Search academic texts

Information × Registration Number 0223U004794, 0120U104964 , R & D reports Title Light-generating low-dimensional structures with polarized luminescence based on organic and inorganic materials popup.stage_title Head Karbovnyk Ivan D., Доктор фізико-математичних наук Registration Date 04-12-2023 Organization Ivan Franko National University of Lviv popup.description2  Research object – organic-inorganic hybrid LED nanostructures. The purpose of the work – obtaining organic-inorganic light-emitting structures and studying the course of electronic processes in them in order to manufacture on their basis innovative polarized OLED devices. Research methods – optical spectroscopy, X-ray diffraction, atomic force microscopy, electron microscopy, computer modeling. Samples of thin films of aluminum triquinolinate, dicyanomethylenepyran and its derivatives were obtained by the method of thermal vacuum evaporation on glass substrates placed perpendicularly and at an acute angle to the vapor flow of the deposited substance. Alq3 films obtained by oblique angle deposition exhibit significant polarized luminescence, which the authors attribute to the columnar structure of such a film revealed by atomic force microscopy. The new composite materials based on ZnO microstructures and Alq3 thin film, synthesized by the authors, show enhanced photoluminescence, and the composite based on ZnO microdiscs and Alq3 thin film on a silicon substrate exhibits a higher degree of photoluminescence polarization than each of the components separately. A new composite based on silver island films and aluminum triquinolinate thin films deposited perpendicularly and at an acute angle to the vapor flow show an increase in the photoluminescence intensity of the composite materials compared to pure aluminum triquinolinate films, which is associated with the local field enhancement predicted by the simulations. Experimental samples of light-emitting devices with polarized luminescence based on thin films of dicyanomethylenepyran and aluminum triquinolinate deposited on a glass substrate covered with a transparent conductive layer of ITO were created. Product Description popup.authors Vasilyev Vladyslav S Karbovnyk Ivan Dmytrovych Klym Halyna І. Krupych Andriy Kushnir Oleksii O Olenych Yuriy I. Sadovij Bohdan Stepanovych Turko Borys Ihorovych popup.nrat_date 2023-12-04 Close