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Title: Wavelength-selective thermal extraction for higher efficiency and power density thermophotovoltaics

Abstract

Thermophotovoltaics have long been of interest as an energy conversion technology but suffer from low power density and low efficiency. Structured emitters designed to alter the emission spectrum and increase the efficiency are not stable at the necessary high emitter temperatures and also reduce the power density. Here, we propose a wavelength-selective thermal extraction device that mitigates these challenges and demonstrate a transfer-printing process needed to fabricate the device. The device consists of a ZnS solid hemisphere with a patterned thin film optical filter that passively increases the far-field radiated flux from an emitter within a wavelength band near the bandgap of a photovoltaic cell. Crucially, the device does not need to be in physical contact with the emitter and thus can be maintained at a lower temperature, circumventing the thermal stability challenge. Our work helps one to address long-standing issues with applications of thermophotovoltaics.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States). Division of Engineering and Applied Science
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Light-Material Interactions in Energy Conversion (LMI); California Inst. of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1566652
Grant/Contract Number:  
SC0001293
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 124; Journal Issue: 18; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; solar (photovoltaic); solid state lighting; phonons; thermal conductivity; electrodes - solar; materials and chemistry by design; optics; synthesis (novel materials); synthesis (self-assembly)

Citation Formats

Jurado, Zoila, Kou, Junlong, Kamali, Seyedeh Mahsa, Faraon, Andrei, and Minnich, Austin J. Wavelength-selective thermal extraction for higher efficiency and power density thermophotovoltaics. United States: N. p., 2018. Web. doi:10.1063/1.5049733.
Jurado, Zoila, Kou, Junlong, Kamali, Seyedeh Mahsa, Faraon, Andrei, & Minnich, Austin J. Wavelength-selective thermal extraction for higher efficiency and power density thermophotovoltaics. United States. doi:10.1063/1.5049733.
Jurado, Zoila, Kou, Junlong, Kamali, Seyedeh Mahsa, Faraon, Andrei, and Minnich, Austin J. Tue . "Wavelength-selective thermal extraction for higher efficiency and power density thermophotovoltaics". United States. doi:10.1063/1.5049733. https://www.osti.gov/servlets/purl/1566652.
@article{osti_1566652,
title = {Wavelength-selective thermal extraction for higher efficiency and power density thermophotovoltaics},
author = {Jurado, Zoila and Kou, Junlong and Kamali, Seyedeh Mahsa and Faraon, Andrei and Minnich, Austin J.},
abstractNote = {Thermophotovoltaics have long been of interest as an energy conversion technology but suffer from low power density and low efficiency. Structured emitters designed to alter the emission spectrum and increase the efficiency are not stable at the necessary high emitter temperatures and also reduce the power density. Here, we propose a wavelength-selective thermal extraction device that mitigates these challenges and demonstrate a transfer-printing process needed to fabricate the device. The device consists of a ZnS solid hemisphere with a patterned thin film optical filter that passively increases the far-field radiated flux from an emitter within a wavelength band near the bandgap of a photovoltaic cell. Crucially, the device does not need to be in physical contact with the emitter and thus can be maintained at a lower temperature, circumventing the thermal stability challenge. Our work helps one to address long-standing issues with applications of thermophotovoltaics.},
doi = {10.1063/1.5049733},
journal = {Journal of Applied Physics},
number = 18,
volume = 124,
place = {United States},
year = {2018},
month = {11}
}

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