Photoluminescence enhancement of aligned arrays of single-walled carbon nanotubes by polymer transfer

Photoluminescence enhancement of aligned arrays of single-walled carbon nanotubes by polymer transfer† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c5nr05163k Click here for additional data file.

Polarized Raman and Photoluminescence Characterization of Vertically Aligned Single-Walled Carbon Nanotubes

Polarized Raman and photoluminescence studies were employed to characterize vertically aligned single-walled carbon nanotubes (VA-SWNTs) synthesized by the alcohol catalytic CVD (ACCVD) method [1,2]. The high-purity VA-SWNT film with average nanotube diameter of 2 nm can be grown up to 30 μm with in-situ observation of film thickness [3]. When the film is excited from the top surface, we found ...

Environmental effects on photoluminescence of single-walled carbon nanotubes

Spectroscopy is a powerful technique to characterize single-walled carbon nanotubes (SWNTs). In particular, photoluminescence (PL) and the excitation spectroscopies have made a great advance in understanding the energy states and transition processes of excitons in SWNTs. The PL spectroscopy also has a potential to assign the chiral index (n,m) of a SWNT and to evaluate the abundance of (n,m) i...

Polarized photoluminescence excitation spectroscopy of single-walled carbon nanotubes.

The polarized photoluminescence excitation spectra of twenty-five single-walled carbon nanotube species are reported. For light polarized along the nanotube axis, the main absorption resonance at E22 shows sidebands attributed to phonon assisted absorption. Sidebands to E11 have a diameter dependent energy and are assigned to excited excitonic states. Along with longitudinal excitations, severa...

Microwave purification of large-area horizontally aligned arrays of single-walled carbon nanotubes.

Recent progress in the field of single-walled carbon nanotubes (SWNTs) significantly enhances the potential for practical use of this remarkable class of material in advanced electronic and sensor devices. One of the most daunting challenges is in creating large-area, perfectly aligned arrays of purely semiconducting SWNTs (s-SWNTs). Here we introduce a simple, scalable, large-area scheme that ...