How can you make Ohmic contact with NiSi in semiconductors?

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Ohmic contact is achieved when a semiconductor's work function is lower than that of the metal, but nickel silicide (NiSi) has a higher work function than nickel (Ni). The discussion focuses on how NiSi can still function as an ohmic contact despite this difference. The use of NiSi in ohmic contacts is preferred due to its improved electrical properties and stability in semiconductor applications. Participants seek further reading on the topic to understand the mechanisms behind NiSi's behavior compared to Ni. Understanding these differences is crucial for optimizing semiconductor device performance.
wasong
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How NiSi is ohmic contact?
How NiSi is ohmic contact?
Ohm contact occurs when a semiconductor has a lower work function than a metal, doesn't it? NiSi has a larger work function than Ni, so how do you make ohm contact?
 
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Can you post some links to the reading that you have been doing about this? Why do you want to use Ni in an Ohmic contact with a semiconductor? What is the application?
 
berkeman said:
Can you post some links to the reading that you have been doing about this? Why do you want to use Ni in an Ohmic contact with a semiconductor? What is the application?
I'm not trying to use nickel for Ohm contact. Nickel silicide is used for ohmic contact differently from nickel, so we just want to know what difference NiSi becomes ohmic contact differently from Ni.
 

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