6_Resonant Tunneling Diodes 3080 Jonathan Gorlin

6_Resonant Tunneling Diodes 3080 Jonathan Gorlin - RESONANT...

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RESONANT TUNNELING DIODES Jonathan Gorlin ECE 3080 – Semiconductor Devices
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Overview Introduction Device Operation Performance Applications Conclusion
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Introduction Tunnel Diodes Very fast switching for low power, high frequency applications Numerous Variations Esaki Diodes Resonant Tunnel Diodes Si/Si-Ge Resonant Interband Tunnel Diodes Planar Tunnel Diodes Vertical Silicon Tunnel Diodes ACP Tunnel Diodes
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Tunnel Diode Operation Based on the QM principle of tunneling In forward bias, electrons tunnel through narrow barrier Further biasing leads to negative resistance region Traditional TD have a very high leakage current in reverse bias Thin depletion region causes high capacitance
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Tunnel Diode IV Characteristics
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Resonant Tunneling At certain energies, the transmission coefficient is 1 as if no barriers present Transparency only due to resonance at certain quasi states The bias allows alignment of emitter with resonant states
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6_Resonant Tunneling Diodes 3080 Jonathan Gorlin - RESONANT...

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