title: Bolometric-Effect-Based Wavelength-Selective Photodetectors Using Sorted Single Chirality Carbon Nanotubes.
abstract: This paper exploits the chirality-dependent optical properties of single-wall carbon nanotubes for applications in wavelength-selective photodetectors. We demonstrate that thin-film transistors made with networks of carbon nanotubes work effectively as light sensors under laser illumination. Such photoresponse was attributed to photothermal effect instead of photogenerated carriers and the conclusion is further supported by temperature measurements. Additionally, by using different types of carbon nanotubes, including a single chirality (9,8) nanotube, the devices exhibit wavelength-selective response, which coincides well with the absorption spectra of the corresponding carbon nanotubes. This is one of the first reports of controllable and wavelength-selective bolometric photoresponse in macroscale assemblies of chirality-sorted carbon nanotubes. The results presented here provide a viable route for achieving bolometric-effect-based photodetectors with programmable response spanning from visible to near-infrared by using carbon nanotubes with pre-selected chiralities.
authors.affiliation: Department of Electrical &Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: Suoming
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Department of Electrical &Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: Le
authors.initials: L
authors.lastname: Cai
authors.affiliation: Department of Electrical &Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: Tongyu
authors.initials: T
authors.lastname: Wang
authors.affiliation: School of Chemical and Biomolecular Engineering, Nanyang Technological University, Singapore 637459.
authors.forename: Rongmei
authors.initials: R
authors.lastname: Shi
authors.affiliation: Department of Electrical &Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: Jinshui
authors.initials: J
authors.lastname: Miao
authors.affiliation: School of Chemical and Biomolecular Engineering, Nanyang Technological University, Singapore 637459.
authors.forename: Li
authors.initials: L
authors.lastname: Wei
authors.affiliation: School of Chemical and Biomolecular Engineering, Nanyang Technological University, Singapore 637459.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Electrical &Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: Nelson
authors.initials: N
authors.lastname: Sepúlveda
authors.affiliation: Department of Electrical &Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: Chuan
authors.initials: C
authors.lastname: Wang