碳纳米管束的光致发光光谱：激子能量转移的证据
Photoluminescence spectroscopy of carbon nanotube bundles: evidence for exciton energy transfer.
作者信息
Tan P H, Rozhin A G, Hasan T, Hu P, Scardaci V, Milne W I, Ferrari A C
机构信息
Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom.
出版信息
Phys Rev Lett. 2007 Sep 28;99(13):137402. doi: 10.1103/PhysRevLett.99.137402. Epub 2007 Sep 27.
Abstract
We investigate photoluminescence of nanotube bundles. Their spectra are explained by exciton energy transfer between adjacent tubes, whereby excitation of large gap tubes induces emission from smaller gap ones. The consequent relaxation rate is faster than nonradiative recombination, leading to enhanced photoluminescence of acceptor tubes.
摘要
我们研究了纳米管束的光致发光。它们的光谱可以通过相邻管之间的激子能量转移来解释，即大带隙管的激发会诱导小带隙管的发射。由此产生的弛豫速率比非辐射复合快，从而导致受体管的光致发光增强。
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