The impact of different chromatic aberration profiles on the short-circuit current of triple-junction solar cells is analyzed in detail using the developed distributed model. Current spreading conditions the impact of a given chromatic aberration profile on the solar cell I-V curve. The focus is put on determining the role of current spreading ...
In order to correct chromatic aberration, multi-material, multi-element refractive elements, hybrid refractive/diffractive elements, or multi-element refractive and diffractive systems can be designed. In this paper, the effect of introducing a diffractive surface in the optical path is analyzed.
With high levels of geometrical concentration, aberrations of the concentrator optics may limit the optical efficiency and acceptance angle. As the sun has a broad spectrum, chromatic aberration is a major reason for reduced efficiency. In this paper, the optical design of a two-stage optical concentrator system was presented.
Chromatic aberration results from the dispersive nature of optical materials; that is, the material’s refractive index (n) changes with wavelength. The refractive index of PMMA varies from 1.511 at 380 nm to 1.480 at 1.6 μm. This means short wavelengths are refracted more than long wavelengths.
Spherical aberration of the POE can be minimized by designing a Fresnel lens with an optimized aspherical surface profile. Refractive concentrators are typically rotationally symmetric, and due to the narrow acceptance angles, other monochromatic optical aberrations, such as the coma or distortion, are not pronounced [9, 10].
In this study, a diffractive optical element (DOE) was placed on the solar cell to achieve chromatic correction, and therefore increase optical efficiency and the acceptance angle, and reduce assembly tolerance requirements.
The sun subtends to an angle of about ±0.25° in the sky, meaning that a solar concentrator system should have an acceptance angle that matches and exceeds this value. Most CPV systems have very limited acceptance angles, and therefore require tracking and orientation systems to keep the sun in the field of view [5, 6, 7].
The impact of different chromatic aberration profiles on the short-circuit current of triple-junction solar cells is analyzed in detail using the developed distributed model. Current spreading conditions the impact of a given chromatic aberration profile on the solar cell I-V curve. The focus is put on determining the role of current spreading ...
The idea, as stated in the title; is to exploit the fact that chromatic aberration creates different focal points for different frequencies of light. This exploit is achieved by stacking rings of PV cells with different band gaps to form a small rod where each cell is exposed to light that matches its band-gap. This would replace multi-junction solar cells which are expensive because they''re ...
This paper presents an analytical definition and calculation method for chromatic aberration losses in Ga/sub 0.5/In/sub 0.5/P/GaAs solar cells. The effects of sheet resistance of the midlayers of the cell, total irradiance, incident spectrum, cell …
Current spreading conditions the impact of a given chromatic aberration profile on the solar cell I—V curve. The focus is put on determining the role of current spreading in the connection between photocurrent profile, subcell voltage and current, and semiconductor layers sheet resistance. Index Terms—Concentrator photovoltaics (CPV), chromatic aberration, distributed …
it is interesting to analyze how chromatic aberration affects the electrical performance of the solar cell. In this paper, we use an example light spot exhibiting chromatic aberration such that the photocurrent distribution in the top cell (TC) and bottom cell (BC) of the triple-junction solar cell …
Article: Analysis of the behavior of multijunction solar cells under high irradiance Gaussian light profiles showing chromatic aberration with emph. Progress in Photovoltaics Research and Applications 23(6): 743-753
The impact of different chromatic aberration profiles, as can be found in practical concentrator optics, on the short circuit current of the triple-junction solar cell is analyzed in detail using the distributed model developed. Current spreading determines the impact of a given chromatic aberration profile on the solar cell short circuit ...
Method for processing rainbow pieces caused by long film abnormity of solar cell CN103400890A (en) * 2013-07-08: 2013-11-20: : Reworking technology for striping re-plating of crystal silicon solar cell PECVD (plasma enhanced chemical vapor deposition) chromatic aberration slice
Concentration photovoltaic (CPV) systems might produce quite uneven irradiance distributions (both on their level and on their spectral distribution) on the solar cell. This effect can be even more evident when the CPV system is slightly off-axis, since they are often designed to assure good uniformity only at normal incidence. The non-uniformities both in …
Current spreading conditions the impact of a given chromatic aberration profile on the solar cell I-V curve. The focus is put on determining the role of current spreading in the connection between photocurrent profile, subcell voltage and current, and semiconductor layers sheet resistance.
