We perform PL measurements for the CNTs supported by anthracene crystals over the pits (Fig. 1j). Figure 3b shows a typical PLE map of a CNT on anthracene, peaking as sharply as the...

2016年2月12日 · Here, we propose a novel type of ionic sensor complex for detecting CNTs – an organic dye that responds sensitively and selectively to CNTs with a photoluminescent signal. The complexes are formed...

2023年12月9日 · PL excitation images are taken by using a three-dimensional motorized stage to scan the CNT/WSe 2 samples in our confocal microscopy system. A PL spectrum is collected at each position, and...

Carbon nanotubes are unique "one-dimensional" materials, whose hollow fibers (tubes) have a unique and highly ordered atomic and electronic structure, and can be made in a wide range of dimension. The diameter typically varies from 0.4 to 40 nm (i.e., a range of ~100 times).

2017年3月20日 · Single-walled carbon nanotubes (CNTs) 1, 2, which emit near-infrared (NIR) fluorescence in the long wavelength region (1100–1400 nm: NIR-II) 3, have been expected to...

The PL quantum yield (PLQY) of 2 SWNT species is ∼5 × 10-4, and probably this is lower than the true value due to quenching of the PL in bundles by metallic tubes. Time-resolved PL measurements reveal a dominant, luminescence lifetime component of 130 ps that, when combined with a predicted natural radiative lifetime of ∼20 ns, suggests ...

2018年8月1日 · Semiconducting single-walled carbon nanotubes (s-SWCNTs) exhibit unique photoluminescence (PL) and electroluminescence (EL) properties, which suggests the promising potential of SWCNT being prior optically active candidate materials for next generation on-chip photonic and optoelectronic applications, and thus of SWCNT-based nano-emitters.

Figure 2a shows typical PL spectra from a transferred CNT with a total length of ~50 μm, which are measured at an air-suspended region over a 5-μm-wide trench (red) and at an on-substrate...

The band-gap of semiconducting CNTs has been determined by recent reports of photoluminescence (PL). 4–6 In this paper, we present CNTs that reveal a semiconducting property with PL and...

2018年1月1日 · The PL measurements are based on bulk characterization of CNTs, and allow differentiation between the semiconducting CNT, based on their band gap energy levels that relate to their chirality and is also inversely correlated to CNT diameters. The PL phenomenon is based on that fact that van Hove singularities are observed in the DOS of CNTs ...