The evaluation of a pyroelectric detector with a carbon multi-walled nanotube coating in the infrared

نویسنده

  • E. Theocharous
چکیده

The performance of a pyroelectric detector with a carbon multi-walled nanotube coating was evaluated in the 0.9 μm to 14 μm wavelength range. The relative spectral responsivity of this detector was shown to be flat over most of the wavelength range examined and the spectral flatness was shown to be comparable to the best infrared black coatings currently available. The performance of the detector (in terms of NEP and D*) was limited by the very thick (250 μm thick) LiNbO3 pyroelectric crystal on which the coating was deposited. The responsivity of this detector was shown to be linear in the 0.06 mW to 2.8 mW radiant power range and its spatial uniformity was similar to other pyroelectric detectors utilising different types of black coatings. The carbon nanotube coatings were reported to be much more durable than other infrared black coatings commonly used to coat thermal detectors in the infrared, such as metal-blacks. This, in combination with its excellent spectral flatness demonstrated by this paper suggests that carbon nanotube coatings appears extremely promising for thermal detection applications in the infrared

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تاریخ انتشار 2005