Photovoltaic effect in single carbon nanotube-based Schottky diodes
by Jiangbo Zhang, Ning Xi, Hongzhi Chen, King W. C. Lai, Guangyong Li, Uchechukwu Wejinya
International Journal of Nanoparticles (IJNP), Vol. 1, No. 2, 2008

Abstract: Photovoltaic effects in individual single-walled carbon nanotube (SWCNT) based Schottky diodes were investigated for infrared detection in this paper. Different contact conditions (symmetric and asymmetric CNT-metal contacts) have been studied for optimising the performance of SWCNT-based infrared detector. Experiments demonstrated that the asymmetric structure could improve the photodiode performance by increasing the signal-to-dark current ratio up to two orders of magnitude higher than a symmetric device. With the perfect photodiode I-V characteristic curves, SWCNTs show a strong potential of applications in solar collection, infrared sensing and nanogenerators.

Online publication date: Thu, 11-Sep-2008

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