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Wyświetlanie 1-15 z 97
Tytuł:
Characterization of a solar cell by varying illumination
Autorzy:
Kołodziej, Andrzej
Kołodziej, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1402388.pdf
Data publikacji:
2020
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:
thin films
solar cell measurement
silicon
I–V characteristic
varying illumination
cienkie warstwy
pomiar ogniw słonecznych
krzem
oświetlenie zmienne
Opis:
This work aims to confirm that the single-diode model of a monocrystalline cell can be used successfully also for thin-film solar cells when their basic parameters are calculated using the method of changing illumination. The authors describe the experimental procedure, in which I–V curves of thin-film solar cells are measured when illumination levels are changing. In experiments, a fully reflective 500 W solar simulator is used as an excellent broadband white light source, which provides the range of 0.01–10 Sun settings.
Źródło:
Science, Technology and Innovation; 2020, 10, 3; 8-14
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of shading on solar cell electrical parameters
Autorzy:
Swatowska, B.
Panek, P.
Powiązania:
https://bibliotekanauki.pl/articles/173520.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
solar cells
shading
electrical parameters
efficiency
Opis:
Availability of light to solar cells is crucial for the efficiency of photovoltaic systems. For this reason, even partial shading can result in significant reduction of generated electric power (loss of current). This paper examines the changes in the efficiency of multicrystalline silicon solar cells which are caused by different kinds of shading. Full and partial shading were simulated by the use of three types of shutter-foils printed in a gray and black scale. The measurements of current-voltage characteristics show that totally or partially shaded modules can drastically reduce the generated power. Short circuit current decreases from about 8100 to 100 mA that in the case of the series connection of cells in a module, lead to the shift of the point of the maximum power and finally to the considerable reduction of nominal system photovoltaic power.
Źródło:
Optica Applicata; 2017, 47, 2; 319-323
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temperature Effect on Performance of Different Solar Cell Technologies
Autorzy:
Adeeb, Jehad
Farhan, Alaa
Al-Salaymeh, Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/124356.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
solar cell
photovoltaics
temperature effect
multicrystalline silicon solar cell
amorphous silicon solar cell
monocrystalline
Opis:
One of the main parameters that affect the solar cell performance is cell temperature; the solar cell output decreases with the increase of temperature. Therefore, it is important to select the proper solar cell technology that performs better at a specified location considering its average temperatures. In addition, the solar cell performance is directly reflected on the overall economics of the project. This paper is proposed to evaluate the variations in the performance of different solar cell technologies related to the temperature in Amman, Jordan. Field data of weather station and three PV systems (Poly-crystalline, Mono-crystalline and Thin-film) of identical design parameters were collected from Test Field Project at Applied Science Private University, Shafa Badran, Amman, Jordan. These data were analysed in the following way. estimated specific energy yield (kWh/kWp) for the three different PV systems was calculated depending on the measured value of solar irradiance and technical specifications of the installed solar panels and inverters, then the actual energy yield at different temperatures over one year was compared with the estimated value, so the deviations could be determined and actual temperature coefficients for energy yield could be calculated, knowing that the three PV Systems have identical design parameters (tilt angle, azimuth angle, type and dimensions of mounting structure and inverter size) and same cleaning method and schedule. It was found that the thin-film solar panels are less affected by temperature with temperature coefficient of -0.0984%, and -0.109%, -0.124% for Mono-crystalline and Poly-crystalline respectively. These results can be implemented in the preliminary design steps, specifically in the selection of the solar cell technology to be installed in a specific location.
Źródło:
Journal of Ecological Engineering; 2019, 20, 5; 249-254
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Higher Solar Cell Efficiency Achieved with ZnO/Si heterojuction
Autorzy:
Ayad, jumaah kadhim
Muneer, H. Jaduaa Alzubaidy
Abd, Ahmed N.
