Transparent conducting oxides as selective filters in thermophotovoltaic devices

Vigil, O.; Ruiz, Carmen M.; Seuret, D.; Bermúdez, V. de Zea; Diéguez, E.

doi:10.1088/0953-8984/17/41/008

Cited by 18 publications

(11 citation statements)

References 16 publications

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“…A cascaded inhomogeneous dielectric substrate with different refractive indexes was tailored as wavelength-selective structure (Kiziltas et al, 2005). The free carrier concentration and the thickness effects on the spectral transmittance and reflectance of the filter have also been studied (Vigil et al, 2005). A filter may be sometimes attached on top of the TPV cells to save space as shown in Figure 4(c).…”

Section: Filtersmentioning

confidence: 99%

“…Note that the matrix formulation (Yeh, 1988) can be used to calculate the reflectance and transmittance for a multilayer structure. Thin films play an important role in TPV devices as antireflection coatings on cells (Gopinath et al, 2004), coatings on emitters (Cockeram et al, 1999), and optical filters (Chubb and Wolford, 2005;Martin et al, 2002;Vigil et al, 2005). Figure 7(a) shows the normal reflectance of In 0.2 Ga 0.8 Sb TPV cells with and without antireflection coatings at wavelengths from 1 to 2.5 mm.…”

Section: Thin Films and Wave Interferencementioning

confidence: 99%

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Microscale radiation in thermophotovoltaic devices—A review

Basu

Chen

Zhang

2007

Int. J. Energy Res.

219

131

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SUMMARYFast depleting reserves of conventional energy sources has resulted in an urgent need for increasing energy conversion efficiencies and recycling of waste heat. One of the potential candidates for fulfilling these requirements is thermophotovoltaic (TPV) devices. TPV devices generate electricity from either the complete combustion of different fuels or the waste heat of other energy sources, thereby saving energy. The thermal radiation from the emitter is incident on a TPV cell, which generates electrical currents. Applications of such devices range from hybrid electric vehicles to power sources for microelectronic systems. Absence of any moving parts and versatile fuel usage has made TPV devices very appealing for military and space applications. However, the presently available TPV systems suffer from low conversion efficiency. A viable solution to increase their efficiency is to apply microscale radiation principles in the design of different components to utilize the characteristics of thermal radiation at small distances and in microstructures. In order to have a clear understanding of microscale radiation and its role in TPV devices, several critical issues are reviewed in the present work. Emphasis is given to the development of wavelength-selective emitters and filters and the aspects of microscale heat transfer as applied to TPV systems. Recent progress, along with challenges and opportunities for future development of TPV systems are also outlined.

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Section: Filtersmentioning

confidence: 99%

Section: Thin Films and Wave Interferencementioning

confidence: 99%

Microscale radiation in thermophotovoltaic devices—A review

Basu

Chen

Zhang

2007

Int. J. Energy Res.

219

131

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“…Such a requirement is hard to meet, but there are a number of structures that can provide a sufficiently wide reflection band in the IR region. Plasma filters based on transparent conducting oxides [88,89] or semiconductors [90] with plasma frequency adjusted to the band gap of the PV cell were suggested as edge filters for TPV applications. An example of the reflection of an InN-based plasma filter is shown in Figure 9A.…”

Section: Filters and Photon Recyclingmentioning

confidence: 99%

Solar thermophotovoltaics: reshaping the solar spectrum

et al. 2016

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Abstract:Recently, there has been increasing interest in utilizing solar thermophotovoltaics (STPV) to convert sunlight into electricity, given their potential to exceed the Shockley-Queisser limit. Encouragingly, there have also been several recent demonstrations of improved systemlevel efficiency as high as 6.2%. In this work, we review prior work in the field, with particular emphasis on the role of several key principles in their experimental operation, performance, and reliability. In particular, for the problem of designing selective solar absorbers, we consider the trade-off between solar absorption and thermal losses, particularly radiative and convective mechanisms. For the selective thermal emitters, we consider the tradeoff between emission at critical wavelengths and parasitic losses. Then for the thermophotovoltaic (TPV) diodes, we consider the trade-off between increasing the potential short-circuit current, and maintaining a reasonable opencircuit voltage. This treatment parallels the historic development of the field, but also connects early insights with recent developments in adjacent fields. With these various components connecting in multiple ways, a system-level end-to-end modeling approach is necessary for a comprehensive understanding and appropriate improvement of STPV systems. This approach will ultimately allow researchers to design STPV systems capable of exceeding recently demonstrated efficiency values.

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“…A cascaded inhomogeneous dielectric substrate with different refractive indexes was tailored as wavelength-selective structure [37]. The free carrier concentration and the thickness effects on the spectral transmittance and reflectance of the filter were also studied [38]. 1D filter composed of dielectric stack layers mounted on the top of a TPV cell is one of such examples [39].…”

Section: Filtersmentioning

confidence: 99%

Application of micro/nanoscale thermal radiation to thermophotovoltaic system

Wang

Cai

2011

J. Cent. South Univ. Technol.

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Thermophotovoltaic (TPV) system has been regarded as one promising means to alleviate current energy demand because it can directly generate electricity from radiation heat via photons. However, the presently available TPV systems suffer from low conversion efficiency and low throughput. A viable solution to increase their efficiency is to apply micro/nanoscale radiation principles in the design of different components to utilize the characteristics of thermal radiation at small distances and in microstructures. Several critical issues are reviewed, such as photovoltaic effect, quantum efficiency and efficiency of TPV system. Emphasis is given to the development of wavelength-selective emitters and filters and the aspects of micro/nanoscale heat transfer. Recent progress, along with the challenges and opportunities for future development of TPV systems are also outlined.

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Transparent conducting oxides as selective filters in thermophotovoltaic devices

Cited by 18 publications

References 16 publications

Microscale radiation in thermophotovoltaic devices—A review

Microscale radiation in thermophotovoltaic devices—A review

Solar thermophotovoltaics: reshaping the solar spectrum

Application of micro/nanoscale thermal radiation to thermophotovoltaic system

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