Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 2, Issue 16, Pages 2851-2858Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tc32568g
Keywords
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Funding
- National Natural Science Foundation of China [11004004]
- Beijing Municipal Natural Science Foundation [1112004]
- CSIRO's OCE Science Leadership Scheme
- Australian Research Council
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Carbon nanoflakes (CNFLs) are synthesized on silicon substrates deposited with carbon islands in a methane environment using hot filament chemical vapor deposition. The structure and composition of the CNFLs are studied using field emission scanning electron microscopy, high-resolution transmission electron microscopy, micro-Raman spectroscopy, and X-ray photoelectron spectroscopy. The results indicate that the CNFLs are composed of multilayer graphitic sheets and the area and thickness of CNFs increase with the growth time. The photoluminescence (PL) of CNFLs excited by a 325 nm He-Cd laser exhibits three strong bands centered at 408, 526, and 699 nm, which are related to the chemical radicals terminated on the CNFLs and the associated interband transitions. The PL results indicate that the CNFLs are promising as an advanced nano-carbon material capable of generating white light emission. These outcomes are significant to control the electronic structure of CNFLs and contribute to the development of next-generation solid-state white light emission devices.
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