Evaluation of a ZrO2/ZrO2-aerogel one-dimensional photonic crystal as an optical filter for thermophotovoltaic applications

Pirvaram, Atousa; Talebzadeh, Nima; Rostami, Mohsen; Leung, Siu N.; O’Brien, Paul G.

doi:10.1016/j.tsep.2021.100968

Cited by 14 publications

(8 citation statements)

References 52 publications

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“…To date, most research on TPV/STPV systems has focused on PV cells [18]- [25], absorbers/emitters [26]- [34], and optical filters to reflect out-of-band photons back to the emitter [31]- [36]. However, the design of optical cavities for STPV systems has rarely been studied, despite the fact that optical cavities can be used to increase the system efficiency, photon recycling (also known as photon recuperation or regenerative TPV [35]), and emitter-to-cell effective view factor [37], [38].…”

Section: Ellipsoidal Optical Cavities For Enhanced Thermophotovoltaicsmentioning

confidence: 99%

Ellipsoidal Optical Cavities for Enhanced Thermophotovoltaics

Talebzadeh

Pirvaram

O’Brien

2022

IEEE J. Photovoltaics

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Herein we present an optical cavity in the form of a prolate ellipsoid that can greatly enhance the performance of solar thermophotovoltaic (STPV) systems. The geometrical parameters of the cavity can be designed to control the degree of photon recycling, the temperature of the emitter within the STPV system, gap distance and effective view factor between the PV cell and the emitter, and to minimize the emission losses. Numerical analysis shows the ellipsoidal optical cavity can be designed to achieve an effective view factor of 88.7% between the emitter and PV cell within a STPV system. Results show an efficiency of 5.62% in a STPV system with a GaSb PV cell and a black-body emitter under solar radiation at a concentration factor of 350X. Further, assuming the surface of the ellipsoidal optical cavity is capable of reflecting 99% of the radiation incident onto its surface, efficiencies of 15.54% can be attained when the solar concentration factor is 1400X. These results are attained for STPV systems without using selective absorbers, emitters or filters. The ellipsoidal optical cavity can be integrated into the design of advanced TPV systems and bring them closer to the high theoretical efficiencies TPV systems are capable of.

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Section: Ellipsoidal Optical Cavities For Enhanced Thermophotovoltaicsmentioning

confidence: 99%

Ellipsoidal Optical Cavities for Enhanced Thermophotovoltaics

Talebzadeh

Pirvaram

O’Brien

2022

IEEE J. Photovoltaics

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“…Another strategy is to reflect out-of-band photons such that they are returned to the emitter. This reflective spectral control scheme is achieved by either using an optical filter between the PV cell and the emitter 18,19 or by reflecting photons transmitted through the PV cell by coating a reflector onto its rear surface. 20,21 Design strategies for decreasing directional losses and achieving a high emitter-to-PV cell view factor include using angular selective emitters, [22][23][24] and employing a cage-type configuration wherein the emitter is completely surrounded by an array of PV cells.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spheroid-based optical cavities for tunable photon recycling and emitter temperature control in robust solar thermophotovoltaic systems

Talebzadeh

O’Brien

2023

J. Photon. Energy

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.The theoretical efficiency of solar thermophotovoltaic (STPV) systems is much greater than their efficiencies achieved in practice. Optical cavities can improve the performance of STPV systems by increasing the emitter-to-PV cell view factor and by facilitating photon recycling, whereby photons are reflected back to the emitter. Photon recycling reduces losses and increases the temperature of the emitter, thereby increasing efficiency. Our study presents STPV systems comprising optical cavities in the form of oblate and prolate spheroids. The geometry of the optical cavity can be tuned to control the degree of photon recycling, emitter temperature, emission losses, and the emitter-to-PV cell effective view factor and separation distance without using complex nano- or microstructured materials or optical filters. Numerical analysis shows an optical cavity in the form of a prolate spheroid, prolate spheroid with a middle annular aperture specular reflector, and integrated oblate- and prolate-spheroid can be used to achieve efficiencies of 17.7%, 18.9%, and 22%, respectively, under solar irradiation at a concentration factor of 1500X. These robust spheroid-based optical cavities can be used to design improved STPV systems with increased durability and higher performance.

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“…Due to its numerous properties, zirconium oxide is used in many applications such as protective coatings against corrosion, wear and oxidation [10,11], in optical applications (mirror, filters, etc.) [12][13][14][15], in anti-counterfeiting solutions [9] and in health applications such as the dental field [16,17].…”

Section: Introductionmentioning

confidence: 99%

Versatile Zirconium Oxide (ZrO2) Sol-Gel Development for the Micro-Structuring of Various Substrates (Nature and Shape) by Optical and Nano-Imprint Lithography

et al. 2022

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Zirconium oxide (ZrO2) is a well-studied and promising material due to its remarkable chemical and physical properties. It is used, for example, in coatings for corrosion protection layer, wear and oxidation, in optical applications (mirror, filters), for decorative components, for anti-counterfeiting solutions and for medical applications. ZrO2 can be obtained as a thin film using different deposition methods such as physical vapor deposition (PVD) or chemical vapor deposition (CVD). These techniques are mastered but they do not allow easy micro-nanostructuring of these coatings due to the intrinsic properties (high melting point, mechanical and chemical resistance). An alternative approach described in this paper is the sol-gel method, which allows direct micro-nanostructuring of the ZrO2 layers without physical or chemical etching processes, using optical or nano-imprint lithography. In this paper, the authors present a complete and suitable ZrO2 sol-gel method allowing to achieve complex micro-nanostructures by optical or nano-imprint lithography on substrates of different nature and shape (especially non-planar and foil-based substrates). The synthesis of the ZrO2 sol-gel is presented as well as the micro-nanostructuring process by masking, colloidal lithography and nano-imprint lithography on glass and plastic substrates as well as on plane and curved substrates.

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Evaluation of a ZrO2/ZrO2-aerogel one-dimensional photonic crystal as an optical filter for thermophotovoltaic applications

Cited by 14 publications

References 52 publications

Ellipsoidal Optical Cavities for Enhanced Thermophotovoltaics

Ellipsoidal Optical Cavities for Enhanced Thermophotovoltaics

Spheroid-based optical cavities for tunable photon recycling and emitter temperature control in robust solar thermophotovoltaic systems

Versatile Zirconium Oxide (ZrO2) Sol-Gel Development for the Micro-Structuring of Various Substrates (Nature and Shape) by Optical and Nano-Imprint Lithography

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