Powiązania:
https://bibliotekanauki.pl/articles/1161880.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
AFM
XRD
ZnO/Si
chemical method
conversation efficiency
solar cell
Opis:
In this work, the zinc oxide nanoparticles were prepared chemically and deposited by casting style on glass bases and treated thermally at a temperature of 600 °C. The study focused on Optical and structural properties of thin films. An optical advantages of Zinc Oxide (ZnO) were characterized by using ultraviolet visible Spectroscopy. And the structure by using X-Ray Diffraction and (AFM). The optical advantages of thin films were studied by recording the transmittance spectra of wavelengths range (300-900 nm). The energy gap was calculated using tauc equation and is found (3 eV). I-V properties of the solar cell under light at 40 mW/cm2 flounce was investigated. The open circuit Voltage (Voc) was 33 and Short-circuit density (Isc) was 0.017 mA. This measurements show that the fill factor (F.F) and conversation efficiency (η), were 55% and 9.9% respectively.
Źródło:
World Scientific News; 2018, 112; 226-234
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solar Cell Emitters Fabricated by Flash Lamp Millisecond Annealing
Autorzy:
Prucnal, S.
Shumann, T.
Skorupa, W.
Abendroth, B.
Krockert, K.
Möller, H.
Powiązania:
https://bibliotekanauki.pl/articles/1503796.pdf
Data publikacji:
2011-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
88.40.jj
78.55.-m
78.30.Am
78.55.Ap
Opis:
Phosphorus ion implantation was used for the emitter formation in mono- and multicrystalline silicon solar cells. After ion implantation the silicon is strongly disordered or amorphous within the ion range. Therefore subsequent annealing is required to remove the implantation damage and activate the doping element. Flash-lamp annealing offers here an alternative route for the emitter formation at overall low thermal budget. During flash-lamp annealing, only the wafer surface is heated homogeneously to very high temperatures at ms time scales, resulting in annealing of the implantation damage and electrical activation of phosphorus. However, variation of the pulse time also allows to modify the degree of annealing of the bulk region to some extent as well, which can have an influence on the gettering behaviour of metallic bulk impurities. The μ-Raman spectroscopy showed that the silicon surface is amorphous after ion implantation. It could be demonstrated that flash-lamp annealing at 800°C for 20 ms even without preheating is sufficient to recrystallize implanted silicon. The highest carrier concentration and efficiency as well as the lowest resistivity were obtained after annealing at 1200°C for 20 ms both for mono- and multicrystalline silicon wafers. Photoluminescence results point towards P-cluster formation at high annealing temperatures which affects metal impurity gettering within the emitter.
Źródło:
Acta Physica Polonica A; 2011, 120, 1; 30-34
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Characterization of ZnO/p-Si Heterojunction Solar Cell
Autorzy:
Habubi, Nadir F.
Mousa, Abdulazeez O.
Powiązania:
https://bibliotekanauki.pl/articles/1193961.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
chemical spray pyrolysis
heterojunction solar cell
n-ZnO/p-Si
Opis:
Zinc oxide thin films was deposited by chemical spray pyrolysis (CSP) at 400 °C substrate temperature and different thickness (60, 80, and 100) nm on the texturized p-Si wafer to fabricate ZnO/p-Si heterojunction solar cell. Structural, optical, electrical and photovoltaic properties are investigated for the samples. XRD analysis reveals that all the as deposited ZnO films show polycrystalline structure, without any change due to increase of thickness. Average diameter calculated from AFM images shows an increase in its value with increasing thickness, ranging from 59.82-95.7 nm. The optical reflections for samples are measured using UV-Vis spectrophotometer. Photoluminescence (PL) spectra of (CSP) grown ZnO/p-Si with different thickness were used to study the energy gap. The electrical properties of heterojunction were obtained by I-V (dark and illuminated) and C-V measurement. I-V characteristic of the ZnO/p-Si heterojunction shows good rectifying behavior under dark condition. The ideality factor and the saturation current density was calculated. Under illuminated the photovoltaic measurements (open-circuit voltage (Voc), short-circuit current density (JSC), fill factor (FF), and quantum efficiencies are calculated for all samples. The built- in potential (Vbi), carrier concentration and depletion width are determined under different thickness from C-V measurement.
