SiC diode: History, Characteristics & Temperature Effects

[rottenmango]

Hi all,

Can anyone brief some history and the Characteristics of SiC diode.
I having difficulties to find the infomation about the SiC material.
Beside that, how the Temparature related with the I-V curve (Eg: 200k, room temp,600k)
and different between the Si and SiC at room temp?

Thx.

 

[berkeman]

Hi all,

Can anyone brief some history and the Characteristics of SiC diode.
I having difficulties to find the infomation about the SiC material.
Beside that, how the Temparature related with the I-V curve (Eg: 200k, room temp,600k)
and different between the Si and SiC at room temp?

Thx.

Welcome to the PF. Just googling SiC diode gives lots of hits:

http://www.google.com/search?source...ie=UTF-8&rlz=1T4GGLL_enUS301US302&q=SiC+diode

Does the info in those hits not help?

 

[rottenmango]

Welcome to the PF. Just googling SiC diode gives lots of hits:

http://www.google.com/search?source...ie=UTF-8&rlz=1T4GGLL_enUS301US302&q=SiC+diode

Does the info in those hits not help?

I still can't differentiate the SiC, Si and schottky diode.

 

[berkeman]

I still can't differentiate the SiC, Si and schottky diode.

Sorry to keep using Google searches to try to help, but I googled your phrase differentiate the SiC, Si and schottky diode, and the 3rd hit from wikipedia looks like it should at least help a bit:

http://www.google.com/search?source...=differentiate+the+SiC,+Si+and+schottky+diode

.

 

[Mike_In_Plano]

The following article was decent:
http://www.cree.com/products/pdf/Power_Article_2.pdf
most of the articles were geared strictly towards advertisement, but I found a little discussion about the properties of the parts.

From what I gather, they are a true Schottky device, but the semiconductor isn't pure silicon. It's Silicon and carbon, just as SiGe is Silicon and germanium.

I've seen these devices used in compact, high-effeciency power factor correction circuits, which makes sense from the description, but I've never seen them used as output rectifiers. I think it's the combination of high voltage + great reverse recovery that makes them special. For low voltages, the ultrafast rectifiers begin to good recovery behavior, and then there's also Schottky's and platinum schottkys. Both are entrenched at low voltage and generally work great.