Open AccessSynthesis and study of some properties of colloidal quantum dots of indium antimonide
Author(s) -
Olga Yu. Tsvetkova,
AUTHOR_ID,
С. Н. Штыков,
N. D. Zhukov,
Tatiana D. Smirnova,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2021
Publication title -
izvestiâ saratovskogo universiteta. novaâ seriâ. seriâ himiâ. biologiâ. èkologiâ
Language(s) - English
Resource type - Journals
eISSN - 2541-8971
pISSN - 1816-9775
DOI - 10.18500/1816-9775-2021-21-4-378-381
Subject(s) - indium antimonide , quantum dot , indium , materials science , transmission electron microscopy , nanoparticle , luminescence , microanalysis , antimonide , antimony , analytical chemistry (journal) , nanotechnology , chemistry , optoelectronics , metallurgy , organic chemistry , chromatography
Colloidal quantum dots of indium antimonide have been synthesized by a known technique. The shape and average diameters of quantum dots have been investigated by transmission electron microscopy using a transmission microscope. Controlling the size and shape of colloidal QDs provides information on the formation of the crystal structure of nanoparticles and their possible physical and optical properties. It has been found that InSb quantum dots are characterized by a polygonal shape. The results obtained for QDs correspond to the crystal lattice system of a semiconductor with a cubic crystal lattice structure. Elemental analysis of nanoparticles has been monitored by X-ray microanalysis. The experimental determination error was no more than one percent. The percentages of indium and antimony in QDs according to X-ray microanalysis data corresponded to the theoretical stoichiometry In: Sb = 1:1. Impurities of other elements constituted the level of trace amounts, which confirmed the chemical purity of the synthesized InSb QDs. The fluorescent properties of indium antimonide nanoparticles have been studied. It has been found that the luminescence intensity of InSb nanoparticles at room temperature is insignificant, which is in agreement with the literature data. The quantum yield does not exceed 1%, and the luminescence maximum lies in the range of 1040 nm.