Źródło:
World Scientific News; 2015, 18; 78-92
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication of Dye Sensitized Solar Cell Based on Natural Photosensitizers
Autorzy:
Nirmala, M.
Sahana, S.
Iswarya, B.
Maruvarasi, K.
Jenita, A. Adline
Kavitha, B.
Powiązania:
https://bibliotekanauki.pl/articles/1031877.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Efficiency
FTIR spectroscopy
Functional
Natural Dyes
Solar cell
nanocrystalline materials
nanocrytalline titanium dioxide
Opis:
Dye Sensitized solar cells were fabricated using with natural extracts and TiO2 is used as a semiconducting layer. The layer of nanocrytalline titanium dioxide was deposited on conductive side of the transparent Fluorine doped Tin Oxide (FTO) glass plate and the other side of the plate is coated with graphite. Voltage and Current values are measured for natural dyes coated FTO plate and I-V characteristic curves of all fabricated cells were drawn and analyzed. The highest power conversion efficiencies of Blueberry (0.79872%) and Beetroot (0.745813 %.) dyes were achieved among 10 dyes. The functional groups of Beetroot and Turmeric natural dyes were confirmed under FTIR spectroscopy. The ease and cost efficiency of the overall fabrication process, extensive availability of these fruits/juices render them novel and low-cost candidates for Solar cell applications.
Źródło:
World Scientific News; 2020, 149; 128-139
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modern third generation solar photovoltaic technology: dye sensitized solar cell
Autorzy:
Banne, Chiranjeev
Powiązania:
https://bibliotekanauki.pl/articles/1819189.pdf
Data publikacji:
2020
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
photovoltaic
dye sensitized solar cell
DSSC
silicon photovoltaic cell
solar energy
fotowoltaika
barwnikowe ogniwa fotowoltaiczne
fotoogniwo krzemowe
energia słoneczna
Opis:
Depleting conventional energy resources are forcing the world to search for new and renewable energy resources. Solar energy is one of the potent and abundant energy resource .To use the solar energy to its fullest along with conventional technology has specific limitations. These limitations can be eliminated by use of Dye Sensitized Solar Cell (DSSC). DSSC can be seen as promising future technology. It is advantageous over Silicon (Si) based Photovoltaic (PV) cell in terms cost, easy manufacturing, stability at higher temperature, aesthetics, etc. Also it works in indoor conditions i.e. diffused sunlight which nearly not feasible with conventional PV cells. Now Research and Development Departments of many countries like Japan, Germany, USA, Switzerland, India, China and many firms like G-Cell, Oxford PV, Sony, TATA-Dyesol are working on DSSC to improve its various aspects so as to make it more applicable in various conditions. The paper will discuss the concept, construction, working of DSSC. Also it will illustrate current applications of DSSC.
Źródło:
Journal of Mechanical and Energy Engineering; 2020, 4, 2; 173--178
2544-0780
2544-1671
Pojawia się w:
Journal of Mechanical and Energy Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Noise and optical spectroscopy of single junction silicon solar cell
Autorzy:
Skvarenina, L.
Macku, R.
Powiązania:
https://bibliotekanauki.pl/articles/220371.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-destructive diagnostics
c-Si solar cells
1/f noise
electroluminescence
lock-in IR thermography
Opis:
Noise spectroscopy as a highly sensitive method for non-destructive diagnostics of semiconductor devices was applied to solar cells based on crystalline silicon with a view to evaluating the quality and reliability of this solar cell type. The experimental approach was used in a reverse-biased condition where the internal structure of solar cells, as well as pn-junction itself, was electrically stressed and overloaded by a strong electric field. This gave rise to a strong generation of a current noise accompanied by local thermal instabilities, especially in the defect sites. It turned out that local temperature changes could be correlated with generation of flicker noise in a wide frequency range. Furthermore, an electrical breakdown in a non-stable form also occurred in some specific local regions what created micro-plasma noise with a two-level current fluctuation in the form of a Lorentzian-like noise spectrum. The noise research was carried out on both of these phenomena in combination with the spectrally-filtered electroluminescence mapping in the visible/near-infrared spectrum range and the dark lock-in infrared thermography in the far-infrared range. Then the physical origin of the light emission from particular defects was searched by a scanning electron microscope and additionally there was performed an experimental elimination of one specific defect by the focused ion beam milling.
