Фотолюминесценция ZnS : Cu в матрице полиметилметакрилата

ZnS Cu-doped quantum dots

The paper presents a survey of literature on the structure and optical properties of ZnS and copper ion-doped ZnS quantum dots. The effect of other metal dopants on the spectral properties of ZnS:Cu quantum dots was also considered. The influence of such parameters as dopant concentration, temperature of the synthesis and compounds which form or modify the additional layer on dots on spectral p...

Brightness degradation in electroluminescent ZnS : Cu

Monte Carlo simulations using crystal chemical constraints have been used to elucidate the copper diffusion mechanisms in copper-doped zinc sulfide. Relaxation around the ZnSuCu S interface allows facile copper diffusion, particularly in the 22x presence of substitutional oxygen or sulfur vacancies. Copper diffusion is responsible for the brightness degradation in this electroluminescent materi...

Computational Complexity of Estimation of Generalized Solution Sets for Interval Linear Systems

В работе исследуется вычислительная сложность задач распознавания и оценивания обобщенных множеств решений интервальных систем линейных алгебраических уравнений. Показано, что если матрица системы содержит “достаточно много” элементов с интервальной неопределенностью Е-типа, то задачи распознавания и оценивания множества решений такой системы уравнений являются NP-трудными. Напротив, если в инт...

Preparation of nanocomposite scintillator of ZnS doped with Ag, Cu and AgCu for alpha particle detection

ZnS nanoparticles (NPs) doped with ‎Ag‎, ‎Cu‎, ‎and AgCu were synthesized using hydrothermal‎ ‎method in water solution‎. ‎The NPS are characterized by X-ray diffraction (XRD)‎, ‎energy-dispersive‎ ‎X-ray spectroscopy scanning (EDX)‎, ‎scanning electron‎ ‎microscopy (SEM) and dynamic light scattering (DLS)‎. ‎The produced NPs have approximately hexagonal structure and a cubic zinc blended struc...

Temperature and pressure behavior of the emission bands from Mn-, Cu-, and Eu-doped ZnS nanocrystals