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There have been increasing research activities on organic spintronics, due to the long spin relaxation time in organic semiconductors which allows retaining the spin information. Generally, the widely used organic semiconductors are tris-(8, hydroxyquinoline) aluminum (Alq3), oleic acid, poly (3-hexyl thiophene)(RRP3HT), etc. Recently, the inorganic-organic perovskite family of materials taking the...
Summary form only given. CdS is a promising material for flat panel displays, light-emitting diodes, lasers, logic gates, and transistors. CdS has attracted special interest because it exhibits high photosensitivity and its band gap energy (2.41 eV) and electron affinity (4.5 eV) appear in the visible spectrum [1]. In this work, CdS deposition on surface of the vertical aligned carbon nanotube (VACNT)...
Summary form only given.Recently, there is an increased interest in quantum dot sensitized solar cell (QDSSC), i.e., applying semiconductor quantum dots (QDs) in dye-sensitized solar cells [1]. However, QDSSCs have shown comparatively lower efficiencies than expected. One possible reason for the poor efficiency of QDSSC is the difficulty of assembling the QDs on ZnO surface to obtain a well-covered...
Studies on micro-fabrication processes on integrating amorphous Si nanowires (a-SiNWs) arrays into a triode device structures were performed. Self-aligned technique was employed. Uniform a-SiNW array and gated a-SiNW triode device structure were obtained. The work provides a possibility for fabricating crosslink addressable arrays of a-SiNW triode devices on low cost and large area glass substrates.
This paper presents a study on the contact resistance of interconnects between chip and package of embedded chip technology. Multi-layered aluminum/titanium tungsten/copper interconnects (Al/TiW/Cu) were used as the model system. Design of experiment was carried out to characterize the effect of under bump metallurgy deposition steps, including the degas and radio frequency (RF) plasma etch steps,...
Large scale crystalline Fe3O4 nanopyramid arrays are fabricated by CH4 and N2 plasma sputtering of hematite [0001] wafer. The nanopyramid arrays are characterized using SEM, TEM and EELS and the possible growth mechanism is discussed
W18O49 nanotip arrays were prepared by a two-step high-temperature, catalyst-free physical evaporation deposition process in high-purity argon gas. The prepared products were characterized by scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy. Field emission measurements were carried out with a transparent...
In this paper, single tungsten oxide (WOx) nanotip has been welded on tungsten microtip by pulsed laser. Also, field emission characteristic and low resistance electrical contact were obtained using scanning electron microscopy (SEM)
ZnO nanowire films were grown on stainless-steel disc with a thin layer of Au as catalyst by thermal evaporation in a vacuum chamber. Morphology of the nanowires was investigated by scanning electron microscopy, while emission site distribution images were recorded by a CCD camera. The nanowires were then used as cathodes in a luminescent tube and its turn-on and threshold voltages and fields, and...
Field emission display (FED) as one of the next generation display technologies, has attracted the attentions of many researchers. Preparation of low cost cold cathode material for FED application is the topic that attracts much attention in this area. In this paper, the vacuum gap dependence of field emission characteristics of polymethyl methacrylate (PMMA) polymer thin film were observed. The observed...
Current available metrology methods for metal layer line monitoring could include atomic force microscopic (AFM) scanning for trench depth measurement and top-down secondary electron microscope for CD measurement (CD-SEM). However, they both suffer from incomplete information outputs and repeatability issue. Transmission electron microscope (TEM) cross-sections and SEM cross-sections are the two major...
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