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[IEEE 2018 Fourth International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB) - Chennai (2018.2.27-2018.2.28)] 2018 Fourth International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB) - PV Modules Based Grid Connected System Using Matlab Simulation
摘要： The Photovoltaic (PV) system can supply electric energy to the load by direct conversion of solar energy through photovoltaic (PV) effect. The process in which solar energy is converted into electrical energy is known as photovoltaic effect. It is depend on the different circumstance by different equations of current and voltage based on mathematical modeling. It gives current and voltage of PV module by different no. of cells and variation in irradiation and temperature. The PV cell output voltage boosts-up by the boost converter and the AC grid by DC/AC converter (inverter) control the power. This module can be further connected to the utility grid connected system for commercial and industrial application. It is provides precise modeling of P-V characteristics of solar system.
关键词： Solar Cell,Power Inverter,Photovoltaic systems,photovoltaic system,Solar Array,Solar Energy,modeling
更新于2025-09-10 09:29:36
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Optical and photoelectrochemical properties of Cu2SrSnS4 thin film fabricated by a facial ball-milling method
摘要： Earth-abundant and non-toxicity quaternary chalcogenide Cu2SrSnS4 is prepared by a facial ball-milling method. Its formation is revealed to be from the reaction between Cu2SnS3 and SrS at 600 oC. The bandgap of the prepared Cu2SrSnS4 film is speculated around 1.78 eV according to absorption test. The carrier lifetime of the prepared Cu2SrSnS4 film is about 2.06 ns. The photocurrent density of the Cu2SrSnS4 film is about 150 at -670 mV bias vs Ag/AgCl electrode and it repeats after 10 cycles of 1000 s. Its notable generation of photocurrent and photoelectrochemical stability indicates its potential for photoelectric conversion application.
关键词： Ball-milling,Thin films,Solar cell,Cu2SrSnS4,Optical,Solar energy materials
更新于2025-09-10 09:29:36
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Hot carrier transfer processes in nonstoichiometric titanium hydride
摘要： The absorber of the hot carrier solar cell (HCSC) needs to have a considerably reduced hot carrier thermalisation rate, in order to maintain the photo-generated hot carriers for enough time such that they can be extracted. The slow carrier cooling effect is predicted in materials in which the phononic band gap is sufficiently large to block the Klemens decay. Binary compounds with a large mass ratio between the constituent elements are likely to have large phononic band gap. Titanium hydride is one of these binary compounds that has the potential to become an absorber of the HCSC. Whilst a large phononic gap has been observed in stoichiometric TiH2, it has not been experimentally confirmed for hydrogen deficient TiHx (where x < 2). In this article, we report the phonon density of states of TiH1.65 measured using inelastic neutron scattering and presented to clearly show the phononic band gap. We also present the carrier thermalisation process of a TiHx (1< x <2) thin film by transient absorption, and estimate the carrier cooling time in this material.
关键词： titanium hydride,hot carrier solar cell,inelastic neutron scattering,transient absorption,phononic band gap
更新于2025-09-10 09:29:36
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Understanding Photoresponsive Catechol-based Polyoxotitanate Molecules: a Combined Experimental and First Principles Investigation
摘要： In this study, we employ a type of polyoxotitanate (POT) compound with a unique structure that is composed of a metal-oxo core and functionalized by catechol ligands, and characterize its electrochemical and photoresponsive properties. We find that the POT functionalized by the catechol ligand acts as a photoresponsive single source to provide the photocurrent in aqueous electrolyte. The first principles calculation confirms the intramolecular ligand-to-metal charge transfer characters. Considering the stable photocurrent output generated by the POT in the aqueous condition, we anticipate potential applications of the catechol-functionalized POT in the optoelectronic devices that require water stability and aesthetic features.
关键词： First Principles,Solar Cell,Photocurrent,Polyoxotitanate
更新于2025-09-10 09:29:36
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Rapid and sheet-to-sheet slot-die coating manufacture of highly efficient perovskite solar cells processed under ambient air
摘要： A nitrogen-free and slot-die coating fabrication of perovskite solar cells combined with NIR annealing. We develop a fabrication approach of planar inverted structured perovskite solar cell (PSC) in ambient condition with a PCE of 12.4% as compared to that (13.3%) of PSC fabricated in glove box filled with nitrogen. In addition, we demonstrate an alternative post-annealed method by near-infrared (NIR) radiation to traditional heating method by oven. The annealed time by NIR can be shortened from 1500 s to 30 s and the device performance over 10% can be achieved. The present work investigates the NIR effect for different layers in the two-step processing on the cell performance. The grazing-incidence wide-angle and small-angle X-ray scattering (GIWAXS and GISAXS) techniques for the perovskite layers are performed to reveal the crystalline and nano-morphological structures of perovskite layers correlated to thermal and NIR annealing effects. Based on this approach under ambient air, we scale up to the large-area fabrication using the slot-die coating. The performance of slot-die coated PSC can achieve to 12.3%. The critical step is the control of PbI2 layer thickness. We also applied the NIR radiation to the slot-die coated PSC and the PCE of 11.4% can be achieved. Our study paves a facile way to rapid manufacture and mass production of perovskite solar cells.
