High efficiency, large area, InGaAs/InPAs thermophotovoltaic cells

Siergiej, R.R.; Wernsman, B.; Derry, S.A.; Wehrer, R.J.; Link, S.D.; Palmisiano, M. N.; Riley, David R.; Murray, Christopher S.; Newman, F.H.; Hills, J.S.

doi:10.1109/drc.2001.937913

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The equation provided in Box 1 for calculating SE can be easily extended to multiple absorbers by splitting up the numerator to account for multiple bandgaps. Development of TPV pairs with tandem cells has been limited, [73][74][75][76][77] but theoretical studies are promising. 78…”

Section: Selective Cellsmentioning

confidence: 99%

Present Efficiencies and Future Opportunities in Thermophotovoltaics

Burger

Sempere

Roy-Layinde

et al. 2020

Joule

150

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Despite the relevance of thermophotovoltaic (TPV) conversion to many emerging energy technologies, identifying which aspects of current TPV designs are favorable and where opportunities for improvement remain is challenging because of the experimental variability in TPV literature, including emitter and cell temperatures, cavity geometry, and system scale. This review examines several decades of experimental TPV literature and makes meaningful comparisons across TPV reports by comparing each energy-conversion step to its respective, experiment-specific thermodynamic limit. We find that peak reported efficiencies are nearing 50% of their thermodynamic limit. Emitter-cell pairs that best manage the broad spectrum of thermal radiation exhibit the best efficiencies. Large gains in peak efficiency are expected from further suppression of sub-bandgap radiative transfer, as well as improvements in carrier management that address bandgap underutilization and Ohmic losses. Furthermore, there is a noticeable practical gap between the leading material pairs and integrated devices, mainly due to a lack of scaled-up high-performance materials, which exposes surfaces to parasitic heat loss. Provided these challenges are overcome, TPVs may ultimately provide power on demand and near the point of use, enabling greater integration of intermittent renewables.

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Section: Selective Cellsmentioning

confidence: 99%

Present Efficiencies and Future Opportunities in Thermophotovoltaics

Burger

Sempere

Roy-Layinde

et al. 2020

Joule

150

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“…In fact, tandem TPV devices have so far failed to improve on the performance of optimized single-junction photodiodes [178]. First, below-bandgap photons cannot be absorbed and therefore their energy cannot be harvested.…”

Section: Quantum Cascade-based Tvp Devicesmentioning

confidence: 99%

Epitaxy for Energy Materials

Fornari

2015

Handbook of Crystal Growth

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0.74/0.55-eV Ga/sub x/In/sub 1-x/As/InAsP/sub 1-y/ monolithic, tandem, MIM TPV converters: design, growth, processing and performance

Wehrer

Wanlass²,

Werrisman³

et al.

Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002.

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Thermophotovoltaic (TPV) tandem converter technology is being explored in an effort to improve both the efficiency and power density of TPV systems. Inverted, tandem structures incorporate epitaxially grown 0.74-eV latticematched Gadn0.53As and 0.55-eV lattice-mismatched Gao.2alno.72As diodes. Adddionally, a strategy has been developed to allow voltage matching between these two subcells. Performance modeling calculations show that, under typical operating conditions, the 0.74/0.55eV tandem converter should outperform a 0.55-eV single junction converter by 15% on an efficiency basis and by 15% on a power density basis. This paper will present details regarding the design, growth, fabrication, and electrical, optical. and structural characterization of voltage-matched tandem TPV devices.

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High efficiency, large area, InGaAs/InPAs thermophotovoltaic cells

Cited by 3 publications

References 2 publications

Present Efficiencies and Future Opportunities in Thermophotovoltaics

Present Efficiencies and Future Opportunities in Thermophotovoltaics

Epitaxy for Energy Materials

0.74/0.55-eV Ga/sub x/In/sub 1-x/As/InAsP/sub 1-y/ monolithic, tandem, MIM TPV converters: design, growth, processing and performance

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