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- W2024760167 abstract "The operation of solar cells incorporating multiple repeat units of InAs quantum dot structures, as well as those withand without δ-doping of 4 and 8 electrons per quantum dot, were studied. Room temperature measurements of thesesamples revealed high quality devices, but insignificant differences between δ-doped samples and undoped samples.An IR-pumped quantum efficiency measurement was performed at 6 K to probe the extraction of quantum confinedcarriers through a two-photon process while shutting off phonon-assisted extraction. No two-photon signal roseabove the noise, but additional sub-bandgap illuminated IV curves revealed current generation in the quantum dotdevices, suggesting the dominant carrier removal mechanism is through tunneling. Finally, dark-diode data wastaken and fit to determine ideality factor as a function of temperature. Control devices had an overall larger ideality,while QD devices exhibited variations as a function of temperature, which were attributed to kinetic barriers in thefirst QD layers, as well as possible Auger recombination at very low temperature." @default.
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- W2024760167 date "2012-02-07" @default.
- W2024760167 modified "2023-09-23" @default.
- W2024760167 title "Spectroscopic analysis of InAs quantum dot solar cells" @default.
- W2024760167 doi "https://doi.org/10.1117/12.911004" @default.
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