Optical properties of nanotube bundles by photoluminescence excitation and absorption spectroscopy
文献类型：期刊论文
| 作者 | Tan, P. H.1,2; Hasan, T.1; Bonaccorso, F.1,3; Scardaci, V.1; Rozhin, A. G.1; Milne, W. I.1; Ferrari, A. C.1 |
| 刊名 | Physica e-low-dimensional systems & nanostructures
 |
| 出版日期 | 2008-05-01 |
| 卷号 | 40期号:7页码:2352-2359 |
| 关键词 | Photoluminescence excitation Absorption Bundle Carbon nanotube |
| ISSN号 | 1386-9477 |
| DOI | 10.1016/j.physe.2007.10.058 |
| 通讯作者 | Tan, p. h.(pt290@eng.cam.ac.uk) |
| 英文摘要 | Photoluminescence excitation (ple) and absorption spectroscopy are applied to investigate the impact of bundle size on the optical properties of single wall carbon nanotube (swnt) bundles in aqueous suspensions. the existence and gradual formation of small bundles happens in aqueous suspensions even after ultrasonication and ultracentrifugation. with time, the emission and absorption spectra show weaker intensities and broader spectral profiles, confirming the formation of bigger saint bundles. we detect new ple features assigned to energy transfer from excitons and excitonic phonon sidebands of donors to eh(11) excitons of acceptors in such suspensions. in addition, the photoluminescence intensity from large gap nanotube donors weakens, while that from the smaller gap acceptors increases because of the exciton energy transfer. our results caution the use of photoluminescence to determine the abundance of different swnt species in conventionally prepared aqueous suspensions. on the contrary, absorption measurements represent a more reliable technique to reveal such information. (c) 2007 elsevier b.v. all rights reserved. |
| WOS关键词 | WALLED CARBON NANOTUBES |
| WOS研究方向 | Science & Technology - Other Topics ; Physics |
| WOS类目 | Nanoscience & Nanotechnology ; Physics, Condensed Matter |
| 语种 | 英语 |
| WOS记录号 | WOS:000257186500027 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427450 |
| 专题 | 半导体研究所 |
| 通讯作者 | Tan, P. H. |
| 作者单位 | 1.Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England 2.State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 3.Univ Messina, CNR, Ist Proc Chim Fis, I-98166 Messina, Italy 4.Univ Messina, Dept Fis Mat & Tecnol Fis Avanzate, I-98166 Messina, Italy |
| 推荐引用方式 GB/T 7714 | Tan, P. H.,Hasan, T.,Bonaccorso, F.,et al. Optical properties of nanotube bundles by photoluminescence excitation and absorption spectroscopy[J]. Physica e-low-dimensional systems & nanostructures,2008,40(7):2352-2359. |
| APA | Tan, P. H..,Hasan, T..,Bonaccorso, F..,Scardaci, V..,Rozhin, A. G..,...&Ferrari, A. C..(2008).Optical properties of nanotube bundles by photoluminescence excitation and absorption spectroscopy.Physica e-low-dimensional systems & nanostructures,40(7),2352-2359. |
| MLA | Tan, P. H.,et al."Optical properties of nanotube bundles by photoluminescence excitation and absorption spectroscopy".Physica e-low-dimensional systems & nanostructures 40.7(2008):2352-2359. |
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