Observation of excitonic effects in metallic single-walled carbon nanotubes

Patrick May; Hagen Telg; Guofang Zhong; John Robertson; Christian Thomsen; Janina Maultzsch

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Observation of excitonic effects in metallic single-walled carbon nanotubes

机译：金属单壁碳纳米管的激子效应观察

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Excitonic effects of metallic single-walled carbon nanotubes are measured with temperature-dependent resonant Raman spectroscopy. By changing the temperature in the range of 300-870 K, we observe variations in the optical transition energy E_(ii) as well as in the maximum Raman intensity. We find both dependences to be different for semiconducting and metallic single-walled carbon nanotubes. We suggest an interpretation in terms of excitons dissociated into free electron-hole pairs at temperatures related to the exciton binding energy. We furthermore discuss how the oscillator strength is influenced by temperature.

机译：金属单壁碳纳米管的激子效应通过温度依赖性共振拉曼光谱法进行测量。通过在300-870 K范围内改变温度，我们观察到了光学跃迁能E_（ii）以及最大拉曼强度的变化。我们发现半导体和金属单壁碳纳米管的两种依赖性是不同的。我们提出了一种在与激子结合能有关的温度下解离为自由电子-空穴对的激子的解释。我们还将讨论振荡器强度如何受温度影响。

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《Physical review》 |2010年第19期|p.195412.1-195412.6|共6页
作者
Patrick May; Hagen Telg; Guofang Zhong; John Robertson; Christian Thomsen; Janina Maultzsch;
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作者单位

Institut fuer Festkoerperphysik, Technische Universitaet Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany;

Institut fuer Festkoerperphysik, Technische Universitaet Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany;

Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom;

Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom;

Institut fuer Festkoerperphysik, Technische Universitaet Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany;

Institut fuer Festkoerperphysik, Technische Universitaet Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany;

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关键词
nanotubes;

机译：纳米管;

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1. Ultrafast luminescence kinetics of metallic single-walled carbon nanotubes: Possible evidence for excitonic luminescence [J] . Takeshi Koyama, Satoru Shimizu, Takeshi Saito, Physical review . 2012,第4期

机译：金属单壁碳纳米管的超快发光动力学：激子发光的可能证据
2. Excitonic Rayleigh scattering spectra of metallic single-walled carbon nanotubes [J] . Ermin Malic, rnJanina Maultzsch, rnStephanie Reich, Physical review . 2010,第11期

机译：金属单壁碳纳米管的激子瑞利散射光谱
3. Excitonic absorption spectra of metallic single-walled carbon nanotubes [J] . Ermin Malic, rnJanina Maultzsch, rnStephanie Reich, Physical review . 2010,第3期

机译：金属单壁碳纳米管的激子吸收光谱
4. Excitonic Effects and Optical Spectra of Single-Walled Carbon Nanotubes [C] . Catalin D. Spataru, Sohrab Ismail-BeigiD, Lorin X. Benedict, International Conference on the Physics of Semiconductors . 2005

机译：单壁碳纳米管的兴奋效应和光谱
5. Structure-Processing-Property Interrelationships of Vapor Grown Carbon Nanofiber, Single-Walled Carbon Nanotube and Functionalized Single-Walled Carbon Nanotube - Polypropylene Nanocomposites. [D] . Radhakrishnan, Vinod Karumathil. 2010

机译：气相生长的碳纳米纤维，单壁碳纳米管和功能化单壁碳纳米管-聚丙烯纳米复合材料的结构-工艺-性能相互关系。
6. Experimental determination of excitonic band structures of single-walled carbon nanotubes using circular dichroism spectra [O] . Xiaojun Wei, Takeshi Tanaka, Yohei Yomogida, -1

机译：利用圆二色光谱实验确定单壁碳纳米管的激子能带结构
7. Excitonic Rayleigh scattering spectra of metallic single-walled carbon nanotubes [O] . Malic, Ermin, Maultzsch, Janina, Reich, Stephanie, 2010

机译：金属单壁碳的激子瑞利散射光谱纳米管

Observation of excitonic effects in metallic single-walled carbon nanotubes

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