Źródło:
Metrology and Measurement Systems; 2018, 25, 2; 303-316
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Electromotive Force Dependence on the Polycrystalline Silicon Solar Cell Illuminance
Autorzy:
Jukna, A.
Miškinis, P.
Valuntaitė, V.
Bogdanovičius, A.
Powiązania:
https://bibliotekanauki.pl/articles/1400558.pdf
Data publikacji:
2015-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
88.40.H-
88.40.jj
88.40.hj
88.40.fc
Opis:
The impact of illuminance on changes of the solar cell electromotive force is analyzed. A mathematical model for a solar cell electromotive force dependence on illuminance is presented. For this purpose, a selection of experimental data trend function was carried out, and the Pearson correlation coefficients were established. The most optimal results were obtained in case of an exponential function with the strongest correlation ($R^2$=0.983). The analysis has shown that at 100 W/m^2 illuminance the electromotive force saturation is obtained (the electromotive force changes insignificantly and fluctuates at around 2 V), which indicates that upon reaching such an illuminance a solar cell operates at maximum efficiency. A first-order differential equation satisfied by the trend function has been compiled. When interpreting illuminance as an evolution variable, the proposed mathematical model can be interpreted as a dynamical system. The deviation frequency spectrum of the measurement values with respect to the theoretical prediction is analyzed.
Źródło:
Acta Physica Polonica A; 2015, 127, 6; 1711-1716
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metal-titanium oxide / quantum dot porous silicon / silicon-metal solar cell
Autorzy:
Abd, Ahmad Naji
Mishjil, Khudheir A.
Abdulsada, Ali Hamid
Habubi, N. F.
Powiązania:
https://bibliotekanauki.pl/articles/1177996.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
AFM
FTIR
TiO2
X-Ray diffraction
XRD
electrochemical etching p-type silicon wafer
nanocrystalline porous silicon
Opis:
In this paper, the nanocrystalline porous silicon (PSi) films are prepared by electrochemical etching of p-type silicon wafer with current density 7 mA/cm2 and etching times on the formation nano-sized pore array with a dimension of around different etching time. The films were characterized by the measurement of XRD, FTIR spectroscopy and atomic force microscopy properties (AFM). We have estimated crystallites size from X-Ray diffraction about nanoscale for porous silicon and Atomic Force microscopy confirms the nanometric size Chemical fictionalization during the electrochemical etching show on the surface chemical composition of PS. The etching possesses inhomogeneous microstructures that contain a-Si clusters (Si3–Si–H) dispersed in amorphous silica matrix. From the FTIR analyses showed that the Si dangling bonds of the as-prepared PS layer have large amount of Hydrogen to form weak Si–H bonds. The atomic force microscopy investigation shows the rough silicon surface, with increasing etching process (current density and etching time) porous structure nucleates which leads to an increase in the depth and width (diameter) of surface pits. Consequently, the surface roughness also increase.
Źródło:
World Scientific News; 2018, 96; 134-148
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soft Chemistry - Synthesis of Nano-Titanium-Doped-Tellerium-Cadmium for Solar Cell Applications
Autorzy:
Elsabawy, Khaled M.
