High Performance Multiwall Carbon Nanotube Bolometers

Abstract

High infrared bolometric photoresponse has been observed in multiwall carbon nanotube (MWCNT) films at room temperature. The observed detectivity D* in exceeding 3.3 x 1000000 cm Hz1/2 /W on MWCNT film bolometers is a factor of 7 higher than that obtained on the single-wall CNT (SWCNT) counterparts. The response time of about 1 2 ms on MWCNT bolometers is more than an order of magnitude shorter than that of SWCNT bolometers. The observed high performance may be attributed to the naturally suspended inner-shell structure in a MWCNT, which enhances photon absorption and restricts bolometer external thermal link to environment.

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Document Details

Document Type
Technical Report
Publication Date
Oct 21, 2010
Accession Number
ADA595963

Entities

People

  • F. J. Baca
  • Jack J. Shi
  • Judy Z. Wu
  • Rongtao Lu

Organizations

  • University of Kansas

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Band Gaps
  • Carbon Nanotubes
  • Conduction (Heat Transfer)
  • Detection
  • Detectors
  • Electron Beam Lithography
  • Electron Microscopy
  • Energy Bands
  • Frequency
  • Fullerenes
  • Heat Energy
  • Infrared Detectors
  • Lepidoptera
  • Nanotechnology
  • Physics
  • Radiation
  • Specific Heat

Fields of Study

  • Physics

Readers

  • Nanocomposite Materials Science
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Superconducting Magnet Technology