Carlson Lisa J, Maccagnano Sara E, Zheng Ming, Silcox John, Krauss Todd D
Chemistry Department, University of Rochester, Rochester, NY 14627, USA.
Nano Lett. 2007 Dec;7(12):3698-703. doi: 10.1021/nl072014+. Epub 2007 Nov 13.
The luminescence efficiency of individual single-walled carbon nanotubes was determined by comparing the fluorescence from individual nanotubes to single CdTe/ZnS quantum dots with a well-defined fluorescence quantum yield (QY). The single carbon nanotube QY was determined to be 3 +/- 1%, nearly 100 times greater than values previously reported for ensembles. The intrinsic nanotube QY is potentially much higher than previously believed and appears lower in ensembles due to defective nanotubes and residual bundles.
通过将单个单壁碳纳米管的荧光与具有明确荧光量子产率（QY）的单个CdTe/ZnS量子点的荧光进行比较，确定了单个单壁碳纳米管的发光效率。单个碳纳米管的量子产率测定为3±1%，几乎比之前报道的整体值大100倍。碳纳米管的本征量子产率可能比之前认为的要高得多，并且由于有缺陷的纳米管和残留束，在整体中看起来较低。
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