Browsing by Author "Sybilski, P."

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    Hydrogen generation by light-induced water splitting using ZnO single crystals
    (Видавництво Львівської політехніки, 2012) Suhak, Yu.; Izdebska, K.; Skupiński, P.; Kowalski, B. J.; Mycielski, A.; Soszko, M.; Suchocki, A.; Reszka, A.; Sybilski, P.
    This paper presents experimental results of implementation of ZnO single crystals as photoanodes in photoelectrochemical (PEC) cells for hydrogen generation from water splitting. Both, as-grown and annealed in oxidizing atmosphere ZnO single crystals were investigated. It was found that as-grown ZnO single crystals possess much higher conversion efficiencies than annealed in O2. The photocurrent density was found to increase significantly with the increase of external bias applied and excitation light intensity.
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    ZnMgO:Al anode layer for organic light emitting diode based on carbazole derivative
    (Видавництво Львівської політехніки, 2012) Luka, G.; Volyniuk, D.; Tomkeviciene, A.; Simokaitiene, J.; Grazulevicius, J. V.; Stakhira, P.; Cherpak, V.; Sybilski, P.; Witkowski, B. S.; Godlewski, M.; Guziewicz, E.; Hotra, Z.; Hotra, O.
    We demonstrate the fabrication and properties of an near ultraviolet organic light emitting diode (UV OLED) that contains 2,7-di(9-carbazolyl)-9-(2-ethylhexyl)carbazole organic emitting layer and aluminumdoped magnesium zinc oxide (ZnMgO:Al) layer as transparent electrode. The obtained ZnMgO:Al layer is transparent for the wavelengths longer than 325 nm and has low resistivity of the order of 10-3 cm. The UV OLED device turns on at the applied voltage of 9 V.