▎ 摘　　要

We have prepared epitaxial graphene by a Si sublimation method from 4H-SiC. Single-particle spectroscopy of CdTe quantum dots (QDs) on epitaxial graphene covered with polyvinylpyrrolidone (PVP) or polyethylene glycol (PEG) showed the suppression of luminescence blinking and similar to 10 times decreased luminescence intensity as compared with those on a glass. The electronic coupling constant, H-01, between CdTe QDs and graphene was calculated to be (3.3 +/- 0.4) x 10(2) cm(-1) in PVP and (3.7 +/- 0.8) x 10(2) cm(-1) in PEG based on Marcus theory of electron transfer and Tang-Marcus model of blinking with statistical distribution. (C) 2014 AIP Publishing LLC.