Power dense thermophotovoltaic cells

IF 1.9 Q3 PHYSICS, APPLIED EPJ Photovoltaics Pub Date : 2023-01-01 DOI:10.1051/epjpv/2023019
Alexander P. Kirk
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Abstract

Class-leading 2-junction (2J) thermophotovoltaic (TPV) cells have been developed with thermophotovoltaic efficiency exceeding 40%. However, these devices have sub-optimal power density because the subcell bandgaps are not matched to the emitter spectrum. Although efficiency is important, power density is also an important metric to gauge TPV cell performance; the greater the power density, the less total area of TPV cells that are needed to satisfy a given power generation target. To quantify the relevance of power density, spectrum-matched 1.04/0.78/0.62/0.48/0.36 eV 5-junction (5J) TPV cells have the potential to be 3.5 times more power dense than state-of-the-art, yet spectrum-mismatched, 1.4/1.2 eV 2J TPV cells when irradiated by a 2400 °C emitter. The proposed 5J TPV cells also have the potential to exceed 40% standard power conversion efficiency.
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功率密集的热光伏电池
领先的2结(2J)热光伏(TPV)电池已经开发出来,热光伏效率超过40%。然而,由于子单元带隙与发射频谱不匹配,这些器件具有次优功率密度。虽然效率很重要,但功率密度也是衡量冠脉光伏电池性能的重要指标;功率密度越大,满足给定发电目标所需的TPV电池总面积就越小。为了量化功率密度的相关性,光谱匹配的1.04/0.78/0.62/0.48/0.36 eV 5结(5J) TPV电池在2400°C发射器照射时,其功率密度可能是目前最先进的功率密度的3.5倍,但光谱不匹配的1.4/1.2 eV 2J TPV电池。提出的5J TPV电池也有可能超过40%的标准功率转换效率。
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来源期刊
EPJ Photovoltaics
EPJ Photovoltaics PHYSICS, APPLIED-
CiteScore
2.30
自引率
4.00%
发文量
15
审稿时长
8 weeks
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