Nonlinear optical enhancement induced by synergistic effect of graphene nanosheets and CdS nanocrystals

Journal Article · Mon Jun 20 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4954716· OSTI ID:22590817

Zhu, Baohua; Cao, Yawan; Wang, Chong; Wang, Ji; Gu, Yuzong ^[1]; Wang, Fangfang ^[2]

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1. Institute of Microsystem, School of Physics and Electronics, Henan University, Kaifeng 475004 (China)
2. Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083 (China)

CdS nanocrystals are attached on graphene nanosheets and their nonlinear optical properties are investigated by picosecond Z-scan technique at 532 nm. We found that synergistic effect between the graphene and CdS makes a major enhancement on the nonlinear optical absorption of graphene/CdS nanohybrid in comparison with cooperative effect, and the synergistic improvement is restricted by nonradiative defects in hybrid. The synergistic mechanism involving the local field theory and charge transfer evolution is proposed.

• OSTI ID: 22590817
• Journal Information: Applied Physics Letters, Vol. 108, Issue 25; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
CADMIUM SULFIDES
GRAPHENE
NANOSTRUCTURES
NONLINEAR PROBLEMS
OPTICAL PROPERTIES
SHEETS