What substrate thickness and the value of work function in the case of GaN HEMT should I take for the research paper attached?

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Muhammad Hamza El-Saba

Dear Tanvika,

There exist 2 famous examples of GaAs and GaN HEMT devices on Silvaco Examples. Just jet a look at the input file and compare it with your paper example

Tanvika Garg

Thankyou for replying Muhammad Hamza El-Saba Sir

Touati Zineeddine

for substrate thickness The author did not mention it

But it must be greater than Tbuff (greater than 2um) to avoid wasting charge

the value of work function is 3.4 for the gate

Thankyou so much Touati Zineeddine Sir