Hybrid 2D-0D MoS2 -PbS quantum dot photodetectors.
A hybrid phototransistor consisting of colloidal PbS quantum dots and few layers of MoS2 (≥2 layers) is demonstrated. The hybrid benefits from tailored light absorption in the quantum dots throughout the visible/near infrared region, efficient charge-carrier separation at the p-n interface, and fast carrier transport through the MoS2 channel. It shows responsivity of up to 10(6) A W(-1) and backgate-dependent sensitivity.
ICFO- Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860, Castelldefels, Barcelona, Spain.
Dominik
D
Kufer
Ivan
I
Nikitskiy
Tania
T
Lasanta
Gabriele
G
Navickaite
Frank H L
FH
Koppens
Gerasimos
G
Konstantatos
D004220:Disulfides / Q000737:chemistry*; D055615:Electrical Equipment and Supplies; D004867:Equipment Design; D007854:Lead / Q000737:chemistry*; D008027:Light; D008982:Molybdenum / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D061848:Optical Imaging; D045663:Quantum Dots; D013059:Spectrum Analysis, Raman; D013440:Sulfides / Q000737:chemistry*
D004220:Disulfides; D013440:Sulfides; C018391:lead sulfide; D007854:Lead; D008982:Molybdenum; C082964:molybdenum disulfide
MoS2; hybrid; photodetectors; quantum dots