Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 179, Issue -, Pages 334-338Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2017.12.031
Keywords
Thermophotovoltaics; Indium arsenide; Waste heat recovery; Quantum efficiency
Funding
- EPSRC [EP/P012035/1]
- University of Sheffield EPRSC IAA Account under an EPSRC Grant [EP/K503812/1, EP/H0131464/1]
- Royal Academy of Engineering [10216/114]
- Joy Welch Educational Charitable Trust [115597145]
- Engineering and Physical Sciences Research Council [EP/P012035/1] Funding Source: researchfish
- EPSRC [EP/P012035/1] Funding Source: UKRI
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InAs thermophotovoltaic (TPV) cells with external quantum efficiency at the peak wavelengths reaching 71% at low temperature and 55% at room temperature are reported, which are the highest values to date for InAs. The TPV exhibited 10% power conversion efficiency at 100 K cell temperature. The dark and light current-voltage characteristics were measured at different cell temperatures (100-340 K) in response to heat sources in the range 500-800 C. The resulting dependences of the output voltage and current as well as the spectral response of the InAs TPV have been extensively characterized for waste heat recovery applications. The performance of these cells is strongly determined by the dark current which increases rapidly with increasing cell temperature originating from bandgap narrowing, which resulted in a reduction of open circuit voltage and output power.
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