henRJ

I'm attempting to solve an electrical engineering problem. The question was to find the values of xd, xa, rs and gd in a p-n junction, as such I have completed the first three parts and am now struggling to find the value of the the last part due to my calculator stating a math error when imputing the values into the equation i'm using. The value of gd is found using the equation gd = I/ nkT and the only value i'm missing is the value for I which when I input i receive my error. With all the correct values inserted, i have put this equation into my calculator. I = 10-8 * ( e(0.5/1.4*1.38x10^-23*300 -1). Any help would be greatly appreciated, thank you.