Heteroatom doping of carbon quantum dots not only enables great improvement of
fluorescence efficiency and tunability of fluorescence emission, but also provides active sites
in carbon dots to broaden their application in sensor. Silicon as a biocompatible element
offers a promising direction for doping of carbon quantum dots. Si-doped carbon quantum
dots (SiCQDs) were synthesized through a facile and effective approach. The as-prepared
Si-doped carbon quantum dots possess visible fluorescence with high quantum yield up to …