Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars

Manohar Chirumamilla, Anisha Chirumamilla, Yuanqing Yang, Alexander Sylvester Roberts, Peter Kjær Kristensen, Krishnakali Chaudhuri, Alexandra Boltasseva, Duncan Sutherland, Sergey I. Bozhevolnyi, Kjeld Pedersen

Publikation: Bidrag til tidsskriftLetterForskningpeer review

Resumé

Broadband absorbers, with the simultaneous advantages of thermal stability, insensitivity to light polarization and angle, robustness against harsh environmental conditions, and large area fabrication by scalable methods, are essential elements in (solar) thermophotovoltaics. Compared to the noble metal and multilayered broadband absorbers, high-temperature refractory metal-based nanostructures with low-Q resonators are reported less. In this work, 3D titanium nitride (TiN) nanopillars are investigated for ultrabroadband absorption in the visible and near-infrared spectral regions with average absorptivities of 0.94, over a wide range of oblique angles between 0° and 75°. The effect of geometrical parameters of the TiN nanopillars on broadband absorption is investigated. By combining the flexibility of nanopillar design and lossy TiN films, ultrabroadband absorption in the visible and near-infrared is obtained. A thin layer of hafnium oxide is deposited to enhance the thermal stability of TiN nanopillars. Finally, the thermal/spectral stability of the TiN nanopillars is demonstrated after annealing at 1473 K for 24 h while retaining their structural features. Thus, the TiN nanopillars can provide excellent opportunities for high-temperature applications, especially solar thermophotovoltaics.
OriginalsprogEngelsk
Artikelnummer1700552
TidsskriftAdvanced Optical Materials
Vol/bind5
Udgave nummer22
Antal sider8
ISSN2195-1071
DOI
StatusUdgivet - 2017

Fingeraftryk

Titanium nitride
titanium nitrides
absorbers
broadband
Thermodynamic stability
thermal stability
Hafnium oxides
Infrared radiation
hafnium oxides
refractory metals
Refractory metals
High temperature applications
Light polarization
Precious metals
retaining
noble metals
titanium nitride
Resonators
Nanostructures
absorptivity

Citer dette

Chirumamilla, M., Chirumamilla, A., Yang, Y., Roberts, A. S., Kristensen, P. K., Chaudhuri, K., ... Pedersen, K. (2017). Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars. Advanced Optical Materials, 5(22), [1700552]. https://doi.org/10.1002/adom.201700552
Chirumamilla, Manohar ; Chirumamilla, Anisha ; Yang, Yuanqing ; Roberts, Alexander Sylvester ; Kristensen, Peter Kjær ; Chaudhuri, Krishnakali ; Boltasseva, Alexandra ; Sutherland, Duncan ; Bozhevolnyi, Sergey I. ; Pedersen, Kjeld. / Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars. I: Advanced Optical Materials. 2017 ; Bind 5, Nr. 22.
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title = "Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars",
abstract = "Broadband absorbers, with the simultaneous advantages of thermal stability, insensitivity to light polarization and angle, robustness against harsh environmental conditions, and large area fabrication by scalable methods, are essential elements in (solar) thermophotovoltaics. Compared to the noble metal and multilayered broadband absorbers, high-temperature refractory metal-based nanostructures with low-Q resonators are reported less. In this work, 3D titanium nitride (TiN) nanopillars are investigated for ultrabroadband absorption in the visible and near-infrared spectral regions with average absorptivities of 0.94, over a wide range of oblique angles between 0° and 75°. The effect of geometrical parameters of the TiN nanopillars on broadband absorption is investigated. By combining the flexibility of nanopillar design and lossy TiN films, ultrabroadband absorption in the visible and near-infrared is obtained. A thin layer of hafnium oxide is deposited to enhance the thermal stability of TiN nanopillars. Finally, the thermal/spectral stability of the TiN nanopillars is demonstrated after annealing at 1473 K for 24 h while retaining their structural features. Thus, the TiN nanopillars can provide excellent opportunities for high-temperature applications, especially solar thermophotovoltaics.",
author = "Manohar Chirumamilla and Anisha Chirumamilla and Yuanqing Yang and Roberts, {Alexander Sylvester} and Kristensen, {Peter Kj{\ae}r} and Krishnakali Chaudhuri and Alexandra Boltasseva and Duncan Sutherland and Bozhevolnyi, {Sergey I.} and Kjeld Pedersen",
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Chirumamilla, M, Chirumamilla, A, Yang, Y, Roberts, AS, Kristensen, PK, Chaudhuri, K, Boltasseva, A, Sutherland, D, Bozhevolnyi, SI & Pedersen, K 2017, 'Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars', Advanced Optical Materials, bind 5, nr. 22, 1700552. https://doi.org/10.1002/adom.201700552

Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars. / Chirumamilla, Manohar; Chirumamilla, Anisha; Yang, Yuanqing; Roberts, Alexander Sylvester; Kristensen, Peter Kjær; Chaudhuri, Krishnakali; Boltasseva, Alexandra; Sutherland, Duncan; Bozhevolnyi, Sergey I.; Pedersen, Kjeld.

I: Advanced Optical Materials, Bind 5, Nr. 22, 1700552, 2017.

Publikation: Bidrag til tidsskriftLetterForskningpeer review

TY - JOUR

T1 - Large‐Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars

AU - Chirumamilla, Manohar

AU - Chirumamilla, Anisha

AU - Yang, Yuanqing

AU - Roberts, Alexander Sylvester

AU - Kristensen, Peter Kjær

AU - Chaudhuri, Krishnakali

AU - Boltasseva, Alexandra

AU - Sutherland, Duncan

AU - Bozhevolnyi, Sergey I.

AU - Pedersen, Kjeld

PY - 2017

Y1 - 2017

N2 - Broadband absorbers, with the simultaneous advantages of thermal stability, insensitivity to light polarization and angle, robustness against harsh environmental conditions, and large area fabrication by scalable methods, are essential elements in (solar) thermophotovoltaics. Compared to the noble metal and multilayered broadband absorbers, high-temperature refractory metal-based nanostructures with low-Q resonators are reported less. In this work, 3D titanium nitride (TiN) nanopillars are investigated for ultrabroadband absorption in the visible and near-infrared spectral regions with average absorptivities of 0.94, over a wide range of oblique angles between 0° and 75°. The effect of geometrical parameters of the TiN nanopillars on broadband absorption is investigated. By combining the flexibility of nanopillar design and lossy TiN films, ultrabroadband absorption in the visible and near-infrared is obtained. A thin layer of hafnium oxide is deposited to enhance the thermal stability of TiN nanopillars. Finally, the thermal/spectral stability of the TiN nanopillars is demonstrated after annealing at 1473 K for 24 h while retaining their structural features. Thus, the TiN nanopillars can provide excellent opportunities for high-temperature applications, especially solar thermophotovoltaics.

AB - Broadband absorbers, with the simultaneous advantages of thermal stability, insensitivity to light polarization and angle, robustness against harsh environmental conditions, and large area fabrication by scalable methods, are essential elements in (solar) thermophotovoltaics. Compared to the noble metal and multilayered broadband absorbers, high-temperature refractory metal-based nanostructures with low-Q resonators are reported less. In this work, 3D titanium nitride (TiN) nanopillars are investigated for ultrabroadband absorption in the visible and near-infrared spectral regions with average absorptivities of 0.94, over a wide range of oblique angles between 0° and 75°. The effect of geometrical parameters of the TiN nanopillars on broadband absorption is investigated. By combining the flexibility of nanopillar design and lossy TiN films, ultrabroadband absorption in the visible and near-infrared is obtained. A thin layer of hafnium oxide is deposited to enhance the thermal stability of TiN nanopillars. Finally, the thermal/spectral stability of the TiN nanopillars is demonstrated after annealing at 1473 K for 24 h while retaining their structural features. Thus, the TiN nanopillars can provide excellent opportunities for high-temperature applications, especially solar thermophotovoltaics.

U2 - 10.1002/adom.201700552

DO - 10.1002/adom.201700552

M3 - Letter

VL - 5

JO - Advanced Optical Materials

JF - Advanced Optical Materials

SN - 2195-1071

IS - 22

M1 - 1700552

ER -