Semiconductor Quantum Dots as Materials for Lasers Based on Them
Journal Title: Фізика і хімія твердого тіла - Year 2018, Vol 19, Issue 2
Abstract
Quantum dots (QDs) today belong to the central research objects of many scientific groups. The study of theproperties of structures of small size is important both for the further development of electronics, and for theimprovement of existing semiconductor devices. At present, there are many methods of obtaining QDsobtainingunder the laboratory conditions: the method of ultrasonic grinding, molecular beam epitaxy, pulsed laser ablation,as well as using such methods of chemical synthesis as organometall synthesis, synthesis in reverse micelles,electrothermal synthesis, sol-gel synthesis, synthesis using thiol stabilizers, synthesis in a non-aqueous medium.Nowadays, the most promising methods are based on the use of the phenomenon of self-organization. These aremolecular-beam epitaxy and colloidal chemistry methods, and the latter are used for synthesisof nanosizedcrystals.The band gap width and the energy of luminescence peak are determined by the size of the particles.
Authors and Affiliations
S. D. Bardashevska, I. M. Budzulyak, S. I. Budzulyak, B. I. Rachiy, A. M. Boychuk
Keywords
Related Articles
- EP ID EP381655
- DOI 10.15330/pcss.19.2.113-129
- Views 90
- Downloads 0
Laser Illumination Influence on the Optical Characteristics of As40S60-xSex (0 ≤ x ≤ 15) Films
The results of investigation of the As40S60-xSex amorphous films transmission spectra depending on thickness, exposure and heat treatment conditions are given. It was established that the increase of Se content in films...
Raman Spectroscopy Of Fullerene-Like Molecules Of Silicon Dioxide (SiO2)N(H2O)N/2
The Raman spectra of monosilicic, disilicic acid molecules, tetra- and pentasilicic acid molecules with cyclic structure, cage-like okta- and dekasilicic asid molecules, and of fullerene-like molecule (SiO<sub>2</sub>)<s...
Modern Fiber-Optic Couplers of X-type Based on Multimode Quartz-Quartz Optical Fibers
А technique of creation of X-types passive fiber couplers has been improved. By the technique, a number of passive fiber couplers of X-types as well as an active fiber coupler of X- type based on the Mach-Zehnder interfe...
Hydrostatic Pressure Effect on Relaxation of Quasi-One-Dimensional GPI Ferroelectric
Dynamic model of deformed quasi-one-dimensional ferroelectrics with hydrogen bonds is proposed. On the basis of this model within the two-particle cluster approximation with taking into account short-range and long-range...
Influence of Structural Defects in Epitaxial Ferrite-Garnet Films on their Magnetic Properties
The study of defects observed in substrates with gadolinium gallium garnet (GGG) with orientations (110), (100) and (111) and in epitaxial films grown of iron-yttrium garnet (YIG) were investigation. It is shown that the...