The term, kT/q , appears often in semiconductor devicemodels.

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

Some useful information: k is known as Boltzmann’s constant andis 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 thesecond 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 theunits of Kelvin , we need to convert temperature into units ofKelvin. To find the temperature in Kelvin from Celsius, add 273.15to the temperature in Celsius.

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