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51% Efficient Photonic Power Converters for O-Band Wavelengths around 1310 nm

: Helmers, H.; Franke, A.; Lackner, D.; Höhn, O.; Predan, F.; Dimroth, F.


Institute of Electrical and Electronics Engineers -IEEE-:
47th IEEE Photovoltaic Specialists Conference, PVSC 2020 : 15-21 June 2020, Calgary, Canada, Virtual Meeting
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-6116-7 (Print)
ISBN: 978-1-7281-6115-0
Photovoltaic Specialists Conference (PVSC) <47, 2020, Online>
Conference Paper
Fraunhofer ISE ()
Photovoltaik; 1310 nm; GaInAs; III-V semiconductor; InGaAsP; Laser Power Converter; metamorphic; O-band; Optical Power Transmission; photonic power converter; Power-by-Light; power-over-fiber; III-V- und Konzentrator-Photovoltaik; III-V Epitaxie und Solarzellen; Power-by-Light

Photovoltaic cells for conversion of wavelengths in the O-band around 1310 nm are developed. Excellent performance with an efficiency of 51.1% at elevated irradiance is demonstrated with an InGaAsP based cell grown lattice matched on InP. Under one sun irradiance a bandgap-voltage difference of only W OC =331 mV is achieved. In addition, metamorphic GaInAs cells are introduced, which are grown on a step graded metamorphic buffer on GaAs substrates. Despite the metamorphic growth, good material quality as well as promising uniformity across a full 4” wafer are demonstrated with a median bandgap-voltage difference of W OC =226 mV at elevated short-circuit current densities of about 2.7 A/cm 2.