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Comparison of the Optical Waveguide Behaviors of Se-Doped and Undoped CdS Nanoribbons by Using Near-Field Optical Microscopy

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We report the Se-doped and undoped CdS nanoribbons synthesized by a Au-catalyzed thermal evaporation route, have good optical waveguide behaviors. Optical measurements demonstrate light can be guided on sub-wavelength scales along CdS nanoribbons with assembled structures, such as branched and crossed structures. The guided photoluminescence (PL) spectra along Se-doped and undoped CdS nanoribbons at different propagation distance were investigated by using near-field optical microscopy. Both the guided PL spectra of Se-doped and undoped CdS nanoribbons show redshifts because of the band-edge absorption. And the redshift of guided PL spectra of Se-doped nanoribbon is more than undoped CdS nanoribbon at the same PL propagation distance, because the internal disorder of Se-doped nanoribbon is more than that of undoped nanoribbon.
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Document Type: Research Article

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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