7.2 P Rtd

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7.2 P Rtd

  1. 1. Tunnel in quantum wells Barriera doppia Barriera singola Compaiono risonanze con livelli di sottobanda
  2. 2. Resonant Tunneling Diode (RTD)
  3. 3. Curve caratteristiche I-V Il massimo nella curva I-V si ha quando gli elettroni incidenti hanno la stessa energia della sottobanda: tunneling risonante fra source e drain RTD utile per operazioni veloci (fino a 100 GHz) e consumo limitato
  4. 4. Tipiche strutture RTD
  5. 5. Resonant Tunneling Diode (RTD) High speed Negative differential resistance Bi/multistabile Temperature insensitive Radiation tolerant
  6. 6. Resonant Tunneling Diode – curve i-v teoriche Unbiased: Under bias: Curve i-v ideali per questa struttura, EF e E < E1:
  7. 7. Resonant Tunneling Diode – curve i-v teoriche
  8. 8. Resonant tunneling diodes - esempio InGaAs/AlAs/InAs su InP:

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