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The photoelectrical characteristics of field-effect phototransistors (FEPTs) are investigated experimentally based on a graphene–PbS quantum dot (QD) hybrid. The device presented a wide spectral response range from 300 to 1400 nm because of multiple-exciton generation of PbS QDs. The photoelectrical responsivity reached up to $2\times 10^{5}\ \hbox{A/W}$ at low bias voltage ( $\sim$10 mV) and became...
A new configuration consisting of an arsenic trisulfide channel waveguide on top of an erbium (Er)-doped titanium-diffused -cut lithium niobate waveguide has been investigated by simultaneous analytical expressions, numerical simulations, and experimentation. Both simulation and experimental results have shown that this structure can enhance...
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