Controlling the Morphology of PEDOT:PSS Blend Films with Pre-Deposition Solution Composition and Deposition Technique

ABSTRACTThe electrodeposition of WO3 thin films from peroxy-tungstate solution is discussed. The emphasis is on the feasibility of this deposition technique for production of electrochromic devices. Therefore, the influence of deposition parameters (solution composition, electrodeposition potential, mass transport, etc.) on the properties of WO3 was studied. Furthermore, it was investigated whether electrodeposition of WO3 offers unique possibilities as compared to WO3 deposition by other techniques.

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The morphologies and electrical properties of indium contacts on (100) cadmium telluride surfaces

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100131747 ◽

1992 ◽

Vol 50 (2) ◽

pp. 1422-1423

Author(s):

A.M. Letsoalo ◽

M.E. Lee ◽

E.O. de Neijs

Keyword(s):

Electrical Properties ◽

Cadmium Telluride ◽

Methanol Solution ◽

Electrical Characteristics ◽

Metal Contacts ◽

Deposition Technique ◽

Interfacial Layers ◽

Semiconductor Contacts ◽

Grown Single Crystal ◽

Diamond Abrasive

Semiconductor devices require metal contacts for efficient collection of electrical charge. The physics of these metal/semiconductor contacts assumes perfect, abrupt and continuous interfaces between the layers. However, in practice these layers are neither continuous nor abrupt due to poor nucleation conditions and the formation of interfacial layers. The effects of layer thickness, deposition rate and substrate stoichiometry have been previously reported. In this work we will compare the effects of a single deposition technique and multiple depositions on the morphology of indium layers grown on (100) CdTe substrates. The electrical characteristics and specific resistivities of the indium contacts were measured, and their relationships with indium layer morphologies were established.Semi-insulating (100) CdTe samples were cut from Bridgman grown single crystal ingots. The surface of the as-cut slices were mechanically polished using 5μm, 3μm, 1μm and 0,25μm diamond abrasive respectively. This was followed by two minutes immersion in a 5% bromine-methanol solution.

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Effect of Gamma Radiation on Structural, Optical and Electrical Properties of nanostructured CdHgTe Thin Films

Nanoscale Reports ◽

10.26524/nr1815 ◽

2018 ◽

Vol 1 (1) ◽

pp. 26-31 ◽

Cited By ~ 1

Author(s):

B Babu ◽

K Mohanraj ◽

S Chandrasekar ◽

N Senthil Kumar ◽

B Mohanbabu

Keyword(s):

Thin Films ◽

Electrical Conductivity ◽

Electrical Properties ◽

Gamma Radiation ◽

Glass Substrate ◽

Gamma Ray ◽

Optical And Electrical Properties ◽

Deposition Technique ◽

Polycrystalline Structure ◽

Dc Electrical Conductivity

CdHgTe thin films were grown onto glass substrate via the Chemical bath deposition technique. XRD results indicate that a CdHgTe formed with a cubic polycrystalline structure. The crystallinity of CdHgTe thin films is gradually deteriorate with increasing the gamma irradiation. EDS spectrums confirms the presence of Cd, Hg and Te elements. DC electrical conductivity results depicted the conductivity of CdHgTe increase with increasing a gamma ray dosage

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An investigation into the paintbrush deposition technique for P3HT:PCBM based organic heterojunction solar cells

10.31274/etd-180810-2614 ◽

2011 ◽

Author(s):

Aaron Lee Thoeming

Keyword(s):

Solar Cells ◽

Deposition Technique ◽

Heterojunction Solar Cells

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Effect of ionizing radiation on the kinetics of hydrogenation on the Ni-MgO mixed catalyst

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19821780 ◽

1982 ◽

Vol 47 (7) ◽

pp. 1780-1786 ◽

Cited By ~ 2

Author(s):

Rostislav Kudláček ◽

Jan Lokoč

Keyword(s):

