NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2018, 9 (6), P. 811–822
Influence of cadmium acetate salt concentration on the composition, structure and morphology of CdxPb1-xS solid soluton films
I.V. Vaganova -Ural Federal University named after the first President of Russia B. N. Yeltsin. Mira St., 19. Yekaterinburg, 620002, Sverdlovsk Region, Russia; irina_vaganova@inbox.ru
L. N. Maskaeva – Ural Federal University named after the first President of Russia B. N. Yeltsin. Mira St., 19. Yekaterinburg, 620002, Sverdlovsk Region; Ural State Fire Service Institute of Emergency Ministry of Russia. Mira St., 22, Yekaterinburg, 620022, Sverdlovsk Region, Russia; mln@ural.ru
V. F. Markov – Ural Federal University named after the first President of Russia B. N. Yeltsin. Mira St., 19. Yekaterinburg, 620002, Sverdlovsk Region; Ural State Fire Service Institute of Emergency Ministry of Russia. Mira St., 22, Yekaterinburg, 620022, Sverdlovsk Region, Russia; v.f.markov@urfu.ru
V. I. Voronin – Institute of Metal Physics URAN named after M. N. Miheev. S. Kovalevsloy St., 18, Yekaterinburg, 620137, Sverdlovsk Region, Russia; voronin@imp.uran.ru
V. G. Bamburov – Institute of Solid State Chemistry URAN, Pervomaiskaya St. 91, Yekaterinburg, 620990, Sverdlovsk Region, Russia; bam@ihim.uran.ru
Films of supersaturated substitutional CdxPb1-xS (0.03 ≤ x ≤ 0.22) solutions with a B1-type structure based on lead sulfide cubic lattice were produced by chemical bath co-deposition of CdS and PbS with various concentrations of cadmium acetate in the ammonium citrate reaction mixtures. The results of X-ray measurements showed that with increasing cadmium acetate concentration the microstrains increase in the deposited layers and the crystallites have [200] preferred orientation and pronounced volume anisotropy. It is shown that the obtained films are nanostructured. Depending on the solid solution composition, the layers consist of crystallites with average sizes 200 – 1000 nm. These, in turn, are formed from initial nanoparticles with diameter 50 – 70 nm. The conductivity of the films decreases with increasing cadmium-sulfide content. The synthesized films are photosensitive without any special sensitization procedure in the visible and near-infrared spectral ranges. The maximum of spectral characteristic and the long-wave limit of the photo-response of CdxPb1-xS films move smoothly toward the short-wave spectral range from 3.1 to 1.6 μm and from 2.5 to 1.2 μm, respectively, with an increase in the substitution level of lead into cadmium in PbS lattice correspondently.
Keywords: chemical bath co-deposition, solid solution films, x-ray diffraction, microstrains, crystallite size.
DOI 10.17586/2220-8054-2018-9-6-811-822