scholarly journals Mie-Metamaterials-Based Thermal Emitter for Near-Field Thermophotovoltaic Systems

Materials ◽  
2017 ◽  
Vol 10 (8) ◽  
pp. 885 ◽  
Author(s):  
Alok Ghanekar ◽  
Yanpei Tian ◽  
Sinong Zhang ◽  
Yali Cui ◽  
Yi Zheng
Keyword(s):  
Near Field ◽  
Thermal Emitter ◽  
Thermophotovoltaic Systems

scholarly journals Overcoming the black body limit in plasmonic and graphene near-field thermophotovoltaic systems

2012 ◽  
Vol 20 (S3) ◽  
pp. A366 ◽  
Author(s):  
Ognjen Ilic ◽  
Marinko Jablan ◽  
John D. Joannopoulos ◽  
Ivan Celanovic ◽  
Marin Soljačić
Keyword(s):  
Near Field ◽  
Black Body ◽  
Thermophotovoltaic Systems

Evaluation of performance of near-field thermophotovoltaic systems based on entropy analysis

2020 ◽  
Vol 127 (6) ◽  
pp. 063103
Author(s):  
Bowen Li ◽  
Qiang Cheng ◽  
Jinlin Song ◽  
Kun Zhou ◽  
Lu Lu ◽  
...  
Keyword(s):  
Near Field ◽  
Entropy Analysis ◽  
Evaluation Of Performance ◽  
Thermophotovoltaic Systems

scholarly journals A Computational Simulation of Using Tungsten Gratings in Near-Field Thermophotovoltaic Devices

2016 ◽  
Author(s):  
J. I. Watjen ◽  
X. L. Liu ◽  
B. Zhao ◽  
Z. M. Zhang
Keyword(s):  
Near Field ◽  
Computational Simulation ◽  
Radiation Exchange ◽  
Rigorous Coupled Wave Analysis ◽  
Pv Cell ◽  
Harvesting Systems ◽  
Field Radiation ◽  
Ridge Width ◽  
Thermal Emitter ◽  
Rigorous Coupled Wave

Near-field thermophotovoltaic (NFTPV) devices have received much attention lately as attractive energy harvesting systems, whereby a heated thermal emitter exchanges super-Planckian near-field radiation with a photovoltaic (PV) cell to generate electricity. This work describes the use of a grating structure to enhance the power throughput of NFTPV devices, while increasing thermal efficiency by ensuring that a large portion of the radiation entering the PV cell is above the bandgap. The device is modeled as a one-dimensional high-temperature tungsten grating on a tungsten substrate that radiates photons to a room-temperature In0.18Ga0.82Sb PV cell through a vacuum gap of several tens of nanometers. Scattering theory is used along with the rigorous coupled-wave analysis to calculate the radiation exchange between the grating emitter and the PV cell. A parametric study is performed by varying the grating depth, period, and ridge width in the range that can be fabricated using available fabrication technologies. By optimizing the grating parameters, it is found that the power output can be improved by 40% while increasing the energy efficiency by 6% as compared with the case of a flat tungsten emitter. Reasons for the enhancement are investigated and found to be due to the surface plasmon polariton resonance, which shifts towards lower frequencies. This work shows a possible way of improving NFTPV and sheds light on how grating structures interact with thermal radiation at the nanoscale.

scholarly journals Self-sustaining thermophotonic circuits

2019 ◽  
pp. 201904938
Author(s):  
Bo Zhao ◽  
Siddharth Buddhiraju ◽  
Parthiban Santhanam ◽  
Kaifeng Chen ◽  
Shanhui Fan
Keyword(s):  
Steady State ◽  
Power Density ◽  
Light Emitting Diodes ◽  
Near Field ◽  
State Power ◽  
Field Enhancement ◽  
Photon Flux ◽  
Light Emitting ◽  
General Importance ◽  
Thermophotovoltaic Systems

Photons represent one of the most important heat carriers. The ability to convert photon heat flow to electricity is therefore of substantial importance for renewable energy applications. However, photon-based systems that convert heat to electricity, including thermophotovoltaic systems where photons are generated from passive thermal emitters, have long been limited by low power density. This limitation persists even with near-field enhancement techniques. Thermophotonic systems, which utilize active photon emitters such as light-emitting diodes, have the potential to significantly further enhance the power density. However, this potential has not been realized in practice, due in part to the fundamental difficulty in thermodynamics of designing a self-sustaining circuit that enables steady-state power generation. Here, we overcome such difficulty by introducing a configuration where the light-emitting diodes are connected in series, and thus multiple photons can be generated from a single injected electron. As a result we propose a self-sustaining thermophotonic circuit where the steady-state power density can exceed thermophotovoltaic systems by many orders of magnitude. This work points to possibilities for constructing heat engines with light as the working medium. The flexibility of controlling the relations between electron and photon flux, as we show in our design, may also be of general importance for optoelectronics-based energy technology.

One-Chip Near-Field Thermophotovoltaic Device Integrating a Thin-Film Thermal Emitter and Photovoltaic Cell

Nano Letters ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 3948-3952 ◽  
Author(s):  
Takuya Inoue ◽  
Takaaki Koyama ◽  
Dongyeon Daniel Kang ◽  
Keisuke Ikeda ◽  
Takashi Asano ◽  
...  
Keyword(s):  
Thin Film ◽  
Near Field ◽  
Photovoltaic Cell ◽  
Thermal Emitter

scholarly journals Novel and efficient Mie-metamaterial thermal emitter for thermophotovoltaic systems

2016 ◽  
Vol 24 (10) ◽  
pp. A868 ◽  
Author(s):  
Alok Ghanekar ◽  
Laura Lin ◽  
Yi Zheng
Keyword(s):  
Thermal Emitter ◽  
Thermophotovoltaic Systems
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