CUED Publications database

Photovoltaic measurements in carbon nanotube - Amorphous silicon core/shell nanowire

Zhou, H and Lentaris, G and Hiralal, P and Butler, T and Unalan, E and Amaratunga, G and Colli, A (2012) Photovoltaic measurements in carbon nanotube - Amorphous silicon core/shell nanowire. Conference Record of the IEEE Photovoltaic Specialists Conference. pp. 1944-1947. ISSN 0160-8371

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Abstract

Carbon nanotube is one of the promising materials for exploring new concepts in solar energy conversion and photon detection. Here, we report the first experimental realization of a single core/shell nanowire photovoltaic device (2-4μm) based on carbon nanotube and amorphous silicon. Specifically, a multi-walled carbon nanotube (MWNTs) was utilized as the metallic core, on which n-type and intrinsic amorphous silicon layers were coated. A Schottky junction was formed by sputtering a transparent conducting indium-tin-oxide layer to wrap the outer shell of the device. The single coaxial nanowire device showed typical diode ratifying properties with turn-on voltage around 1V and a rectification ratio of 104 when biased at ±2V. Under illumination, it gave an open circuit voltage of ∼0.26V. Our study has shown a simple and useful platform for gaining insight into nanowire charge transport and collection properties. Fundamental studies of such nanowire device are important for improving the efficiency of future nanowire solar cells or photo detectors. © 2012 IEEE.

Item Type: Article
Uncontrolled Keywords: Carbon Nanotube Core/Shell Structure Nanowire Photodiode
Subjects: UNSPECIFIED
Divisions: Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:09
Last Modified: 08 Dec 2014 02:33
DOI: 10.1109/PVSC.2012.6317976