Optical absorption of ion irradiated multi-walled carbon nanotube sheets in the visible to terahertz ranges

Optical absorption of ion irradiated multi-walled carbon nanotube sheets in the visible to terahertz ranges 1 2 first-author 1 corresp Corresponding author. E-mail address: yanlong@sinap.ac.cn Corresponding author. E-mail address: yanlong@sinap.ac.cn yanlong@sinap.ac.cn 1 1 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China Optical absorption of Ar and H ion beam irradiated multi-walled carbon nanotube (MWCNT) sheets at various doses in the visible and terahertz spectral ranges was investigated. It was found that the optical absorption of MWCNT sheets in the visible range was decreased with increasing ion irradiation dose. Similar behavior was observed in terahertz range, where the optical absorption of MWCNT sheets in the range of 0 to 1.5 THz was also decreased with increasing ion irradiation dose. The optical absorption decreases in irradiated MWCNT sheets can be ascribed to the increase of defects in the irradiated MWCNTs. Carbon nanotubes Ion irradiation Optical absorption References Zhang D , Ryu K , Liu X , et al . Nano Lett , 2006 , 6 : 1880 - 1886 . Nano Lett Rowell M W , Topinka M A , Mcgehee M D . Appl Phys Lett , 2006 , 88 : 233506 - 233508 . Appl Phys Lett Bachtold A , Hadley P , Nakanishi T , et al . Science , 2001 , 294 : 1217 - 1320 . Science Gao M , Dai L , Wallace G G . Electroanalysis , 2003 , 15 : 1089 - 1094 . Electroanalysis Skakalova V , Kaiser A B , Osvath Z , et al . Appl Phys A , 2008 , 90 : 597 - 602 . Appl Phys A Kaiser A B , Skakalova V , Roth S . Phys Stat Sol (b) , 2007 , 244 : 4199 - 4203 . Phys Stat Sol (b) Skakalova V , Kaiser A B , Osvath Z , et al . Phys Stat Sol (b) , 2008 , 245 : 2280 - 2283 . Phys Stat Sol (b) Ishaq A , Yan L , Zhu D Z . Nucl Instrum Methods B , 2009 , 267 : 1779 - 1782 . Nucl Instrum Methods B Hu L , Hecht D S , Grüner G . Nano Lett , 2004 , 4 : 2513 - 2517 . Nano Lett Zhang M , Fang S L , Zakhidov A A , et al . Science , 2005 , 309 : 1215 - 1219 . Science Jeon T I , Son J H , An G H , et al . J Kor Phys Soc , 2001 , 39 : S185 - S188 . J Kor Phys Soc Kang C , Maeng I H , Oh S J , et al . Phys Rev B , 2007 , 75 : 85410 - 85414 . Phys Rev B Broitman E , Lindquist O P A , Hellgren N , et al . J Vac Sci Tech A , 2003 , 21 : L23 - L27 . J Vac Sci Tech A 10.13538/j.1001-8042/nst.20.197-201 Supported by Chinese Academy of Sciences Knowledge Innovation Program (No. KJCX3.SYW.N10) and National Natural Science Foundation of China (No.10775171) 2009-04-17 2009-08-20 2021-01-19 2009 Nuclear Science and Techniques 04 20