8 September 2011 Photovoltaic and photoconductive effects in different individual single-walled carbon-nanotube-based devices
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Abstract
In this paper, photovoltaic and photoconductive responses were observed respectively in different individual single-walled carbon nanotube based devices of similar device configurations. Under IR lamp illumination in vacuum, photocurrent at zero voltage bias was found in one device while resistance change instead of photovoltaic effects was observed in the other device. The photocurrent was found to decrease as the temperature decreased from room temperature to 78K; on the contrary, the photoconductive effect was enhanced as the temperature decreased. Schottky barriers are suggested to be asymmetric for the photovoltaic device while symmetric for the photoconductive device. The barrier heights of the photovoltaic device were also calculated based on hot electron emission mode of Schottky barrier.
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Yuxiu Zhou, Tie Li, Yuelin Wang, "Photovoltaic and photoconductive effects in different individual single-walled carbon-nanotube-based devices", Proc. SPIE 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, 819117 (8 September 2011); doi: 10.1117/12.900528; https://doi.org/10.1117/12.900528
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