Molecular photoeffect in single- and multi-wall carbon nanotubes with physisorbed oxygen molecules
| Autor: | I.I. Geru |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics General Physics and Astronomy Resonance 02 engineering and technology Carbon nanotube Photoelectric effect 021001 nanoscience & nanotechnology 01 natural sciences Spectral line law.invention Optical properties of carbon nanotubes law 0103 physical sciences Molecule Atomic physics 0210 nano-technology Electron paramagnetic resonance Ground state |
| Zdroj: | Physics Letters A. 381:4019-4022 |
| ISSN: | 0375-9601 |
| DOI: | 10.1016/j.physleta.2017.10.041 |
| Popis: | The EPR spectra of high purity single-walled and multi-walled semiconducting carbon nanotubes exhibit wide resonance lines (154 ± 5 mT and 159 ± 5 mT, respectively, at room temperature). The broadening of EPR lines is due to magnetic dipole-dipole interaction with the spin-triplet ground state oxygen molecules physisorbed on the carbon nanotubes surface. Here we show that the emission of O 2 molecules occurs under the photons with energy of 2.33 eV that leads to narrowing of the EPR line. The number of molecules emitted from nanotubes is proportional to the flux of incident radiation, in full analogy with the first law of the classical photoelectric effect. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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