Highly Sensitive NH3 Detection Based on Organic Field-Effect Transistors with Tris(pentafluorophenyl)borane as Receptor

Details

• Personal Author:
  Besar K ; Breysse PN ; Huang W ; Katz HE ; LeCover R ; Rule AM
• Description:
  We have increased organic field-effect transistor (OFET) NH3 response using tris(pentafluorophenyl)borane (TPFB) as a receptor. OFETs with this additive could detect concentrations of 450 ppb v/v, with a limit of detection of 350 ppb, the highest sensitivity reported to date for semiconductor films; in comparison, when triphenylmethane (TPM) or triphenylborane (TFB) was used as an additive, no obvious improvement in the sensitivity was observed. These OFETs also showed considerable selectivity with respect to common organic vapors and stability toward storage. Furthermore, excellent memory of exposure was achieved by keeping the exposed devices in a sealed container stored at -30 degrees C, the first such capability demonstrated with OFETs. [Description provided by NIOSH]
• Subjects:
  Electrical Equipment And Supplies Occupational Health Safety Semiconductors Volatilization
• Keywords:
  Ammonia Electronic Equipment Gas Detectors Sensors Vapor Detectors
• ISSN:
  0002-7863
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Maryland ; OSHA Region 3
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  134
• Issue:
  36
• NIOSHTIC Number:
  nn:20053195
• Citation:
  J Am Chem Soc 2012 Sep; 134(36):14650-14653
• Contact Point Address:
  H.E. Katz, Department of Materials Science and Engineering, Johns Hopkins University, 206 Maryland Hall, 3400 North Charles Street, Baltimore, Maryland 21218, United States
• Email:
  hekatz@jhu.edu
• CAS Registry Number:
  Ammonia (CAS RN 7664-41-7)
• Federal Fiscal Year:
  2012
• Performing Organization:
  Johns Hopkins University, Baltimore, Maryland
• Peer Reviewed:
  True
• Start Date:
  20120701
• Source Full Name:
  Journal of the American Chemical Society
• End Date:
  20150630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f936e56f7b66848a12df6e7ed8be0e247744a50e3c255d8478a94f4c8777ae18c5c2d79dd90b5c1be5fab981533777070ed1b79f98acb76f812d0bc935553870
• Download URL:
  https://stacks.cdc.gov/view/cdc/216003/cdc_216003_DS1.pdf
• File Type:
  [PDF - 1000.40 KB ]