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sivacharan Junior Member Offline Posts: 19	RSCE Jan 10^th, 2007, 11:14pm Can any one explain simply the physics behind the Reverse Short Channel Effect?? Thanks.
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Geoffrey_Coram Senior Fellow Offline Posts: 1999 Massachusetts, USA	Re: RSCE Reply #1 - Jan 11^th, 2007, 11:45am Same question came up in this thread: http://www.designers-guide.org/Forum/YaBB.pl?num=1164621927
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mc66 New Member Offline Posts: 6	Re: RSCE Reply #2 - Jan 13^th, 2007, 3:22am it's because halo implant,which is use to prevent punch through when L decrease,and before SCE take effect,the halo implant will make the effect doping of sub rise,so vt rise
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Croaker

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Re: RSCE
Reply #3 - Jan 15^th, 2007, 4:40pm

mc66 wrote on Jan 13^th, 2007, 3:22am:

it's because halo implant,which is use to prevent punch through

when L decrease,and before SCE take effect,the halo implant will make the effect doping of sub rise,so vt rise

Perhaps I can clarify...and see if I understand...

There is a p-type halo implant around the s/d. This high p-doping decreases the width of the depletion region, thus making it harder for the depletion regions of the s/d to touch, which is important when the channel is short.

For long-channel devices, the halo implant is a pretty insignificant portion of the p-type substrate doping. As the channel shrinks, more of the channel consists of this high p implant, and thus the threshold voltage increases (the charge concentration is higher).

Makes sense to me.

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mc66 New Member Offline Posts: 6	Re: RSCE Reply #4 - Jan 17^th, 2007, 4:42am Croaker wrote on Jan 15^th, 2007, 4:40pm: Perhaps I can clarify...and see if I understand... .............................................................. Makes sense to me. you are right,and express clearly.i'm chinese,so express something use english is difficult to me
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Croaker Senior Member Offline Posts: 235	Re: RSCE Reply #5 - Jan 17^th, 2007, 6:30am No problem.
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