Spectral splitting for an InGaP/GaAs parallel junction solar cell

Erim, Muhammed Necip; Erim, Nur; Kurt, Hamza

doi:10.1364/ao.58.004265

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…Different refractive and diffractive-spectral-beam-splitters techniques use (Table 1) holograms in common axis [64], non-uniform diffractive grafting or micro prism arrays as spectral beam splitters in multiple optical axis, and integrated diffractive/refractive arrays (Figure 3) in zig-zag axis [65]. Carrier multiplication may occur when ionization of an atom by impact creates another exciton.…”

Section: Spectrum Oriented Optimizationmentioning

confidence: 99%

Investigation of the Photon to Charge Conversion and Its Implication on Photovoltaic Cell Efficient Operation

2021

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Efficient photon to charge (PTC) transfer is considered to be the cornerstone of technological improvements in the photovoltaic (PV) industry, while it constitutes the most common process in nature. This study aims to investigate the parameters that impact efficient PV-cell photon to charge conversion in two ways: (a) providing a brief research analysis to extract the key features which affect the electrical and optical performance of PV cells’ operation, and (b) investigating the dependance of these characteristics on the photon to charge mechanisms. The former direction focuses on the latest advances regarding the impacts of the microenvironment climate conditions on the PV module and its operational performance, while the latter examines the fundamental determinants of the cell’s efficient operation. The electrical and optical parameters of the bulk PV cells are influenced by both the external microenvironment and the intrinsic photon to charge conversion principles. Light and energy harvesting issues need to be overcome, while nature-inspired interpretation and mimicking of photon to charge and excitation energy transfer are in an infant stage, furthering a better understanding of artificial photosynthesis. A future research orientation is proposed which focuses on scaling up development and making use of the before mentioned challenges.

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Section: Spectrum Oriented Optimizationmentioning

confidence: 99%

Investigation of the Photon to Charge Conversion and Its Implication on Photovoltaic Cell Efficient Operation

2021

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“…35,36 An alternative to cell stacking is spectral splitting (SS) that relies on the use of some kind of spectral selection to provide separate optical paths for light in different bands and on the deployment of independent PV cells optimized in PCE over each specific spectral band. [37][38][39][40][41][42] Spectral selection is generally provided by holographic diffraction gratings or dichroic splitters and mirrors. 33,37,39,43 In principle, SS introduces a great freedom of choice for the technology of the WG cell and matching in area is no more required.…”

Section: Introductionmentioning

confidence: 99%

“…The residual amount of optical loss of the WG cell in the NIR spectrum is also a challenge 35,36 . An alternative to cell stacking is spectral splitting (SS) that relies on the use of some kind of spectral selection to provide separate optical paths for light in different bands and on the deployment of independent PV cells optimized in PCE over each specific spectral band 37–42 …”

Section: Introductionmentioning

confidence: 99%

An asymmetric low concentrator and spectral splitting approach to bifacial four‐terminal photovoltaic modules

Farina

Carlotto

Varas³

et al. 2022

Progress in Photovoltaics

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We introduce the conceptual design of the optical core for a spectral‐splitting and light‐guiding four‐terminal (4T) photovoltaic (PV) module, with appealing features for bifacial operation. We analyze the applicability of the solution and its performance using a commercial ray‐tracing software for direct and diffused solar irradiance at standard AM1.5G spectrum. The core is a right‐angle transparent wedged (RAW) prism. Complementary, two dichroic mirrors are optically coupled to the rear and bottom faces of the wedge to perform the spectral‐splitting (SS) function. Low‐gain concentration in the visible (VIS) band is provided by combining dichroic reflections with achromatic total internal reflection (TIR) at the topmost air‐dielectric interface for light guiding. The module can support 4T heterojunction connection, implemented with wide‐bandgap (WG) solar cells for the VIS and silicon‐based solar cells for the near infrared (NIR). At a geometrical concentration gain CG‐VIS ≈ 4 and wide optical acceptance angle θA ≈ 48°, also VIS diffused light is effectively collected and a spectrally integrated optical efficiency ηo,diff = 62%, (ηo(diff,NIR) =45%, ηo(diff,VIS) = 17%) is estimated. Under direct illumination ηo,dir > 80% is obtained over the whole angular acceptance with a maximum optical efficiency ηo,dir‐MAX ≈ 88.7% at θi = 37°. Low‐concentrating RAW‐SS can work stationary and trackless. The tilt angle for the orientation is set according to the latitude at the installation site, and in the northern hemisphere, it is more north‐oriented with respect to standard panels. The collection of albedo irradiance from the ground is favored, since the scaling coefficient for self‐shading of the module at sun elevation is lower than for standard flat panels of equivalent input area and normally oriented. The decrease in self‐shading is therefore an asset for bifacial operation and specifically effective at lower latitudes where solar irradiance is stronger. The possible applications range from sub‐watt indoor PV and Internet‐of‐Things power suppliers to utility‐scale plants and building‐integrated solutions.

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“…Thus, the shadow effect becomes unavoidable. The second kind of alignment arranges multiple receivers with different optical axes [16][17][18][19]. In this arrangement, the sunlight receivers can be photovoltaic cells with different absorption bands and lateral arrangements [12,13].…”

Section: Introductionmentioning

confidence: 99%

A Side-Absorption Concentrated Module with a Diffractive Optical Element as a Spectral-Beam-Splitter for a Hybrid-Collecting Solar System

2020

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In this paper, we propose a side-absorption concentrated module with diffractive grating as a spectral-beam-splitter to divide sunlight into visible and infrared parts. The separate solar energy can be applied to different energy conversion devices or diverse applications, such as hybrid PV/T solar systems and other hybrid-collecting solar systems. Via the optimization of the geometric parameters of the diffractive grating, such as the grating period and height, the visible and the infrared bands can dominate the first and the zeroth diffraction orders, respectively. The designed grating integrated with the lens and the light-guide forms the proposed module, which is able to export visible and infrared light individually. This module is demonstrated in the form of an array consisting of seven units, successfully out-coupling the spectral-split beams by separate planar ports. Considering the whole solar spectrum, the simulated and measured module efficiencies of this module were 45.2% and 34.8%, respectively. Analyses of the efficiency loss indicated that the improvement of the module efficiency lies in the high fill-factor lens array, the high-reflectance coating, and less scattering.

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Spectral splitting for an InGaP/GaAs parallel junction solar cell

Cited by 6 publications

References 21 publications

Investigation of the Photon to Charge Conversion and Its Implication on Photovoltaic Cell Efficient Operation

Investigation of the Photon to Charge Conversion and Its Implication on Photovoltaic Cell Efficient Operation

An asymmetric low concentrator and spectral splitting approach to bifacial four‐terminal photovoltaic modules

A Side-Absorption Concentrated Module with a Diffractive Optical Element as a Spectral-Beam-Splitter for a Hybrid-Collecting Solar System

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