Open AccessJournal Article
Investigation of phase transition mechanism in vanadium oxide thin films
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In this article, the electrical properties of specific vanadium oxide thin films, deposited on various substrates, have been investigated and it has been shown that conductivity is obtained by Schottky transport mechanism, whereas in high electrical fields conductivity ranges from Ohmic mechanism for low fields to Poole-Frenkel for higher fields.Abstract:
Thin film materials with "smart" properties which react with temperature variations, electrical or magnetic fields, and pressure variations, attracted great attention in recent years. Vanadium dioxide thin films belong to this family of "smart materials" by having a first order phase transition metal-semiconductor. These films display a variety of conductivities under heating in the vicinity of Curie temperature. The electrical properties of vanadium dioxide films were studied in past and found to be outstanding. This paper deals with the electrical properties of specific vanadium oxide thin films, deposited on various substrates. We have been able to show that the electrical transport mechanism of the obtained vanadium oxide films differs in low and high electrical fields. In low electrical fields, conductivity is obtained by Schottky transport mechanism, whereas in high electrical fields conductivity ranges from Ohmic mechanism for low fields to Poole-Frenkel for higher fields.read more
Citations
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Journal ArticleDOI
Synthesis of vanadium dioxide thin films and nanoparticles
Joyeeta Nag,Richard F. Haglund +1 more
TL;DR: A broad overview of the growth techniques that have been used to produce thin films and nanoparticles of VO2, including chemical vapor deposition, solgel synthesis, sputter deposition and pulsed laser deposition, is presented in this article.
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Hot-Probe method for evaluation of impurities concentration in semiconductors
TL;DR: A novel approach to the well known “Hot-Probe” method, which can measure and calculate the majority charged carriers concentration and its dynamic parameters and is applied in thin film semiconductor samples.
Journal ArticleDOI
Effect of substrate orientation on terahertz optical transmission through VO_2 thin films and application to functional antireflection coatings
TL;DR: In this paper, vanadium dioxide (VO2) thin films grown on c-, m-, and r-plane sapphire substrates were used as tunable broadband terahertz frequency antireflecting coatings.
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Synthesis and electrical transport of single-crystal NH4V3O8 nanobelts.
TL;DR: Monoclinic NH(4)V(3)O(8) single-crystalline nanobelts have been synthesized at large scale in an ammonium metavanadate solution by a templates/catalysts-free route and exhibits nonlinear, symmetric current/voltage characteristics.
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Ultralong silver trimolybdate nanowires: synthesis, phase transformation, stability, and their photocatalytic, optical, and electrical properties.
TL;DR: Investigations on photocatalytic, photoluminescent, and surface-enhanced Raman scattering (SERS) of the as-synthesized nanowires indicate that these Nanowires loaded with Ag nanoparticles by photoirradiation can be a new kind of photocatallytic and luminescent material and potentially can be used as an efficient SERS substrate.
References
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Book
Metal-insulator transitions
TL;DR: In this article, a discussion is given of some aspects of the metal insulator transition and the status of the "minimum metallic conductivity" is discussed, and the concept is valid for liquids and in some, but not all, solid systems.
Book
Principles of semiconductor devices
TL;DR: In this article, the Atoms-Bond model is used to evaluate the performance of current carriers in semiconductors, including three types of crystal structures: Graphene, carbon nanotubes and three-dimensional (3D) crystals.
Patent
Use of vanadium oxide in microbolometer sensors
TL;DR: In a microbolometer infrared radiation sensor, a detector material (VO2) having a high thermal coefficient of resistance was used to increase the sensitivity of the apparatus as discussed by the authors. But this detector material was not suitable for the measurement of the infrared radiation.
Patent
Thin film vanadium oxide spatial light modulators and methods
TL;DR: In this paper, a planar diode array is used for a VO 2-based infrared spatial light modulators (SLM) in four different configurations: planar, thermoelectric, diode-based, and bistable.