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General Questions and Answers / Re: Is there a fundamental physical limit for the On/Off ratio of a transistor?
« on: May 12, 2019, 11:00 »
May I say, that the limit of ON/OFF is infinite ?
In principle, the off current can be as small as close to zero, which makes ON/OFF approach infinite.
For example, in graphene (as in the figure), which has a zero gap, ON/OFF ratio can be described as
(V_ON / V_OFF)^2, when V_OFF is near the Dirac point, which has zero electronic density of states.
Then it is reasonable to have a large ON/OFF ratio. Right?
Please comment.
In principle, the off current can be as small as close to zero, which makes ON/OFF approach infinite.
For example, in graphene (as in the figure), which has a zero gap, ON/OFF ratio can be described as
(V_ON / V_OFF)^2, when V_OFF is near the Dirac point, which has zero electronic density of states.
Then it is reasonable to have a large ON/OFF ratio. Right?
Please comment.