Experimental Data ◽

Activation Energy ◽

Liquid Phase ◽

Ionizing Radiation ◽

Oxide Catalyst ◽

Absorbed Dose ◽

Hydrogenation Rate ◽

Solution Composition ◽

Mixed Catalyst ◽

Kinetics Of

The effect of gamma pre-irradiation of the mixed nickel-magnesium oxide catalyst on the kinetics of hydrogenation of maleic acid in the liquid phase has been studied. The changes of the hydrogenation rate are compared with the changes of the adsorbed amount of the acid and with the changes of the solution composition, activation energy, and absorbed dose of the ionizing radiation. From this comparison and from the interpretation of the experimental data it can be deduced that two types of centers can be distinguished on the surface of the catalyst under study, namely the sorption centres for the acid and hydrogen and the reaction centres.

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Chitosan/Polyethylene Oxide (PEO) Filled Carbonized Wood Fiber Conductive Composite Film

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1010.638 ◽

2020 ◽

Vol 1010 ◽

pp. 638-644

Author(s):

Mohd Pisal Mohd Hanif ◽

Abd Jalil Jalilah ◽

Mohd Fadzil Hanim Anisah ◽

Arumugam Tilagavathy

Keyword(s):

Electrical Conductivity ◽

Tensile Strength ◽

Polyethylene Oxide ◽

Biomedical Applications ◽

Wood Fiber ◽

Conductive Polymer ◽

Renewable Resource ◽

Blend Films ◽

Conductive Composite Film ◽

Carbonized Wood

Biopolymer-based conductive polymer composites (CPCs) would open up various possibilities in biomedical applications owing to ease of processing, renewable resource and environmentally friendly. However, low mechanical properties are a major issue for their applications. In this study, the investigated the conductivity of chitosan/ PEO blend films filled with carbonized wood fiber (CWF) prepared by solution casting. The effect of CWF was also investigated on tensile properties and their morphological surfaces. The tensile results from different ratios of chitosan/PEO blend films without CWF show that the tensile strength and modulus increased with the increase of chitosan content and chitosan/PEO blend film with 70/30 ratio exhibited the best combination of tensile strength and flexibility. However, a reduction of tensile strength was observed when CWF amount was increased while the modulus of the tensile shows an increment. The film also exhibited higher electrical conductivity as compared to low chitosan ratio. The addition of CWF greatly enhanced the conductivity three-fold from 10-10 to 10-6 S/cm. The electrical conductivity continued to increase with the increase of CWF up to 30wt%. The surface morphology by Scanning Electron Microscopy (SEM) exhibits the absence of phase separation for the blends indicating good miscibility between the PEO and chitosan. Incorporation of CWF into the blend films at 5wt% showed agglomeration. However, the increase of CWF created larger agglomerations that formed conductive pathways resulting in improved conductivity. FTIR analysis suggested that intermolecular interactions occurred between chitosan and PEO while CWF interacts more with the protons of PEO.

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Synthesis of Boron-Doped Silicon Film Using Hot Wire Chemical Vapor Deposition Technique

Crystals ◽

10.3390/cryst10040237 ◽

2020 ◽

Vol 10 (4) ◽

pp. 237

Author(s):

M. Abul Hossion ◽

B. M. Arora

Keyword(s):

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Polycrystalline Silicon ◽

Silicon Film ◽

Chemical Vapor ◽

Hot Wire ◽

Deposition Technique ◽

Boron Doped ◽

Vapor Deposition Technique ◽

Polycrystalline Silicon Film

Boron-doped polycrystalline silicon film was synthesized using hot wire chemical vapor deposition technique for possible application in photonics devices. To investigate the effect of substrate, we considered Si/SiO2, glass/ITO/TiO2, Al2O3, and nickel tungsten alloy strip for the growth of polycrystalline silicon films. Scanning electron microscopy, optical reflectance, optical transmittance, X-ray diffraction, and I-V measurements were used to characterize the silicon films. The resistivity of the film was 1.3 × 10−2 Ω-cm for the polycrystalline silicon film, which was suitable for using as a window layer in a solar cell. These films have potential uses in making photodiode and photosensing devices.

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