https://repository.utm.md/handle/5014/4515 2026-04-19T14:32:49Z https://repository.utm.md/handle/5014/8907 Influence of Ag, Sb or Ge doping on short-range order of As-S chalcogenide glasses REVUTSKA, L.; STRONSKI, A.; SHPORTKO, K.; PAIUK, O.; GUDYMENKO, O.; GUBANOVA, A. In this work X-ray diffraction (XRD) technique is employed to investigate the structural properties amorphous As-S-Sb, As-S-Ag and As-S-Ge chalcogenide glasses. The aim of this study is to perform analysis of parameters of short-range order of the As-S amorphous alloys doped with Ag, Sb and Ge. 2019-01-01T00:00:00Z https://repository.utm.md/handle/5014/6479 Surface plasmon resonance in As2Se3 planar waveguides for the IR spectral region POPESCU, A.; BASCHIR, L.; SAVASTRU, D.; IOVU, M.; STAFE, M.; PUSCAS, N. The solid amorphous materials have some specific optical properties who cannot be finded in the crystalline state. One of the main phenomenon is photo-induced modification of optical constants (n, k), which can be used in various optoelectronic devices. Unfortunately, the changes, though largely dependent on the material, are not very large. This fact limits in many cases possible applications. An efficient solution to the problem consists in achieving a resonance structure, when small changes in optical constants lead to a considerable change in transmission or optical reflection. Such a structure would be the surface plasmon resonance, usually realized in Kretschmann configuration. Abstract 2019-01-01T00:00:00Z https://repository.utm.md/handle/5014/6478 Efficient and stable hybrid solar cells of nanostructures and bulk heterojunction Organic semiconductors RAM, K. S.; SINGH, J. The research and development in the field of organic photovoltaic have gained huge research interests recently. The organic solar cells have exhibited a power conversion efficiency (PCE) up to 12 % . Organic solar cells (OSCs) are very economical to produce by very cost effective and low temperature based chemical processes. In addition, OSCs can be fabricated as thin flexible films and hence require less amount of raw materials. Abstract 2019-01-01T00:00:00Z https://repository.utm.md/handle/5014/6477 Study of surface plasmon polarization conversion with Au surface-relief gratings INDUTNYI, I.; MYN’KO, V.; SOPINSKYY, M. The effect of polarization conversion (PC) caused by excitation of surface plasmons on metal gratings was studied in many theoretical and experimental works. However, these studies mainly concerned the samples with spatial period (d) greater than the excitation wavelength (λ). Here we report the results of experimental studies of plasmon-stimulated PC for Au gratings with different d/λ ratios and different relief depth (h). Abstract 2019-01-01T00:00:00Z