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Article: Research results from M. Steiner and co-authors update knowledge of nanotechnology.
- Article from:
- Nanotechnology Weekly
- Article date:
- November 9, 2009
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"We investigate the gate field dependence of light absorption and emission of an individual, suspended semiconducting carbon nanotube using Raman and photoluminescence spectroscopies. We find a strong reduction in the absorption strength and a red shift of the E-33 state of the nanotube with increasing gate field," investigators in the United States report.
"The photoluminescence from the E-11 state Is quenched even stronger. We explain these observations in terms of field-doping and its effects on both the radiative and nonradiative decay rates of the excitons," wrote M. Steiner and colleagues.
The researchers concluded: "Thus, gate field-induced doping ...