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Nowadays the development of Internet of Things(IoT)and defense technologies imperatively needs high-performance photodetectors that can work in a broadband wavelength range,in particular,covering the mid-infrared(MIR)region[1].This generates great interest in the incorporation of a series of novel optoelectronic materials and structures into the photodetectors.Graphene and colloidal quantum dots(QDs)are key players among novel materials used to fabricate high-performance photodetectors[2–4].By taking advantage of the high mobility of graphene
Nowadays the development of Internet of Things (IoT) and defense technologies imperatively needs high-performance photodetectors that can work in a broadband wavelength range, in particular, covering the mid-infrared (MIR) region [1]. This makes great interest in the incorporation of a series of novel optoelectronic materials and structures into the photodetectors. Graphene and colloidal quantum dots (QDs) are key players among novel materials used to fabricate high-performance photodetectors [2-4] .By taking advantage of the high mobility of graphene