic devices For example, ZnO ... Transparent Conducting Al-doped ZnO Films Prepared by Pulsed Laser 268 Organic Light Emitting Diode – Material, Process and Devices Deposition Thin Solid Films, Vol.445, No.2, (December 2003), ... and generates the reflected electric field designated by E0’ with k0’ 276 Organic Light Emitting Diode – Material, Process and Devices The first medium also contains two electric fields E1 and...
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Organic Light Emitting Diode Material Process and Devices Part 13 pptx
... combinations of host-guest materials, we fabricated three devices, referred as devices I, J, and K The guest materials of devices I, J, and K were DSB, DPVBi, and BCzVBi, respectively The device structure ... this result indicates that device C has a higher response speed than devices D and E The cutoff frequency of device C was 8.5 MHz, while those of devices D and E were 1.3 and 4.2 MHz, respectively ... sine wave voltage and the relative EL intensity for the three EIL (Liq)-inserted OLEDs, that is, devices F, G, and H with 300 Organic Light Emitting Diode – Material, Process and Devices 10 Cutoff...
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Organic Light Emitting Diode Material Process and Devices Part 14 pot
... organic semiconductors and devices Although TTA is not likely to work at room temperature and hfc will saturate at 320 Organic Light Emitting Diode – Material, Process and Devices relatively low ... magnetoresistance of the majority and minority carriers in -NPD and Alq by making the unijunction devices with different work function electrodes (Au and Cs) All of the devices showed Ohmic I -V characteristics ... phosphorescent device (normalized at zero field) The result at 10V is shown 318 Organic Light Emitting Diode – Material, Process and Devices 4.5 Magnetoconductance measurement of unipolar devices In...
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Báo cáo hóa học: "Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows" pdf
... loops (heating and cooling) and considering the mean value Results and discussion Structural characterization The crystal structure of the three sets of films has been assessed by XRD, and the obtained ... 7°C per at % Mo and Nb showed nearly the same results, about and 2°C, per at % Mo and Nb, respectively Conclusions Thermochromic VO thin films were successfully synthesized by DC and pulsed-DC ... XRD spectra of VO2 films deposited by (a1-a3, b4-b6) DC and (c7-c10) pulsed-DC sputtering, doped with different dopant element and contents: (a1) pure VO2, (a2) V0.97W0.03O2, and (a3) V0.95W0.05O2;...
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Báo cáo hóa học: " Core shell hybrids based on noble metal nanoparticles and conjugated polymers: synthesis and characterization" ppt
... markers and in particular, biological applications such as biolabelling and drug delivery In this paper, the synthesis and characterization of core shell systems based on noble metal nanoparticles and ... contributions IV, IF and MVR carried out the synthesis and characterizations and drafted the manuscript, CC light scattering characterizations, CB and GP carried out XPS studies All authors read and approved ... defined and stable polymeric shell Figure a: UV-Vis absorption spectra of samples Au@P (DMPAHCl) and Ag@P(DMPAHCl) and b: Ag, Au and Pt core shell in water suspensions image (yellow, pink and grey,...
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