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Gas sensors

  1. Jan 12, 2012 #1
    hi.. plz tell me that
    1) why some materials like ZnO, SnO, Pt, etc r sensitive to gases and others like Si, Ge,
    InP, GaAs, etc r not sensitive to gases.
    2) how doping increase the sensitivity of a certain material to certain gases.
     
  2. jcsd
  3. Jan 14, 2012 #2

    drizzle

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    Gold Member

    Hello mhabib,
    Search for this paper:

    'Metal Oxide Gas Sensors: Sensitivity and Influencing Factors'

    Read it, it'll help you :)
     
  4. Jan 18, 2012 #3
    thanks drizzle, it gives me a lot.
     
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