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rajesh13
Joined: 07 Jul 2004
Posts: 126
Location: Milky Way
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 04 Aug 2004 11:49 what is Dielectric breakdown |
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What are the different ways in which a dielectric can brek down. Is dV/dt is one of the reason for the breakdown of Gate dielectric oxide. 
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eblue
Joined: 03 Aug 2004
Posts: 28
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| 04 Aug 2004 12:28 Re: what is Dielectric breakdown |
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This is very interesting question. I think there are some reversable dielectic break down condensators.
dV/dt is not the main reason. It is the maximal voltage value and duration of it.
eblue
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Hughes
Joined: 10 Jun 2003
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| 05 Aug 2004 2:03 what is Dielectric breakdown |
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| It is not dV/dt, but dV/dx, or electric field.
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rajesh13
Joined: 07 Jul 2004
Posts: 126
Location: Milky Way
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| 06 Aug 2004 7:05 Re: what is Dielectric breakdown |
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| Hughes wrote: |
| It is not dV/dt, but dV/dx, or electric field. |
No, It is dV/dt. I am refering to transient dielectric breakdown phenomenon.
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ptoo30
Joined: 07 Apr 2002
Posts: 57
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| 06 Aug 2004 12:50 Re: what is Dielectric breakdown |
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| its reliability issue. the fowler nordheim current pull the moving ion in sio2. and trap the ion. it causes current path in sio2. so voltage stressed to sio2 and time are some function of breakdown of gate oxide.
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rajesh13
Joined: 07 Jul 2004
Posts: 126
Location: Milky Way
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| 06 Aug 2004 12:55 Re: what is Dielectric breakdown |
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| ptoo30 wrote: |
| its reliability issue. the fowler nordheim current pull the moving ion in sio2. and trap the ion. it causes current path in sio2. so voltage stressed to sio2 and time are some function of breakdown of gate oxide. |
could you elaborate some more about fowler nordheim current. What does it mean. So after the trapping of some ions, will the dielectric will start conducting current.
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