نتایج جستجو برای: doped zns
تعداد نتایج: 50881 فیلتر نتایج به سال:
Structure and energetics of rare-earth (RE) defects luminescence RE related in zincblende zinc sulfide (ZnS) are investigated using hybrid density-functional defect calculations. We find that europium (Eu) is stable predominantly as the divalent Eu 2+ ion bulk ZnS. The trivalent 3+ structurally electronically but energetically unfavorable compared to due presence low-energy native 2+-related co...
The first photoactivated doped quantum dot vector for metal-ion release has been developed. A facile method for doping copper(I) cations within ZnS quantum dot shells was achieved through the use of metal-dithiocarbamates, with Cu(+) ions elucidated by X-ray photoelectron spectroscopy. Photoexcitation of the quantum dots has been shown to release Cu(+) ions, which was employed as an effective c...
Recently, the synthesis of low-toxic quantum dots (QDs) and their application in biomedicine have attracted considerable attention. ZnSe nanocrystals doped with Mn ions which do not contain any Class A element (Cd, Pb, and Hg) can be used as a new generation of luminescent nanocrystals due to their strong dopant emission. In 2001, Norris et al. presented an organometallic synthetic route for th...
In recent years, studies on the efficient spatial charge separation for broad solar light absorption and water remediation have been a major priority. Moreover, development of transition metal-doped nanocomposites this purpose is new endeavor in current research. Here, we constructed an Fe3+-doped CdO/ZnS nanocomposite with low doping level investigated effect transfer recombination behavior im...
We report on a method to enhance the light-emission efficiency of printable thin films of a polymer doped with luminescent (CdSe)ZnS nanocrystals via metallic nanoparticles and nanoimprinted photonic crystals. We experimentally show a strong fluorescence enhancement of nanocrystals by coupling exciton-plasmon with the localized surface plasmon of metallic nanoparticles. The emitted light is eff...
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