Thermophotovoltaics (TPVs) convert predominantly infrared wavelength light to electricity via the photovoltaic effect, and can enable approaches to energy storage1,2 and conversion3–9 that use ...
This drop in efficiency with increasing junction number (beyond 2) is contrary to photovoltaic efficiencies and occurs because additional photovoltage beyond that required to kinetically split ...
Request PDF | Four‐junction spectral beam‐splitting photovoltaic receiver with high optical efficiency | A spectral beam-splitting architecture is shown to provide an excellent basis for a ...
DOI: 10.1016/J.IJHYDENE.2007.04.036 Corpus ID: 95631857; Solar hydrogen production by water splitting with a conversion efficiency of 18 @article{Peharz2007SolarHP, title={Solar hydrogen production by water splitting with a conversion efficiency of 18}, author={Gerhard Peharz and Frank Dimroth and Ursula Wittstadt}, journal={International Journal of Hydrogen …
The solar cell in a spectrum-splitting system is designed to absorb only a portion of the light spectrum, while the rest is sent to a secondary solar cell. Concentration increases …
Photovoltaic (PV) cells use only a portion of the solar spectrum to generate electricity, limiting the efficiency of single-junction cells to 20–30%. PVT collectors improve on this overall...
Light trapping arrangement used in form of a 45° parallelepiped including two beam splitters and three solar cells. The sunlight reflected at filters or solar cells is directed to the next solar ...
When setting 5 W/m 2 K of heat transfer coefficient, the GaAs solar cell obtains the highest efficiency in the spectrum band of 350–900 nm, increasing efficiency from 19.39 …
Spectral-splitting hybrid photovoltaic-thermal (SSPVT) technology has emerged as a promising route toward high-performance solar harvesting. In this research, scientists have developed a comprehensive framework for modeling SSPVT solar collectors. The framework can be used to determine the efficiency limits of such collectors and to indicate how these limits can be …
A monolithically integrated, intrinsically safe, 10% efficient, solar-driven water-splitting system based on active, stable earth-abundant electrocatalysts in conjunction with …
Abstract: We investigate a spectrum splitting approach where light is trapped in a textured dielectric slab and coupled into underlying solar cells of different bandgaps through filters. We describe a specific design featuring an SiO 2 textured slab coated with angle restricting incoupling elements and four underlying dual junction subcells, based on light trapping and efficiency …
Photoelectrochemical (PEC) and photovoltaic-electrochemical (PV-EC) water splitting based on semiconductor materials is crucial in solar-energy conversion to produce renewable hydrogen fuel. Inspired by natural photosynthesis, PEC and PV-EC systems have attracted extensive research attention for over half a century. This chapter summarizes the ...
DOI: 10.1063/1.4971309 Corpus ID: 125089265; Spectral splitting optimization for high-efficiency solar photovoltaic and thermal power generation @article{Bierman2016SpectralSO, title={Spectral splitting optimization for high-efficiency solar photovoltaic and thermal power generation}, author={David M. Bierman and Andrej Lenert and Evelyn N. Wang}, …
To this end, a recent study published in the Journal of Photonics for Energy (JPE) explores the efficiency gain provided by tandem solar cells in which multiple semiconductors with different energy gaps are stacked atop one …
Abstract. An updated model of the solar spectrum splitting photovoltaic cell-thermoelectric generator system is used to derive the analytical expression of the systemic …
The Ta 3 N 5 photoanode in tandem with dual-CuInSe 2 photovoltaic cells enabled unbiased solar water splitting with a record STH energy conversion efficiency of 12.1% (among well-studied photocatalytic-material-based tandem devices); the efficiency remained above 10% for up to 6.7 h of device operation. Transient absorption spectroscopy and theoretical analysis …
Spectrum splitting is an essential way to enhance the efficiency of solar cells. A single junction cell can efficiently convert light to electricity only for a small part of the spectrum above the band gap. For an efficient conversion of the whole solar spectrum, one must find a way to split it into several frequency intervals and convert them ...