Powiązania:
https://bibliotekanauki.pl/articles/1192983.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sol-Gel
Hydrolysis
AFM
XRD
Microstructure
SEM
Opis:
Soft chemistry procedures through sol–gel technique has applied to synthesize nano- Ti-doped CdTe composite. Gels were synthesized by the hydrolysis of a complex solution of Si(OC2H5)4, Cd(CH3COO)2•2H2O, Ti(CH3COO)4 and Te were heated from 350 to 600 °C in a H2─N2 atmosphere to form fine cubic CdTe doped crystals. The size of CdTe crystals, determined from the line broadening of X-ray diffraction pattern, increases from 6 to 21 nm in diameter with increasing heat-treatment temperature. Micro-structural features of Ti-doped CdTe crystals were characterized by both of AFM and SEM investigations . The analysis of micro-structural micrographs of both of SEM and AFM indicated that titanium additions improved the crystal growth of grain towards more lower grain size which ranged in between 1.4-2.5 μm while 0.67 μm through Scherrer’s calculations.
Źródło:
World Scientific News; 2016, 36; 61-72
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of hybrid Ge QDs/Si nanowires solar cell with improvement in cell efficiency
Autorzy:
Olyaee, S.
Farhadipour, F.
Powiązania:
https://bibliotekanauki.pl/articles/173979.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
nanowire
absorption
FDTD
hybrid structure
thin-film
cylindrical quantum dots
Opis:
In this paper, the structure of a high-efficiency solar cell is presented by using a combination of quantum dots of germanium arrays and silicon nanowires on a thin film silicon layer. Due to the low absorption coefficient of silicon, this type of solar cell does not have high efficiency. According to the capability of the quantum structure in absorbing the incident photons and the generation of electron-hole pairs, this structure is proposed. Moreover, nanowires as an appropriate suggestion are applied in our work aiming to improve light scattering and optical photon absorption for the generation of carriers. Both of the electrical and optical characteristics of the solar cell are calculated by using a finite-difference time-domain method. Owing to the change of the nanowire length and increasing the number of quantum dot in our work, maximum power absorption is achieved. The achieved results provide a considerable improvement in efficiency and short-circuit current density. The efficiency is improved up to 17.5% and the short-circuit current density in the active layer of thickness 1170 nm has been provided to be 42.6 mA/cm2. The open circuit voltage for this cell is calculated to be 0.47 V. The achieved results provide a considerable improvement in efficiency and short-circuit current density in comparison with previously published method.
Źródło:
Optica Applicata; 2018, 48, 4; 633-645
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of natural dyes for the fabrication of dye-sensitized solar cell: a review
Autorzy:
Bhargava, Cherry
Sharma, Pardeep Kumar
Powiązania:
https://bibliotekanauki.pl/articles/2086868.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DSSC
dye-sensitized solar cell
efficiency
natural dye
performance
synthetic dye
ogniwo słoneczne uczulane barwnikiem
wydajność
barwnik naturalny
barwnik syntetyczny
Opis:
The increasing concern for worldwide energy production is the result of global industrialization and decreasing energy resources. Despite the cost factor, solar energy continues to become more popular due to its long-term nature as a resource and growing conversion efficiency. A dye-sensitized solar cell converts visible light into electricity. The efficient use of dye as a sensitizer is the critical factor in enhancing the performance of the dye-sensitized solar cell. Natural dyes are found in abundance in leaves, flower petals, roots, and other natural resources. Due to the advantages of natural dyes such as cost-effectiveness, the simpler extraction process, and being environmentally friendly, etc., researchers are working extensively to replace synthetic dyes with natural ones. This paper highlights the various types of natural dyes and their effect on the efficiency of the dye-sensitized solar cell.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 6; e139319, 1--12
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on silicon solar cell capacitance and its dependence on both temperature and incidence angle
Autorzy:
Sané, M
Barro, F I
Powiązania:
https://bibliotekanauki.pl/articles/102664.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
vertical junction
capacitance
temperature
incidence angle
Opis:
The aim of this work is to investigate a theoretical study of a vertical junction silicon solar cell capacitance under monochromatic illumination. By solving the continuity equation and using a one dimensional model in frequency modulation, we derive the analytical expressions of both excess minority carrier density and photovoltage. Based on these expressions, the solar cell capacitance was calculated; we then exhibited the effects of both temperature and incidence angle on the solar cell capacitance.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 24; 9-12
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 97

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