期刊
NANO LETTERS
卷 11, 期 2, 页码 609-613出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl1036947
关键词
Carbon nanotubes; thermopile; thermal detector; opto-electronic; photovoltage; thermoelectric effect
类别
资金
- Canada Research Chair (CRC)
- NSERC
- FQRNT
We designed a thermopile based on a PN doping profile engineered in a suspended film of single-walled carbon nanotubes (SWNTs). Using estimates of the film local Seebeck coefficients, the SWNT thermopile was optimized in situ through depositions of potassium dopants. The overall performances of the thermopile were found to be comparable, to state-of-the-art SWNT bolometers. The device is characterized at room temperature by a, time response of 36 ms, typical of thermal detectors, and an Optimum spectral detectivity of 2 x 10(6) cm Hz(1/2)/W in the visible and near-infrared. This paper presents the first thermopile made of a suspended SWNT film and paves the way to new applications such as broadband light (including THz) detection and thermoelectric power generation.
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