A PbS-based NIR hybrid photodetector with an external quantum efficiency (EQE) above 100% is created by integrating zinc oxide (ZnO) quantum dots (QDs) to induce a photoconductive gain. The dual-QD hybrid photodetector also shows a tenfold higher responsivity than that of commercial SiC and Si photodetectors in the UV–visible range at room temperature.
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Dong et al. (2014) studied this question.
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