High‐pressure optical study of bromine‐doped single‐walled carbon nanotube films
High‐pressure optical study of bromine‐doped single‐walled carbon nanotube films
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DOI：
10.1002/pssb.201451160
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
J. Strauch;B. Anis;C. Kuntscher
中科院分区：
文献类型：
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作者：
J. Strauch;B. Anis;C. Kuntscher
我们提出了一个高压光谱研究单壁碳纳米管（SWCNTs）掺杂溴使用氮气作为压力传输介质。采用气相法制备了不同掺杂水平的溴掺杂单壁碳纳米管（Br-SWCNTs），并通过光学和拉曼光谱对其进行了表征。吸收和拉曼光谱清楚地揭示了溴的电荷掺杂的效果。与原始SWCNT一样，Br-SWCNT的吸收带在压力下显示出红移。压力引起的相对频移的异常表明纳米管的结构变化。结果进行了比较与空纳米管。
We present a high‐pressure optical spectroscopy study on single‐walled carbon nanotubes (SWCNTs) doped with bromine using nitrogen as pressure transmitting medium. Bromine‐doped SWCNTs (Br‐SWCNTs) with different doping levels were prepared by the gas phase method and characterized by optical and Raman spectroscopy. The absorption and Raman spectra clearly reveal the effects of charge doping by bromine. Like for pristine SWCNTs, the absorption bands of Br‐SWCNTs show a red shift under pressure. Anomalies in the pressure‐induced relative frequency shift indicate structural changes in the nanotubes. The results are compared with those for empty nanotubes.