منابع مشابه
Colloidal transition-metal-doped ZnO quantum dots.
Methods for introducing new magnetic, optical, electronic, photophysical, or photochemical properties to semiconductor nanocrystals are attracting intense applications-oriented interest. In this communication, we report the preparation and electronic absorption spectroscopy of colloidal ZnO DMS-QDs. Our synthetic procedure involves modification of literature methods known to yield highly crysta...
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We present the results of a computational study of ZnO in the presence of Co and Mn substitutional impurities. The goal of our work is to identify potential ferromagnetic ground states within the (Zn,Co)O or (Zn,Mn)O material systems that are also good candidates for piezoelectricity. We find that, in contrast to previous results, robust ferromagnetism is not obtained by substitution of Co or M...
متن کاملSynthesis and Characterization of Refractory Oxides Doped with Transition Metal Ions
In this study, the oxygen-deficient TiO 2 , SrTiO 3 systems and transition metal ion (Cr or V) doped TiO 2 , SrTiO 3 and SrZrO 3 systems have been investigated. We prepare samples as polycrystals, single crystals and thin films for various desires. Their structural, physical and electronic properties are measured by bulk-sensitive techniques (X-Ray Diffraction, SQUID and Electro Paramagnetic Re...
متن کاملTransition-Metal-Doped p-Type ZnO Nanoparticle-Based Sensory Array for Instant Discrimination of Explosive Vapors.
The development of portable, real-time, and cheap platforms to monitor ultratrace levels of explosives is of great urgence and importance due to the threat of terrorism attacks and the need for homeland security. However, most of the previous chemiresistor sensors for explosive detection are suffering from limited responses and long response time. Here, a transition-metal-doping method is prese...
متن کاملTransition Metal Ions Doped Novel Phosphor for Solid State White Lighting
Transition metal ions doped NaCaAlPO4F3 phosphors have been synthesized using a solid state reaction method. The prepared samples are characterized by powder XRD, SEM, optical absorption, EPR, PL and FT-IR techniques. The XRD studies confirm the crystal structure of prepared phosphor samples as monoclinic system. SEM images show nanoclusters. Optical absorption and EPR spectra of TM ions doped ...
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ژورنال
عنوان ژورنال: IEEE Transactions on Electron Devices
سال: 2007
ISSN: 0018-9383
DOI: 10.1109/ted.2007.894371