التفاصيل البيبلوغرافية
| العنوان: |
Photothermoelectric response in asymmetric carbon nanotube devices exposed to sub-terahertz radiation. |
| المؤلفون: |
Fedorov, G., Kardakova, A., Gayduchenko, I., Charayev, I., Voronov, B. M., Finkel, M., Klapwijk, T. M., Morozov, S., Presniakov, M., Bobrinetskiy, I., Ibragimov, R., Goltsman, G. |
| المصدر: |
Applied Physics Letters; 10/28/2013, Vol. 103 Issue 18, p181121, 5p, 3 Graphs |
| مصطلحات موضوعية: |
THERMOELECTRICITY, CARBON nanotubes, VAN der Waals forces, SUBMILLIMETER waves, SILICON oxide |
| مستخلص: |
We report on the voltage response of carbon nanotube devices to sub-terahertz (THz) radiation. The devices contain carbon nanotubes (CNTs), which are over their length partially suspended and partially Van der Waals bonded to a SiO2 substrate, causing a difference in thermal contact. We observe a DC voltage upon exposure to 140 GHz radiation. Based on the observed gate voltage and power dependence, at different temperatures, we argue that the observed signal is both thermal and photovoltaic. The room temperature responsivity in the microwave to THz range exceeds that of CNT based devices reported before. [ABSTRACT FROM AUTHOR] |
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