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Near-infrared inorganic/organic optical upconverter with an external power efficiency of>100%

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Academic year: 2021

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Figure      4a   shows the measured photocurrent density (total  current density minus dark current density) as a function of  device bias under 1.5   µ  m infrared radiation (1.2 mW/cm 2  ),  together with the calculated responsivity of the HPT  com-ponen

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