The term, kT/q , appears often in semiconductor device models

The term, kT/q , appears often in semiconductor device models.

a) Find the value of kT /q at a ‘room temperature’ of 80F.

Some useful information: k is known as Boltzmann’s constant and is equal to k = 1.381×10^−23 Joule/ Kelvin = 8.617 ×10^−5 eV /Kelvin . To compute kT /q we divide kT by q = e , hence we use the second form of the Boltzmann constant, k = 8.617 ×10^−5 eV /Kelvin . Note that q = e cancels the e in the units of eV . To cancel the units of Kelvin , we need to convert temperature into units of Kelvin. To find the temperature in Kelvin from Celsius, add 273.15 to the temperature in Celsius.

b) Find the value of kT/ q at the boiling point of water.