Semiconducting Thin Films
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Thickness Dependent Structural and Electrical Properties of Magnetron Sputtered Nanostructured CrN Thin Films
In the present work, we have investigated the structural and electrical properties of CrN thin films for a thickness t in the 30-220 nm range, grown on Si (100) substrates. The CrN/Si (100) films exhibits a structural transition from hexagonal phase (β-Cr2N) to cubic phase (CrN) with the increasing in film thickness, the change in structural transition is a
Mat. Res.. Publicado em: 10/04/2017
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2. Energetic and electronic properties in a multilayered ZnO graphene-like nanostructure
Nanostructures based on ZnO have been widely studied due to their electronic and piezoelectric properties. Experimental studies have shown that thin films based on ZnO can be used as chemical and optoelectronic sensors. The great goal of this work is to study of the role of the number of graphene-like layers in the physical properties of the ZnO. Therefore,
Mat. Res.. Publicado em: 28/03/2016
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3. Investigation of the Structural, Optical and Electrical Properties of Copper Selenide Thin Films
AbstractCopper selenide (CuSe) thin films were prepared by chemical bath deposition (CBD) method. X-ray diffraction (XRD) analysis was used to study the structure and crystallite size of CuSe thin film. The grain size and the surface morphology were studied using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The optical properties wer
Mat. Res.. Publicado em: 2015-10
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4. Espectroscopia ultrarrápida do polímero semicondutor luminescente MEH-PPV com excitação no ultravioleta / Ultrafast spectroscopy of the luminescent semiconducting polymer MEH-PPV with ultraviolet excitation
The optoelectronics industry is currently undergoing a transition period in which inorganic materials are being replaced by organic materials, oligomers and polymers, in the fabrication of some types of devices. However, factors such as low efficiency and low lifetime prevent polymer based devices on entering the market definitely. The solution of these issu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/08/2012
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5. Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were performed in order to determine the influence of the microstructure and working conditions over the electrical r
Materials Research. Publicado em: 2009-03
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6. ProduÃÃo de heterojunÃÃes de polianilina/silÃcio e nanofibras de polianilina para aplicaÃÃes em dispositivos hÃbridos
In this work we develop the methodology for the synthesis and fabrication of Polyaniline (PANI) â Silicon (Si) heterojunctions, with great potential for technological applications as sensors in different areas such as optics, ionizing radiation and gas detection. Besides, we were able to implement the electrospinnin technique with the goal of producing poly
Publicado em: 2006
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7. MBE growth and characterization of films SnTe layers and SnTe/Sn1-x EuxTe heterostructures on BaF2 / Crescimento por MBE e caracterização de filmes SnTe e heteroestruturas de SnTe/Sn1-x EuxTe sobre BaF2
This work presents a systematic investigation of structural and electrical properties of SnTe epitaxial films grown on BaF2 substrates, as well as a study of structural properties of Sn1-xEuxTe (0
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2005
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8. MBE growth and characterization of films SnTe layers and SnTe/Sn1-x EuxTe heterostructures on BaF2 / Crescimento por MBE e caracterização de filmes SnTe e heteroestruturas de SnTe/Sn1-x EuxTe sobre BaF2
Este trabalho tem por objetivo a investigação sistemática das propriedades estruturais e elétricas de filmes epitaxiais de SnTe crescidos sobre substratos de BaF2 (111), bem como o estudo das propriedades estruturais de filmes de Sn1-xEuxTe (0<xEu=0,12) crescidos sobre camadas intermediárias de SnTe pré-depositadas sobre substratos de BaF2 (111). As
Publicado em: 2005
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9. Microassembly based on hands free origami with bidirectional curvature
Microassembly based on origami, the Japanese art of paper folding, presents an attractive methodology for constructing complex three-dimensional (3D) devices and advanced materials. A variety of functional structures have been created using patterned metallic, semiconducting, and polymeric thin films, but have been limited to those that curve in a single dir
American Institute of Physics.
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10. Soft, conformable electrical contacts for organic semiconductors: High-resolution plastic circuits by lamination
Soft, conformable electrical contacts provide efficient, noninvasive probes for the transport properties of chemically and mechanically fragile, ultrathin organic semiconducting films. When combined with high-resolution printing and lamination techniques, these soft contacts also form the basis of a powerful technique for fabricating flexible plastic circuit
National Academy of Sciences.