The Richardson constant is expressed by

A* = 4 pi q m* k^2/h^3,

All what do you need is to search for m* of indium oxide and the the values of the physical constant and then you can calculate the Richardson constant.

The value for A= 120 A/cm^2 K^2 for m*=m0

For the derivation of the Richardson constant please refer to the book in the link: Book Electronic Devices

Best wishes

Dear Indra,

please see in the first link:   equation 2 and the sentence above and below.

Result of that equation: A* ~ 36 A K-2 cm-2

And:

 „A* (= 36 A K-2 cm-2) is the Richardson’s constant of n-type In2O3“   is from the second link ( first sentence below equation 3).

Good luck

https://www.ecse.rpi.edu/homepages/ssawyer/Publications/By%20Date/2012/Qin_Dutta_Sawyer-2012-SemiconductorScienceandTech-In2O3milledVLS.pdf

http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=2397&context=nanopub

Richardson's constant for indium oxide, „A* = 36 A K^-2 cm^-2

Dear Adebayo,

where do you get the number from?

In general when using such number in a paper / thesis or other document one has to provide a reference.  Indra should at least know the reference.

Thanks in advance.

Thank you