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rasmita sahoo

why I~vds curve shows higher saturation current for longer channel length?

I was simulating for CNTFETs with different channel length.I had taken a (10,0) CNT.I tried to plot I~vds curve for channel lengths 10nm,15nm and 30nm.saturation current for 10nm is coming higher than that for 15nm but saturation current for 30nm is coming higher than the first two.as channel length is increasing the saturation current should decrease but i am not getting why it is increasing.please explain.

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    Shaikh S. Ahmed

    What were your gate contact lengths (not the channel lengths) for these three structures?

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