Strong and stable photoluminescence from the semiconducting inner tubes within double walled carbon nanotubes | Zendy

Daisuke Shimamoto | Zendy; Hiroyuki Muramatsu | Zendy; Takuya Hayashi | Zendy; Yoong Ahm Kim | Zendy; Morinobu Endo | Zendy; Jin Sung Park | Zendy; Riichiro Saito | Zendy; Mauricio Terrones | Zendy; M. S. Dresselhaus | Zendy

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Strong and stable photoluminescence from the semiconducting inner tubes within double walled carbon nanotubes

Author(s) -

Daisuke Shimamoto,

Hiroyuki Muramatsu,

Takuya Hayashi,

Yoong Ahm Kim,

Morinobu Endo,

Jin Sung Park,

Riichiro Saito,

Mauricio Terrones,

M. S. Dresselhaus

Publication year - 2009

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3085966

Subject(s) - carbon nanotube , photoluminescence , materials science , chirality (physics) , exciton , absorbance , nanotechnology , chemical physics , dielectric , chemical engineering , optoelectronics , condensed matter physics , chemistry , engineering , chiral symmetry breaking , physics , quantum mechanics , chromatography , quark , nambu–jona lasinio model

We examined the optical features of single wall carbon nanotubes (SWNTs) and the inner tubes within double walled carbon nanotubes (DWNTs) having the same (n,m) chirality. The brighter and more stable photoluminescence signals as well as the larger absorbance were observed for the semiconducting inner tubes within DWNTs and not for SWNTs. The outer layers of DWNTs maintain the high structural integrity of the inner tubes during both oxidative purification and strong sonication steps and are responsible in increasing the dielectric screening (due to weaker Coulomb interaction); thus leading to a redshift of the E11S and E22S excitonic transitions.

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