Compact spectrum splitting photovoltaic module with high efficiency

McCambridge, J.D.; Steiner, Myles A.; Unger, Blair; Emery, Keith; Christensen, Eric L.; Wanlass, M. W.; Gray, A.L.; Takacs, Laszlo; Buelow, Roger; McCollum, Timothy A.; Ashmead, James W.; Schmidt, Greg; Haas, A. W.; Wilcox, J. R.; Meter, James van; Gray, J.L.; Moore, Duncan T.; Barnett, Allen; Schwartz, R. J.

doi:10.1002/pip.1030

Cited by 91 publications

(44 citation statements)

References 15 publications

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“…1). 9 The dispersion approach applies a transmission type optics, which consists of either prisms or diffraction gratings to laterally split the incident spectrum at a receiver plane (Fig. 2).…”

Section: Evaluating Spectrum-splitting Systemmentioning

confidence: 99%

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Design and fabrication of cascaded dichromate gelatin holographic filters for spectrum-splitting PV systems

Chrysler

Kostuk

2018

J. Photon. Energy

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, "Design and fabrication of cascaded dichromate gelatin holographic filters for spectrum-splitting PV systems," J. Photon. Energy 8(1), 017001 (2018), doi: 10.1117/1.JPE.8.017001. Abstract. The technique of designing, optimizing, and fabricating broadband volume transmission holograms using dichromate gelatin (DCG) is summarized for solar spectrum-splitting applications. The spectrum-splitting photovoltaic (PV) system uses a series of single-bandgap PV cells that have different spectral conversion efficiency properties to more fully utilize the solar spectrum. In such a system, one or more high-performance optical filters are usually required to split the solar spectrum and efficiently send them to the corresponding PV cells. An ideal spectral filter should have a rectangular shape with sharp transition wavelengths. A methodology of designing and modeling a transmission DCG hologram using coupled wave analysis for different PV bandgap combinations is described. To achieve a broad diffraction bandwidth and sharp cutoff wavelength, a cascaded structure of multiple thick holograms is described. A search algorithm is then developed to optimize both single-and two-layer cascaded holographic spectrum-splitting elements for the best bandgap combinations of two-and threejunction spectrum-splitting photovoltaic (SSPV) systems illuminated under the AM1.5 solar spectrum. The power conversion efficiencies of the optimized systems are found to be 42.56% and 48.41%, respectively, using the detailed balance method, and show an improvement compared with a tandem multijunction system. A fabrication method for cascaded DCG holographic filters is also described and used to prototype the optimized filter for the three-junction SSPV system.

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Section: Evaluating Spectrum-splitting Systemmentioning

confidence: 99%

“…[5][6][7][8][9][10] In this approach, the optical system spatially separates incident solar illumination into different spectral bands and directs each band to a PV cell that has the highest response to the spectral band. Since each PV cell is separated, lattice matching is not an issue and different material types can be used.…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of cascaded dichromate gelatin holographic filters for spectrum-splitting PV systems

Chrysler

Kostuk

2018

J. Photon. Energy

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“…The current state-of-the-art in immersed 45-deg dichroic coatings is such that the average reflection of the dichroic coating from 400 to 800 nm was 98.2% (p-polarized 99.8%, s-polarized 96.0%) and the average transmission from 900 to 1800 nm was 97.9% (p-polarized 97.1%, s-polarized 99.3%). 12 In this paper, we assume that the average reflection of the dichroic coating from 400 to 855 nm was 98% (p-polarized 98%, s-polarized 98%) and the average transmission from 855 to 1600 nm was 98% (p-polarized 98%, s-polarized 98%). The TLGL also had 45-deg reflective surfaces on the respective injected facets, which were assumed to be ideal reflectors.…”

Section: System Process Of Design and Simulationmentioning

confidence: 99%

High-integrated spectral splitting solar concentrator with double-light guide layers

Meng

et al. 2014

Opt. Eng

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Abstract. Individual secondary optical components in a spectral splitting solar concentrator utilizing a microlens array require multiple photovoltaic (PV) cells, which leads to the complexity of system alignment and a high cost. In order to improve the integration of the PV cells and thermal management, a spectral splitting concentrator coupled to double-light guide layers has been proposed. Using one-axis tracking, we further investigate the optical performance of the concentrator combined with a cylindrical microlens array with double vertically staggered light guide layers in detail. The results show that this solar concentrator maintains a good acceptance angle of AE2 deg in the east-west direction and an acceptable angle of AE14 deg in the perpendicular direction on both low and high spectrums, achieving a concentration ratio of 10×. Finally, the capability of lateral displacement tracking has been explored for an aperture angle of AE24 deg in this concentrator. IntroductionWith the promotion of solar energy utilization, solar concentrating technology which increases the energy collecting efficiency has been rapidly developed and photovoltaic (PV) cells are generally identified as the most important components in a concentrator photovoltaic (CPV) system to realize photoelectricity power conversion.1 To convert a large portion of the incident solar spectrum, a series of PV cells have been constructed by layering semiconductors with different absorption characteristics, manufactured by complex and high-cost multijunction technology.2 Therefore, spectral splitting technology with a low-cost multiple single-junction PV cells has more potential applications due to the low concentration ratio and high photoelectricity conversion efficiency. The single module using spectral splitting technology obtains a high photoelectricity conversion efficiency of 42.7 AE 2.5% combined with an optical efficiency of 93%.

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“…9) with an efficiency of 38.5% AE1.9% under the ASTM G173. 52 The VHESC module architecture is a good illustration of the beam division systems' wiring and assembly complexity. The placement of the GaInP/GaAs cell in an oblique downward position well inside the module makes the heat sink design challenging.…”

Section: Advanced Designsmentioning

confidence: 99%

Recent trends in concentrated photovoltaics concentrators’ architecture

et al. 2014

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Abstract. The field of concentrated photovoltaics (CPV) has met some remarkable advances in recent years. The continuous increase in conversion efficiency of multijunction solar cells and new advancements in optics have led to new demands and opportunities for optical design in CPV. This paper is a mini-review on current requirements for CPV optical design, and it presents some of the main trends in recent years on CPV systems architecture. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Compact spectrum splitting photovoltaic module with high efficiency

Cited by 91 publications

References 15 publications

Design and fabrication of cascaded dichromate gelatin holographic filters for spectrum-splitting PV systems

Design and fabrication of cascaded dichromate gelatin holographic filters for spectrum-splitting PV systems

High-integrated spectral splitting solar concentrator with double-light guide layers

Recent trends in concentrated photovoltaics concentrators’ architecture

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