A one-pot synthesis of reduced graphene oxide–Cu2S quantum dot hybrids for optoelectronic devices

Abstract

We demonstrate a facile one-pot approach for the synthesis of reduced graphene oxide (rGO)-cuprous sulfide quantum dot (Cu₂S QD) hybrids, wherein the reduction of GO and the growth of Cu₂S QDs on graphene occur simultaneously. The as-synthesized rGO-Cu₂S QD hybrids exhibit an excellent photoelectric response and efficient electron transfer from the Cu₂S QDs to the rGO sheets.

A novel photoconductive UV detector based on ZnO/RGO composite with enhanced photoresponse performance

“…White snow-like ZnO nanowires were formed rapidly at the end of the furnace. The RGO sheet was prepared according to the references reported before [10,11]. The resultant ZnO nanowires and RGO sheet (mass ratio with ZnO to RGO was 50:1) were dissolved in ethanol solution (50 mL) and treated by ultrasonic bath for 1 h. The electrodes for the detectors were fabricated by the standard microfabrication procedure [12].…”

Design, Synthesis, and Characterization of Graphene–Nanoparticle Hybrid Materials for Bioapplications

“…In addition, various chalcogenide QDs such as CdS, 63 ZnS, 64 Cu 2 S, 65 MoS 2 , 66 Sn 3 S 4 , 67 and CdTe 68 have been successfully immobilized on graphene utilizing hydrothermal methods. These semiconductor nanostructures have attracted intense interest due to their fundamental importance as well as their enormous potential in optoelectronic, magnetic, and catalytic applications.…”

A study on structural, optical, and electrical characteristics of perovskite CsPbBr3 QD/2D-TiSe2 nanosheet based nanocomposites for optoelectronic applications

“…53 As reported previously, PL quenching of the perovskite QDs can be achieved by adding different nanomaterials such as graphene, CNT, and 2D-NSs. 2,7,32,51,54–60 The PL quenching of CsPbBr 3 QDs at the surface of TiSe 2 NSs is recognized as non-radiative relaxation of excitons via a different decay route made by TiSe 2 NSs. Exciton non-radiative relaxation from the excited state can arise by excited-state charge transfer or energy transfer from the nanocomposite nanomaterial.…”