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Wrapping Cytochrome C Around Single-Wall Carbon Nanotube: Engineered Nanohybrid Building Blocks for Infrared Detection at High Quantum Efficiency

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Journal Article - Open Access

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University of Kansas Lawrence United States

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Biomolecule cytochrome c Cty c, a small molecule of a chain of amino acids with extraordinary electron transport, was helically wrapped around a semiconductive single-wall carbon nanotube s-SWCNT to form a molecular building block for uncooled infrared detection with two uniquely designed functionalities exciton dissociation to free charge carriers at the heterojunction formed on the s-SWCNTCty c interface and charge transport along the electron conducting chain of Cty c acceptor and hole conducting channel through s-SWCNT donor. Such a design aims at addressing the long-standing challenges in exciton dissociation and charge transport in an SWCNT network, which have bottlenecked development of photonic SWCNT-based infrared detectors. Using these building blocks, uncooled s-SWCNTCyt c thin film infrared detectors were synthesized and shown to have extraordinary photoresponsivity up to 0.77 A W1 due to a high external quantum efficiency EQE in exceeding 90, which represents a more than two orders of magnitude enhancement than the best previously reported on CNT-based infrared detectors with EQE of only 1.72. From abroad perspective, this work on novel s-SWCNTCyt c nanohybrid infrared detectors has developed a successful platform of engineered carbon nanotubebiomolecule building blocks with superior properties for optoelectronic applications.

Subject Categories:

  • Quantum Theory and Relativity
  • Refractory Fibers

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