A refractory metal-based photonic narrowband emitter for thermophotovoltaic energy conversion

Chen, Fangqi; Liu, Xiaojie; Liu, Yang; Tian, Yanpei; Zheng, Yi

doi:10.1039/d2tc04644j

Cited by 3 publications

(1 citation statement)

References 52 publications

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“…However, the complex geometry and the complicated fabrication process give rise to high manufacturing costs of the emitters, and it is difficult to guarantee their thermal stability in long-term high-temperature service. Spectrally selective thermal emitters with multilayer structures based on transition metal oxides, , refractory metals, , heavily doped semiconductors, and metal/dielectric coatings, , etc., can enable large-area fabrication. However, these emitters suffer from inferior spectral selectivity and relatively low stable temperature (<1273 K), unsuitable for practical TPV systems.…”

Section: Introductionmentioning

confidence: 99%

High-Selectivity Planar Thermal Emitter with a Stable Temperature over 1400 K for a Thermophotovoltaic System

Wang,

Wu,

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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A selective thermal emitter with superior thermal stability and perfect selective thermal emission in specific bands can facilitate the lifting of the thermophotovoltaic (TPV) energy conversion efficiency in TPV systems. Scalable planar selective thermal emitters with superior spectral selectivity and robust hightemperature stability are desired to meet the requirements of large-scale deployments of TPV systems. However, stably reradiating the available thermal photons at above 1273 K remains a significant challenge for selective thermal emitters. In this work, we demonstrated a high-selectivity planar thermal emitter based on the composite ceramic of ZrC and Al 2 O 3 . The prepared selective thermal emitter provides an emissivity of around 90% above the photon energy (0.6 eV) at 1423 K, a strong emission suppression effect below 0.6 eV, and superior thermal stability up to at least 1423 K. Therefore, the overall spectral efficiency can reach around 53%. Coupled with an InGaAs PV cell, the TPV system based on the selective thermal emitter demonstrates a predicted heat-to-electricity power conversion efficiency of 29.78% at 1423 K due to the matched spectral response of the emitter with the PV cell. Our work opens a new way forward for TPV systems based on planar selective thermal emitters.

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Section: Introductionmentioning

confidence: 99%

High-Selectivity Planar Thermal Emitter with a Stable Temperature over 1400 K for a Thermophotovoltaic System

Wang,

Wu,

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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VO2-based switchable thermal emitters using magnetic polaritons

Jin,

Song,

Chen

et al. 2024

Journal of Quantitative Spectroscopy and Radiative Transfer

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Design of efficient thermophotovoltaic system based on meta-material narrow-band emitter for space power supply

Tian

Sun

et al. 2024

THERM SCI

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Photovoltaic technology has been widely used in spacecraft power supply, but its efficiency is difficult to be greatly improved by Shockley-Queisser limitation. The thermophotovoltaic technology can convert solar radiation energy or high-temperature combustion energy into radiation energy with reshaped spectrum for direct photovoltaic power generation. In this study, a meta-material structure composed of metal Ta and dielectric SiO2 is innovatively proposed for shaping narrowband radiation. The results show that the optimized spectral emittance peak of narrowband emitters reaches 0.9998. Narrowband emitter has advantages at high temperatures above 1000 K. The thermophotovoltaic efficiency of InGaAsSb cell and tandem Si/InGaAsSb cells can reach more than 41.67% and 46.26%, respectively. It is significantly higher than published thermophotovoltaic system with broadband emitter. This study demonstrates the notable advantages and potential of narrowband emitter for spectrum reshaping, which provides an important reference for future spacecraft power supply as well as space solar power generation.

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A refractory metal-based photonic narrowband emitter for thermophotovoltaic energy conversion

Abstract: Thermophotovoltaics is a promising technology for heat recovery and has garnered tremendous attention in the past decades. In the thermophotovoltaics system, a selective emitter is required to convert the incoming...

Cited by 3 publications

References 52 publications

High-Selectivity Planar Thermal Emitter with a Stable Temperature over 1400 K for a Thermophotovoltaic System

High-Selectivity Planar Thermal Emitter with a Stable Temperature over 1400 K for a Thermophotovoltaic System

VO2-based switchable thermal emitters using magnetic polaritons

Design of efficient thermophotovoltaic system based on meta-material narrow-band emitter for space power supply

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