· We report on six-junction inverted metamorphic (6J IMM) solar cells developed for concentrator applications. Monolithic III-V structures are grown by metal organic vapor phase epitaxy with junction bandgaps of 2.06, 1.70, 1.40, 1.16, 0.94, and 0.70 eV. The top three junctions are lattice-matched to the GaAs substrate, but the bottom
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· Abstract. This chapter summarizes the state of the art in instruments and methods for the characterization of concentrator multijunction (MJ) solar cells (MJSC). The current-voltage characteristic (I–V curve) under illumination and the spectral response or quantum efficiency (QE) are the main properties of a solar cell.
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· 1. Introduction Solar energy is a renewable and pollution-free energy source that can be generally applied to numerous fields. Such as, solar refrigeration and air conditioning (Cabrera et al., 2013), domestic hot water and space heating (D’Antoni and Saro, 2012), solar desalination (Sathyamurthy et al., 2017), solar power generation
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:Solar EnergySolar PanelsPublish Year:2016 · This paper gives a review of the work performed in the framework of the EC-funded project FULLSPECTRUM aiming for higher photovoltaic (PV) conversion
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· The transducer was composed of a neodymium-iron-boron magnet, a magnetic concentrator, and a two-layer, multi-cluster circular meander coil. The neodymium-iron-boron magnet was cylindrical and polarized in the axial direction to transmit the magnetic field lines in the axial direction (clockwise or counterclockwise).
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· To solve this problem, the study suggests combining a compound parabolic concentrator (CPC) solar collector with a TES system to improve heat transfer rates and minimize heat loss. The study examines the effect of different mass flow rates and HTF inlet temperatures on the integrated system's performance, evaluating energy efficiency,
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· Single junction concentrator solar cells operate at efficiencies that are surprisingly close to their one-sun equivalents cells; for the case of GaAs the 1-sun efficiency record stands at 28.8% while under concentration it stands at 29.3%.
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· The amount of electrical energy produced by a given solar photovoltaic module can be increased by using concentrated solar radiation. The task can be accomplished by integrating optical concentrators with flat PV modules. Compound parabolic concentrators
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· Section snippets Concentrator system description The HCPV system used in this study is located at the CEAEMA (Centre for Advanced Studies in Energy and Environment) of the University of Jaen in southern Spain (N 37 27′36″, W 03 28′12″). The HCPV modules
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· Innovative combination of optical concentrator and solar steam generation module. • Better yield of the system with water flux of 3.5 kg∙m −2 ∙h −1 under outdoor conditions. • Economizing of installation area and
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· A novel geometry of a 3-D static concentrator has been designed and coined the Square Elliptical Hyperboloid (SEH) to be integrated in glazing windows or facades for photovoltaic application. The 4× SEH is optically optimised for different incident angles of the incoming light rays. The optimised SEH is obtained by investigating its
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· Moreover, solar energy can be converted into thermal energy viable for domestic use in heating water and air, water desalination as well as numerous other well-documented applications [3]. Direct methods include photovoltaic (PV) systems and solar thermoelectric generators (STEG), which are supplemented by additional thermal
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· The spectral response of concentrator multijunction solar cells has been measured over a temperature range of 25–75 C. These data are combined with reference spectra representing the AM1·5 standard as well as annual spectral irradiance at representative geographical locations.
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Electronic film with embedded micro-mirrors for solar energy concentrator systems Mario Rabinowitz*a and Mark Davidsonb April 16, 2004 aArmor Research, Redwood City, CA 94062-3922 USA [email protected] bSpectel Research Corp., Palo Alto, CA 94303 USA [email protected]
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· Sun-tracking system plays an important role in the development of high solar concentration applications that directly convert the solar energy into thermal or electrical energy. Several methods of sun following have been surveyed and evaluated to keep the solar panels, solar concentrators, telescopes or other solar systems
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· The main objective of the present experimental work is to investigate thermal performance of CPC solar collector coupled with sensible and latent heat thermal energy storage (TES) system. Depending on obtained thermal stratification in sensible TES system, a commercial phase change material (PCM)—OM 65 has been selected and
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Finally, several CPV systems together with inverters, transformers, wiring, etc. form a CPV plant which is able to inject AC electricity to the grid. Differences in the architectures of PV and CPV plants result in different pros and cons for each technology. Nowadays, silicon-based PV dominates the solar market.
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:Solar EnergyLuminescence Solar ConcentratorsVisible Light · Abstract: A three-dimensional (3-D) distributed model for high-concentrator solar cells based on elementary units made up of electrical circuits is
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· Advanced Energy Materials is your prime applied energy journal for research providing solutions to today’s global energy challenges. Abstract Research on the luminescent solar concentrator (LSC) over the past thirty-odd years is reviewed.
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· Furthermore, the radius for 90% flux capture is 0.015 m when the CSR is equal to 0.05, and this radius is 0.02 m with the CSR of 0.8. A high concentration ratio usually means a lower cost receiver relative to the mirror area, but higher optical losses due to radiation from the circumsolar region missing the receiver.
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:Solar EnergySolar CellsPublish Year:2020 · Sun-tracking system plays an important role in the development of high solar concentration applications that directly convert the solar energy into thermal or
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· The solar concentrator consisting of prisms is a promising solution for clean energy collection. Concentrator design and allocation play a key role for efficien Kung-Jeng Wang, Shu-Hua Yang, Nguyen Dang Tien Dung; Design of a solar concentrator system for a green community—A dual-objective stochastic optimization
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· The Monte Carlo technique is a statistical approach to modelling propagation of photons through a system. Random numbers, cumulative distribution functions (CDFs) and probability density functions (PDFS) are used to sample from functions or spectra such as the solar AM 1.5. In this way the random number determines the fate
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· The method of eliminating the light escape from the vacuum tube interlayer of symmetric CPC is shown in Fig. 2 (a), existing studies have shown that the design of an equal-length "V"-shaped reflective plate under the absorber can achieve the purpose of eliminating the interlayer light leakage by the second reflection of the light escaping from
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· In 2017, Elashmawy (2017) developed a system of TSS with a parabolic concentrator solar tracking system (PCST-TSS). The yield was increased by 676% for the same tube length with a slight decrease in the system thermal efficiency.
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· Demonstrated here, for the first time, is that a diverse set of photon-driven transformations can be efficiently powered by solar irradiation with the use of solvent-resistant and cheap luminescent solar concentrator based photomicroreactors. Blue, green, and red reactors can accommodate both homogeneous and multiphase reaction
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· This paper describes performance of Bi 2 Ti 3 thermoelectric material through thermoelectric generator (TEG) for solar energy as input heat source in central India. Max. hot side temperature 206 °C, cold side temperature 43 °C, TEG output voltage of 9.5 V instead of 12 V (rated), TEG no load current of 0.09A at a beam radiation of 510
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concentrator cells. The unavailability of a lattice-matched 1eV subcell has limited the development of standard upright 4-junction cells from achieving the desirable bandgap combina-tion for ultra-high conversion efficiency. 3. Technology pathways for III–V
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:PhotovoltaicsPublish Year:2012 · A Luminescence Solar Concentrators (LSC) [1], [2] is a simple light energy absorber, converter, and concentrating device consisting of a thin slab of a transparent
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· Abstract. This paper presents a modification of parabolic concentrator (PC) – solar still with continuous water circulation using a storage tank to enhance the productivity. Four modes of operation were studied experimentally: (i) PC-solar still without top cover cooling; (ii) PC-solar still with top cover cooling, PC-solar still integrated
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