关键词： Perovskite solar cell,Two-steps,Near-infrared radiation,Slot-die,GIWAXS,GISAXS
更新于2025-09-09 09:28:46
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Rapid Deposition of Photocatalytically Enhanced TiO<sub>2</sub> Film by Atmospheric SPPS Using Ar/N<sub>2</sub>-Vortex Plasma Jet
摘要： In this study, as cost effective and an environmentally friendly film deposition technology, Atmospheric Solution Precursor Plasma Spray (ASPPS) was utilized for the deposition of the photo-catalytic titanium oxide (TiO2) film for the fabrication process of photovoltaic devices for rural electrification in developing countries. In addition, ethanol-diluted titanium tetra-iso-butoxide (TTIB: Ti(OC4H9)4) was used as a feedstock. N2-dominant Ar/N2 was also utilized as plasma working gas as well as for the elevation of the thermal plasma energy. By controlling deposition distances and temperature, using vortex generation anode nozzle operated at 1 kW, photo-catalytic TiO2 film was deposited and its crystallinity was confirmed by X-ray diffraction. Besides, the photo-catalytic properties of the film were confirmed by the methylene blue decolorization and the surface wettability tests. Surface morphologies of the TiO2 film was evaluated using optical micrographs. Furthermore, the film thickness and strength were measured using micro screw gauge and pencil scratch tester respectively. Lastly, when this Photo-catalytic TiO2 film was applied to photovoltaic devices, the device generated an open circuit voltage of 146.7 mV with solar irradiance intensity of 574 W/m2. From these results it was confirmed that, the ASPPS technology equipped with high cooling efficiency vortex anode nozzle is available for deposition of TiO2 film for the fabrication process of low-cost photovoltaic devices for rural areas in developing countries.
关键词： renewable energy,titanium oxide,photovoltaic devices,photo-catalysis,dye sensitized solar cell,thermal spray
更新于2025-09-09 09:28:46
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MEMS-Based Thermoelectric-Photoelectric Integrated Power Generator
摘要： This letter presents a novel MEMS-based thermoelectric–photoelectric power generator, which integrates a micro-scale thermoelectric generator (μ-TEG) and a solar cell on a single silicon chip by MEMS technology for the first time. To optimize the heat flux path of μ-TEG, one side of the thermocouple square array is on the interdigitated electrode of the solar cell and the other side is on the thick oxide passivation layer to realize thermal isolation. Moreover, the hot side and the cold side are insulated by a thick polyimide thermal insulating layer above the thermopile, and a series of square holes is created to enhance the thermal coupling between the thermopile and surrounding environment. Several common measures, like the back-surface field and oxide passivation layer with limited contact openings, are adopted for the design of the solar cell. All the measuring electrodes are on the same side of the device for the convenience of bonding wire and package. When a sputtered Al membrane covers the front side of the device, the maximum output voltage factor and the power factor of the μ-TEG are 0.149 V · cm?2 · K?1 and 3.03 × 10?3μW · cm?2 · K?2, respectively. When the front and back sides of device receive light, the measured photoelectric conversion efficiencies are 4.45% and 0.682%, respectively.
关键词： energy harvesting,μ-TEG,MEMS,Power generator,solar cell
更新于2025-09-09 09:28:46
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A Facile Strategy for Preparation and Application of Squaraine Nanometer Hybrids with Broad Band Absorption
摘要： Organic materials are receiving more attention in the solar cell due to their better solution process, controllable synthesis, tunable chemical and physical properties. However, the focus problem of compatibility and aggregation is to be solved urgently in organic materials, which inevitably limits them widely application. To this end, an inorganic-organic hybrid materials with wide-band absorption is designed and prepared, that incorporates octavinyl-polyhedral oligomeric silsesquioxane with 6-bromoquanaldine to produce H1, then reacts with squaric acid to design H2, which efficiently avoids the fluorescence quenching due to the steric hindrance. The electrochemical results shows that the energy level of H2 is match well with the commercial dye N719. Hence it shows a better photovoltaic performance based on dye-sensitized solar cell, along with power conversion efficiency up to 7.73 % when it is co-sensitized with N719. The hybrid system exhibits good performances in solar cell and long-term stability.
关键词： dye-sensitized solar cell,disaggregation,broad-band absorption,co-sensitizer
更新于2025-09-09 09:28:46
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[IEEE 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Paris, France (2018.10.14-2018.10.17)] 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Effective Series-Parallel Cell Configuration in Solar Panels for FPM Power Generation Forest
摘要： Three-dimensional (3D) Fibonacci number photovoltaic modules (FPMs), which are designed in part based on natural plant leaf phyllotaxis, have previously been proposed as a means of efficiently collecting solar energy over the course of a day. When multiple FPMs are installed in the same area, they can be arranged like trees in a forest. As part of efforts to realize such power generation forests, this study uses simulations and experiments to clarify the relationship between the cell configurations within a solar cell panel and the power generation that occurs when an adjacent FPM is installed.
关键词： shadow,FPM,solar cell module,3-dimensional photovoltaic module,cell configuration,power generation forest
更新于2025-09-04 15:30:14
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Effect of Physical Properties upon Hydrothermal Treatments on Titanium Dioxide Films
摘要： Titanium dioxide is used extensively as semiconductor since more than five decades. Hydrothermal method is one the method which widely used for the synthesis of TiO2 have been widely developed. The effect of hydrothermal temperatures on the titanium dioxide films is investigated. The TiO2 films were prepared by hydrothermally layering a mixture of aquadest, HCl and titanium(IV) isopropoxide over indium tin oxide glass, at 110, 150, 180 and 200 oC for 10 h. The film on the surface of indium tin oxide glass was calcined at 500 oC and characterized by X-ray diffraction, UV-visible spectroscopy and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) methods. The study shows that the TiO2 has a spherical morphology with the size between 0.5 to 2 μm. The TiO2 consits of rutile and anatase with the particle size ranging from 16.97 to 24.10 nm and from 18.09 to 26.75 nm, respectively. The band gap energy of TiO2 is between 3.17 to 3.48 eV.
关键词： Anatase,Hydrothermal,TiO2,Solar cell
更新于2025-09-04 15:30:14