Relative Ordering between Bright and Dark Excitons in Single-walled Carbon Nanotubes
文献类型：期刊论文
| 作者 | Zhou, WH ; Nakamura, D ; Liu, HP ; Kataura, H ; Takeyama, S |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2014 |
| 卷号 | 4 |
| ISSN号 | 2045-2322 |
| 通讯作者 | Takeyama, S (reprint author), Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan. |
| 中文摘要 | The ordering and relative energy splitting between bright and dark excitons are critical to the optical properties of single-walled carbon nanotubes (SWNTs), as they eventually determine the radiative and non-radiative recombination processes of generated carriers. In this work, we report systematic high-field magneto-optical study on the relative ordering between bright and dark excitons in SWNTs. We identified the relative energy position of the dark exciton unambiguously by brightening it in ultra-high magnetic field. The bright-dark excitonic ordering was found to depend not only on the tube structure, but also on the type of transitions. For the 1st sub-band transition, the bright exciton appears to be higher in energy than its dark counterpart for any chiral species and is robust against environmental effect. While for the 2nd sub-band, their relative ordering was found to be chirality-sensitive: the bright exciton can be either higher or lower than the dark one, depending on the specific nanotube structures. These findings provide new clues for engineering the optical and electronic properties of SWNTs. |
| 资助信息 | Institute for Solid State Physics, University of Tokyo; JSPS [25220602]; "100 talents project'' of CAS |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59686]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhou, WH,Nakamura, D,Liu, HP,et al. Relative Ordering between Bright and Dark Excitons in Single-walled Carbon Nanotubes[J]. SCIENTIFIC REPORTS,2014,4. |
| APA | Zhou, WH,Nakamura, D,Liu, HP,Kataura, H,&Takeyama, S.(2014).Relative Ordering between Bright and Dark Excitons in Single-walled Carbon Nanotubes.SCIENTIFIC REPORTS,4. |
| MLA | Zhou, WH,et al."Relative Ordering between Bright and Dark Excitons in Single-walled Carbon Nanotubes".SCIENTIFIC REPORTS 4(2014). |
入库方式： OAI收割
来源：物理研究所
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