Observation of photon recycling in strain-balanced quantum well solar cells
Résumé
Photon recycling in strain balanced quantum well solar cells grown on distributed Bragg reflectors has been observed as a suppression of the dark current and a change in electroluminescence spectra. Comparing devices grown with and without distributed Bragg reflectors we have demonstrated up to a 33% reduction in the ideality n = 1 reverse saturation current. Furthermore, to validate the observations we demonstrate how both the measured dark currents and electroluminescence spectra fit very well to a photon recycling model. Verifying our observations with the model then allows us to calculate optimised device designs.
Domaines
Physique [physics]
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DaveJohnson-Photon Recycling-APL_2020_HAL_version.pdf (316.63 Ko)
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