Photoresponse mechanisms of a graphene-based quantum-dot monolayer structure

Journal Article · Tue Oct 31 00:00:00 EDT 2017 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL16255· OSTI ID:22724661

Ammar, J. K. Al-Alwani; Chumakov, A S; Glukhovskoy, E G ^[1]; Pozharov, M V ^[2]

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1. Saratov State University (Russian Federation)
2. Institute of Chemistry, Saratov State University (Russian Federation)

Hybrid structures of graphene sheets based quantum dots (QDs) are produced via Langmuir–Blodgett (LB) technique. Morphology of the structures produced is investigated by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Two types of hybrid structures are prepared from graphene covered by sublayers of CdSe/CdS/ZnS and CdSe/ZnS QDs. Photocurrent properties are studied by current–voltage characteristics (CVCs) in the dark and while exposed to visible light and ultraviolet (UV) light with an excitation wavelength of 365 nm. The rise and decay times of graphene and QDs after UV illumination are estimated. (laser applications and other topics in quantum electronics)

• OSTI ID: 22724661
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 47, Issue 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC FORCE MICROSCOPY
CADMIUM SELENIDES
CADMIUM SULFIDES
ELECTRIC POTENTIAL
EXCITATION
GRAPHENE
ILLUMINANCE
MORPHOLOGY
PHOTOCURRENTS
QUANTUM DOTS
SCANNING ELECTRON MICROSCOPY
ULTRAVIOLET RADIATION
VISIBLE RADIATION
WAVELENGTHS
ZINC SULFIDES