A solar CPV concentrator system should be designed such that the wavelengths of light in this range are focused onto the solar cell. This can be achieved through designing a chromatic aberration-corrected (achromatized) …
This works is focused on the integration of ray-tracing methods for simulating the irradiance and spectrum maps produced by different optic systems throughout the solar cell surface, with a 3D fully distributed circuit model which simulates the electrical behavior of a state-of-the-art triple-junction solar cell under the different light distributions obtained with ray …
In this paper, etching was performed using one-step etching processes such as alkaline solution etching, reactive ion etching (RIE), and metal-assisted chemical etching (MACE), and...
We developed the multi-unit model and analyzed the affects of the chromatic aberration and intensity distribution for the multi-junction cells. In the multi-unit model, the same numbers of units as grid numbers are installed for every electrode, and the units were connected to each other via lateral resistances. In order to obtain the generation current from each diode, we measured the ...
it is interesting to analyze how chromatic aberration affects the electrical performance of the solar cell. In this paper, we use an example light spot exhibiting chromatic aberration such that the photocurrent distribution in the top cell (TC) and bottom cell (BC) of the triple-junction solar cell corresponds to a 1000-sun
In this paper, we present the application of these models for the analysis of triple-junction solar cells under real operating conditions. The impact of different chromatic aberration profiles on …
This paper presents an analytical definition and calculation method for chromatic aberration losses in Ga/sub 0.5/In/sub 0.5/P/GaAs solar cells. The effects of sheet resistance of the …
DOI: 10.1063/5.0032805 Corpus ID: 234629002; Switching of current modes in a concentrator multi-junction solar cell due to the Fresnel lens chromatic aberration @inproceedings{Shvarts2020SwitchingOC, title={Switching of current modes in a concentrator multi-junction solar cell due to the Fresnel lens chromatic aberration}, author={Maxim Z. …
The impact of different chromatic aberration profiles, as can be found in practical concentrator optics, on the short circuit current of the triple-junction solar cell is analyzed in detail using the …
In order to investigate the influence of the chromatic aberration on the performance of multi-junction solar cells, the performance of the triple-junction …
Current spreading conditions the impact of a given chromatic aberration profile on the solar cell I-V curve. The focus is put on determining the role of current spreading in the …
In this paper, we present the application of these models for the analysis of triple-junction solar cells under real operating conditions. The impact of different chromatic aberration profiles on the short-circuit current of triple-junction solar cells is analyzed in detail using the developed distributed model. Current spreading conditions the ...
The main sources of losses in solar cells are optical losses, absorption losses, thermalization losses, recombination losses and electrical losses. As a result of the multijunction architecture, thermalization and below bandgap absorption losses are minimized. The chapter discusses the different ways to implement multijunction solar cells, and presents the …
Si etch processes are vital steps in Si solar cell manufacturing. They are used for saw damage removal, surface texturing and parasitic junction removal. The next generation of Si solar...
A solar CPV concentrator system should be designed such that the wavelengths of light in this range are focused onto the solar cell. This can be achieved through designing a chromatic aberration-corrected (achromatized) optical concentrator system. Spherical aberration of the POE can be minimized by designing a Fresnel lens with an ...
In order to investigate the influence of the chromatic aberration on the performance of multi-junction solar cells, the performance of the triple-junction GaInP/GaInAs/Ge solar cell...
The characteristics of a multi-junction solar cell under concentrated light were evaluated by Simulation Program with Integrated Circuit Emphasis (SPICE). We developed the multi-unit model and analyzed the affects of the chromatic aberration and intensity distribution for the multi-junction cells. In the multi-unit model, the same numbers of ...
The characteristics of a multi-junction solar cell under concentrated light were evaluated by Simulation Program with Integrated Circuit Emphasis (SPICE). We developed the multi-unit …
In this paper, etching was performed using one-step etching processes such as alkaline solution etching, reactive ion etching (RIE), and metal-assisted chemical etching …
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