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• Kaneko, T
• Hatakeyama, R
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Sensors 2013, 13(1), 966-974; doi:10.3390/s130100966

Article

C₅₉N Peapods Sensing the Temperature

Yongfeng Li ^1,2,* , Toshiro Kaneko ² and Rikizo Hatakeyama ^2,*

¹ State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Changping District, Beijing 102249, China ² Department of Electronic Engineering, Tohoku University, Sendai 980-8579, Japan

* Authors to whom correspondence should be addressed.

Received: 29 November 2012; in revised form: 5 January 2013 / Accepted: 14 January 2013 / Published: 15 January 2013

(This article belongs to the Special Issue Nanotube and Nanowire Sensors)

Download PDF Full-Text [576 KB, uploaded 15 January 2013 09:06 CET]

Abstract: We report the novel photoresponse of nanodevices made from azafullerene (C₅₉N)-encapsulated single-walled carbon nanotubes (C₅₉N@SWNTs), so called peapods. The photoconducting properties of a C₅₉N@SWNT are measured over a temperature range of 10 to 300 K under a field-effect transistor configuration. It is found that the photosensitivity of C₅₉N@SWNTs depends very sensitively on the temperature, making them an attractive candidate as a component of nanothermometers covering a wide temperature range. Our results indicate that it is possible to read the temperature by monitoring the optoelectronics signal of C₅₉N@SWNTs. In particular, sensing low temperatures would become more convenient and easy by giving a simple light pulse.

Keywords: azafullerenes; carbon nanotubes; encapsulation; photoresponse

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