Quantum well thermophotovoltaic energy converter

Details Quantum well thermophotovoltaic energy converter Quantum well thermophotovoltaic energy converter

1998-06-26

2000-11-21

Chapman, Mark

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136255, 136262, 257 21, 257 22, H01L 3100

Patent

active

061506044

ABSTRACT:
A thermophotovoltaic cell is provided containing strained or lattice-matched quantum wells that have a bandgap smaller than the bandgap of the InGaAs alloy. The alloy is lattice-matched to the substrate. These narrow bandgap quantum wells provide more efficient conversion of IR emission from a black body or other emitter by converting energy from a wider range of wavelengths than a conventional single junction cell. The thickness of the quantum well region and the individual thickness of the individual quantum wells are chosen to avoid lattice mismatch defects which cause degradation of thick conventional lattice mismatched devices.

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