Development of a portable device for Ag+ sensing using CdTe QDs as fluorescence probe via an electron transfer process

Passivation and binding effects of Ag+ on traps of QDs could be relied on to explain the fluorescence response characteristics. Both of fluorescence intensity quenching and spectral red-shift could be used to realize linearly Ag+ detection. A portable sensing device based on 32 bit MCU was successfully applied for on-field Ag+ detection.157