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Elektronika : konstrukcje, technologie, zastosowania
EN Emission of NIR light from Yb³⁺ ions after excitation of the Tb³⁺ was observed indicating existence of transfer mechanisms. Relative intensities of these down-conversion and down-shifting via single Yb³⁺ ion mechanisms is yet to be established. Efficient down-shifting resulting in visible light emis[...]
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Elektronika : konstrukcje, technologie, zastosowania
EN This paper presents the influence of the AP-MOVPE epitaxial process growth temperature on the optical and structural properties of heterostructures containing InGaAsN quantum wells. The best optical and structural features were observed for MQW structure grown in highest temperature. This structure [...]
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Opto - Electronics Review
EN In the paper basic design rules and possible applications of specialised autonomous adata acquisition systems (DAS) in photovatics (PV) are discussed. Their usefulness for both estimation of PV modules rating and prediction of the overall PV system actual performance, especially at strongly changeab[...]
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Opto - Electronics Review
EN The purpose of work is to improve the performance of standard screen - printed silicon solar cells by incorporating a method by forming a porous silicon (PS) layer on the top surface of large area n+/p monocrystalline, multicrystalline and textured silicon solar cells by electrochemical etching in[...]
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Wiadomości Elektrotechniczne
PL Opisano możliwości wykorzystania na Lubelszczyźnie najlepszego w kraju średniorocznego nasłonecznienia i usłonecznienia dla celów fotowoltaiki.
EN The author describes a possibility of photovoltaic utilization of insolation in Lublin district, where its year average value is the best in Poland.
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TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
EN The power output of a PV system changes in time during the day and strongly depends on the location and orientation of the photovoltaic module as well as on seasonal conditions. Clouds occurring during a partly cloudy day are the reason why this data is very irregular and difficult to analyze in ter[...]
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Journal of Ecological Engineering
EN Mankind’s misgivings caused by the depletion of fossil fuels have accelerated research on obtaining energy from unconventional sources. One such source is the Sun. The present article reviews the possibility of using solar energy, converted in batteries of photovoltaic cells into electricity, in agr[...]
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Opto - Electronics Review
EN Photovoltaic (PV) technologies which play a role in PV market are divided into basic two types: wafer-based (1st generation PV) and thin-film cell (2nd generation PV). To the first category belong mainly crystalline silicon (c-Si) cells (both mono- and multi-crystalline). In 2015 around 90% of the s[...]
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Journal of Ecological Engineering
2016 Vol. 17, nr 5 147--154
EN Photovoltaic (PV) systems form two groups: grid-connected ones and stand-alone ones. The first group can be divided into: centralized systems with large power (PV farms), and decentralized systems with low-power (especially prosumer ones). The second group includes systems with electric buffer sourc[...]
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Opto - Electronics Review
EN A simple method of maximum power point tracking for photovoltaic generator feeding magnetoelectric DC-current motor in stand-alone photovoltaic drive system, without a buffer energy source, has been described in this paper. The specific quality of this method is assuring the maximum power working po[...]
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Ecological Chemistry and Engineering. S
EN In this paper possibilities and limits of use of solar energy (like the best efficiencies of PV cells, world records and ‘notable exceptions’) were shown. Also some new ideas and concepts in photovoltaics (like new photovoltaic power plants or energy storage) were presented. Additionally authors try[...]
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Electrical Power Quality and Utilisation. Journal
EN This paper presents analytical and computer aided investigations on photovoltaic (PV) - generators connected to DC/DC converters for module integrated inverters. It shows the controllability and describes how to design the converters regarding requirements such as a wide variable input voltage range[...]
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International Journal of Electronics and Telecommunications
EN Photovoltaic (PV) technology is an attractive power source for systems with no wired connections to any network. Because of seasonal variations of solar irradiation, designing such a system requires careful analysis in order to provide required level of reliability. In this paper we present results [...]
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Opto - Electronics Review
2017 Vol. 25, No. 4 274--284
EN In this work, two thermal- and air-stable, hole transporting materials (HTM) in perovskite solar cells are analyzed. Those obtained and investigated materials were two polyazomethines: the first one with three thiophene rings and 3,3’-dimethoxybenzidine moieties (S9) and the second one with three th[...]
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Computer Applications in Electrical Engineering
2014 Vol. 12 452--461
EN The paper presents the economic aspect of use two - axis Sun tracking systems compared with stationary units in photovoltaics on the basis of own annual measurements of electrical energy for local urban conditions. The results were scaled to maximum power of 10 kWp. Electricity consumptio[...]
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Autobusy : technika, eksploatacja, systemy transportowe
2011 R. 12, nr 10 323-328
PL Fotowoltaika jest jedną z najczystszych form wytwarzania energii elektrycznej. Opiera się ona na zjawisku na konwersji promieniowania słonecznego w prąd elektryczny. Początki praktycznego wykorzystania tego sposobu wytwarzania energii wiążą się z epoką podboju kosmosu. Postęp technologiczny sprawił[...]
EN Photovoltaics is one of the cleanest forms of electricity generation. It is based on the phenomenon of conversion of sunlight into electricity. The origins of the practical use of this method of energy production are associated with the space conquest era. Technological progress has made it in the f[...]
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Prace Instytutu Elektrotechniki
2012 Z. 259 29--30
PL Na podstawie dokonanego przeglądu literatury i badań własnych przedstawiono różne rodzaje ogniw słonecznych stosowanych w fotowoltaice organicznej. Prace badawcze dotyczące rozwoju fotowoltaiki organicznej prowadzone są obecnie w trzech głównych kierunkach: (i) poszukiwanie nowych polimerów, jak też[...]
EN In this work based on the literature and own research different kinds of organic solar cells are presented. Research works concerning the development of organic photovoltaics are at present in three main directions: (i) the synthesis of new polymers and small compounds as the active layer of the sol[...]
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TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
EN The electrical current-voltage (I-V) characteristic a of photovoltaic (PV) module depends on the environmental conditions under which it operates. The shape of the I-V curve depends on the solar cell technology and changes dynamically in time with irradiance and temperature. A simulation model of th[...]
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Prace Instytutu Elektrotechniki
2014 Z. 264 81-90
PL Omówiona została zasada działania organicznych ogniw fotowoltaicznych na przykładzie ogniw jedno- i dwuwarstwowych. Przedstawione zostały procesy prowadzące do fotogeneracji swobodnych nośników ładunku w układach organicznych, ze szczególnym uwzględnieniem procesu dyfuzji oraz dysocjacji ekscytonu n[...]
EN This article explains operational principles of organic solar cells for one-layer and bilayer planar devices. A short description of processes leading to photogeneration of free charge carriers, with special emphasis on exciton diffusion to a junction of two materials followed by exciton dissociatio[...]
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Prace Instytutu Elektrotechniki
2014 Z. 264 5-13
PL Mimo znaczącej redukcji kosztów paneli fotowoltaicznych (PV), cena energii wytwarzanej przez baterie słoneczne ciągle jest za wysoka. Możliwe są dwie strategie rozwiązania tej sytuacji – (a) podniesienie wydajności konwersji światła w komórkach fotowoltaicznych lub/i (b) obniżenie kosztów paneli PV [...]
EN Despite of a large reductions of costs energy produced by solar panels is still too expensive. There are two approaches to change this situation: by (a) increase of device output and/or (b) reduction of device costs by use of cheaper alternative materials. In this article we discuss the latter appro[...]
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