http://dspace.nbuv.gov.ua:80/handle/123456789/150319 2026-04-14T13:02:36Z 2026-04-14T13:02:36Z Khrypunov, G.S. Kopach, G.I. Dobrozhan, A.I. Mygushchenko, R.P. Kropachek, O.V. Lyubov, V.M. http://dspace.nbuv.gov.ua:80/handle/123456789/157634 2019-06-20T22:30:07Z 2019-01-01T00:00:00Z

Structure and optical properties of CdS polycrystalline layers for solar cells based on CdS/CdTe Khrypunov, G.S.; Kopach, G.I.; Dobrozhan, A.I.; Mygushchenko, R.P.; Kropachek, O.V.; Lyubov, V.M. Thin CdS films about 200-500 nm thick with stable hexagonal modification with 85-80 % transparency value respectively in the visible and infrared spectrum regions were investigated. The use of the FTO sublayer to obtain heterosystem glass/FTO/CdS by magnetron sputtering does not affect the phase composition of the cadmium sulfide layer and the width of the band gap (Eg = 2.42-2.44 eV). Cadmium sulfide thin films, obtained by direct current magnetron sputtering, can be used as a layer of a wide window layer in thin-film solar cells based on the CdS/CdTe heterosystem.

2019-01-01T00:00:00Z Wentao Shang Zhong Liu Yuqin Gao http://dspace.nbuv.gov.ua:80/handle/123456789/157448 2019-06-20T22:25:24Z 2019-01-01T00:00:00Z

Effect of nano-SiO₂ and lime on characteristics and mechanical properties of coastal clay Wentao Shang; Zhong Liu; Yuqin Gao In this study, the effect of nano-SiO₂ and lime on the characteristics and mechanical properties of coastal clay were investigated. The California bearing ratio (CBR) test and hydraulic conductivity tests were performed to investigate the improved coastal clay strength and hydraulic parameters. The clay specimens were prepared in 5 groups: unmixed, mixed with 3 % lime, 5 % lime, 3 % lime + 1.5 % nano-SiO₂ and 5 % lime + 3 % nano-SiO₂. The results show that the cementation of nano-SiO2 and lime leads to larger CBR values and lower permeability of the coastal clay. Scanning electron microscopy reveals that nano-SiO₂ particles fill in the interspace between lime particles or gel pores, with the diameters of capillary pores and micro-pores reduced.

2019-01-01T00:00:00Z Lu, F. Meng, F.F. Wang, L.L. Dai, Y.Q. http://dspace.nbuv.gov.ua:80/handle/123456789/157447 2019-06-20T22:30:17Z 2019-01-01T00:00:00Z

Micro-nano zinc nitrate hexahydrate film fabricated by biomimetic mineralization Lu, F.; Meng, F.F.; Wang, L.L.; Dai, Y.Q. In this work, Zn(NO₃)₂·6H₂O micro-nano rods are successfully fabricated by a biomimetic mineralization process. During synthetic process, the self-assembly monolayers with different terminal groups are used as templates to induce the nucleation and growth of Zn(NO₃)₂·6H₂O crystals. The products obtained at different conditions are characterized by means of X-ray diffraction patterns, scanning electron microscopy. The results show that the orientation and morphology of the Zn(NO₃)₂·6H₂O crystals are controlled properly by tuning the terminal groups of the self-assembled monolayers.

2019-01-01T00:00:00Z Petchenko, O.M. Petchenko, G.O. Boiko, S.M. Litvinenko, A.S. http://dspace.nbuv.gov.ua:80/handle/123456789/157446 2019-06-20T22:30:16Z 2019-01-01T00:00:00Z

The effect of X-ray irradiation on ultrasound attenuation and velocity in LiF single crystals Petchenko, O.M.; Petchenko, G.O.; Boiko, S.M.; Litvinenko, A.S. Using the pulsed method at a frequency of 7,5 MHz, the dependences of dislocation absorption and ultrasound velocity in LiF single crystals with residual deformation ε = 0,65 % at T = 300 K in the dose range of 0-1057 R were investigated. It has been established that, under conditions of crystals' irradiation with X-rays, the concentration of radiation centers fixing easily mobile dislocations significantly increases. As a result of limiting these dislocations' number, the attenuation of ultrasound decreases sharply, and its propagation velocity in the sample increases.

2019-01-01T00:00:00Z