Holey single-walled carbon nanotubes for ultra-fast broadband bolometers. Issue 39 (28th September 2018)

• Record Type: Journal Article
• Authors: Kopylova, Daria S.; Fedorov, Fedor S.; Alekseeva, Alena A.; Gilshteyn, Evgenia P.; Tsapenko, Alexey P.; Bubis, Anton V.; Grebenko, Artem K.; Popov, Zakhar I.; Sorokin, Pavel B.; Gladush, Yuriy G.; Anisimov, Anton S.; Nasibulin, Albert G.
• Is Part Of: Nanoscale. Volume 10:Issue 39(2018)
• Page Start: 18665
• Page End: 18671
• Publication Date: 2018-09-28
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr05925j
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A holey carbon nanotube network is designed to improve the performance of bolometers. The material possesses a temperature coefficient of resistance up to −2.8% K −1 . Abstract : Although carbon nanotubes have already been demonstrated to be a promising material for bolometric photodetectors, enhancing sensitivity while maintaining the speed of operation remains a great challenge. Here, we present a holey carbon nanotube network, designed to improve the temperature coefficient of resistance for highly sensitive ultra-fast broadband bolometers. Treatment of carbon nanotube films with low-frequency oxygen plasma allows fine tuning of the electronic properties of the material. The temperature coefficient of resistance of our films is much greater than the reported values for pristine carbon nanotubes, up to −2.8% K −1 at liquid nitrogen temperature. The bolometer prototypes made from the treated films demonstrate high sensitivity over a wide IR range, a short response time, smooth spectral characteristics and a low noise level.