DOI: 10.1016/J.SOLMAT.2015.01.005 Corpus ID: 121455135; High-efficiency spectrum splitting for solar photovoltaics @article{Dorodnyy2015HighefficiencySS, title={High-efficiency spectrum splitting for solar photovoltaics}, author={Alexander Dorodnyy and Valery Shklover and L. S. Braginsky and Christian Hafner and Juerg Leuthold}, journal={Solar Energy Materials and …
The ray tracing simulations indicate that a significant increase in cell efficiency could be attained thanks to spectral beam splitting, the silicon solar cells, having the visible region spectral response could be operated without any excessive heating problem, and their energy efficiencies could be increased, showing the significant potential of energy savings. The …
Spectral splitting improves solar cells'' efficiency with a drop in cell temperature throughout all seasons. As well an increase in output power was seen along for the [yellow-green] spectral band ...
In summary, the energy losses and the material selection of the spectrum-splitting photovoltaic system utilizing two dual-junction solar cells have been investigated for the purpose of high-efficiency photovoltaic conversion. A real beam splitters will introduce losses, so a compromise should be made between the thermalization loss and light-splitting …
Photovoltaic-electrolysis water splitting (PV-EWS) is the most promising approach for high solar-to-hydrogen (STH) efficiency. The present PV-EWS systems achieve the highest STH performance by using a III-V triple-junction configuration, which, however, involves a complex and expensive manufacture process. Therefore, in this work, we demonstrate a III–V …
A photovoltaic-electrolysis system with the highest STH efficiency for any water splitting technology to date, to the best of the knowledge, is reported. Hydrogen production via electrochemical water splitting is a promising approach for storing solar energy. For this technology to be economically competitive, it is critical to develop water splitting systems with …
The light absorption of a monolayer graphene-molybdenum disulfide photovoltaic (GM-PV) cell in a wedge-shaped microcavity with a spectrum-splitting structure is investigated theoretically. The GM ...
Currently, photovoltaic-electrocatalytic (PV-EC) water splitting possesses the paramount solar-to-hydrogen energy conversion efficiency (STH) among various solar energy conversion and storage systems.
Solar spectral splitting is a strategy to optimize the extraction of exergy from sunlight through the separation of incident photons by energy levels (or wavelengths). This …
Currently, photovoltaic-electrocatalytic (PV-EC) water splitting possesses the paramount solar-to-hydrogen energy conversion efficiency (STH) among various solar energy conversion and storage systems. However, three principal factors including noble metal-based electrodes, expensive photovoltaic cell, and concentrated solar light systems largely limited …
A spectral beam‐splitting architecture is shown to provide an excellent basis for a four junction photovoltaic receiver with a virtually ideal band gap combination. Spectrally selective beam‐splitters are used to create a very efficient light trap in form of a 45° parallelepiped. The light trap distributes incident radiation onto the different solar cells with an …
Using the technique of thermoelectric generators, to convert the infrared part of the sun spectrum into electrical energy, we could increase the overall performance of a …
Natural light driven photovoltaic-electrolysis water splitting with 12.7% solar-to-hydrogen conversion efficiency using a two-electrode system grown with metal foam Author links open overlay panel Fangyuan Si a 1, Meng Wei a 1, Mingli Li a, Xiaoer Xie a, Qiongzhi Gao a, Xin Cai a, Shengsen Zhang a, Feng Peng b, Yueping Fang a, Siyuan Yang a
Spectral splitting is a new alternative to light-splitting technique in solar energy field. Incorporation of spectral splitting techniques between multiple PV cells eliminates the need for lattice ...
In this regard, organic semiconductors-based tandem systems may represent an alternative in the field of PEC water splitting, especially in view of the recent breakthrough in high-efficiency organic photovoltaic (OPV) and …
Semiconductor nanowires are promising for photovoltaic applications1,2,3,4,5,6,7,8,9,10,11, but, so far, nanowire-based solar cells have had lower efficiencies than planar cells made from the same ...
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