期刊
CHEMICAL PHYSICS LETTERS
卷 499, 期 1-3, 页码 152-157出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2010.09.030
关键词
-
资金
- Department of Science and Technology, India
- University Grants Commission, India
Third-order nonlinear absorption and refraction coefficients of a few-layer boron carbon nitride (BCN) and reduced graphene oxide (RGO) suspensions have been measured at 3.2 eV in the femtosecond regime. Optical limiting behavior is exhibited by BCN as compared to saturable absorption in RGO. Nondegenerate time-resolved differential transmissions from BCN and RGO show different relaxation times. These differences in the optical nonlinearity and carrier dynamics are discussed in the light of semiconducting electronic band structure of BCN vis-a-vis the Dirac linear band structure of graphene. (C) 2010 Elsevier B.V. All rights reserved.
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