Thermophotovoltaics

Heide, J. van der

doi:10.1016/b978-0-08-087872-0.00133-5

Cited by 5 publications

(10 citation statements)

References 13 publications

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“…[ 7,10,15 ] These are used in TPVs as high-temperature emitters of IR radiation tailored to the bandgap of the corresponding semiconductor cell. [ 7,10,15 ] These are used in TPVs as high-temperature emitters of IR radiation tailored to the bandgap of the corresponding semiconductor cell.…”

Section: Material-based Approachesmentioning

confidence: 99%

“…[ 6,7,15 ] One review which pays special attention to material-and temperature-related properties of the above-mentioned compounds is given in ref. A detailed review of such structures can be found in the literature.…”

Section: Choice Of Materialsmentioning

confidence: 99%

“…Material-based emitters for the visible spectrum exploit the natural emission spectra of various metals and dielectrics, such as ceramics and oxides, usually fabricated as thin fi lms. [ 7,10,15 ] These are used in TPVs as high-temperature emitters of IR radiation tailored to the bandgap of the corresponding semiconductor cell. More sophisticated ways to improve the emission properties include chemical functionalization and texturizing of the materials, as well as carefully designing multilayer and multimaterial interference-based and thin-fi lm photonic crystal arrangements, [ 21,22 ] as well as density and porosity modulation.…”

Section: Material-based Approachesmentioning

confidence: 99%

“…The middle region is composed of a periodic array of material from the bottom region and air from the upper region, resulting in a periodic dielectric function within the layer. As specifi ed by the Bloch-Floquet condition [ 6 ] 2 sin 2 k j xj π λ θ π = + Λ (7) and the grating equation…”

Section: Photonic Crystal Emitters/absorbersmentioning

confidence: 99%

“…In the fi eld of thermophotovoltaics (TPV) (Figure 1 b), a thermal emitter heated to a high temperature serves as a source of radiation. [ 6,7 ] Emitters are typically heated to temperatures in the range of thousands of degrees Celsius, so that they emit most of the radiation in the infrared, where the corresponding energy bands of semiconductors, used in photovoltaic cells, are located. Solar TPVs (Figure 1 c) use solar energy to heat the emitter and take advantage of concentrators that focus the radiation collected over a larger area onto a much smaller photovoltaic system, thus reducing the material costs.…”

mentioning

confidence: 99%

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Micro‐ and Nanostructured Surfaces for Selective Solar Absorption

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Applications utilizing solar energy are being actively developed due to increasing demand for environmentally friendly and sustainable energy solutions. The sun is a source of tremendous energy spanning from ultraviolet to infrared wavelengths, with the maximum energy in the visible range, corresponding to a blackbody temperature of 5780 K. [ 1 ] It is estimated that the amount of solar energy reaching Earth's surface is enough to Effi cient absorption of solar radiation is desired for the renewable energy sector, such as solar thermophotovoltaics and solar thermal applications. In order to minimize thermal re-radiation, wavelength-selective devices are required. Absorbers with structured surfaces are attractive because they derive their electromagnetic properties to a greater extent from their geometry and to a lesser extent from the intrinsic properties of the constituent materials. Thus, they offer greater fl exibility in the design and control of absorber features and can be tailored to suit requirements. This article reviews various classes of patterned structures: photonic crystals, metal-dielectric-metal slab arrays, metamaterials, and nanostructures operating in the visible and infrared wavelength ranges. Operation requirements, design principles and underlying physical phenomena, material and temperature considerations, as well as fabrication methods are discussed. Recent progress in achieving various desirable absorber features, such as broadband and multiband operation, polarization and angle independence, fl exibility, and tunability is presented. Suggestions are also given regarding future research directions.

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