Shockley Diode Equation — the NEET Physics formula with its derivation, variables, validity constraints and worked solver.
Shockley Diode Equation Describes the current-voltage (I-V) characteristic of a semiconductor diode under forward and reverse bias conditions. The current is modeled based on the concentration of minority carriers generated by the applied voltage. The equation incorporates the reverse saturation current (I 0), which limits current in reverse bias. The exponential term describes the rapid increase in current as the applied voltage approaches the cut-in voltage. The thermal voltage (V T) scales the voltage dependence, linking the electrical behavior to temperature. The applied voltage V must be measured relative to the diode's built-in potential. The thermal voltage V T depends on absolute temperature T. Assuming the diode behaves linearly (it is highly non-linear). Confusing the thermal voltage V T with the diode's cut-in voltage (V k). Ignoring the temperature dependence of the saturation current (I 0) and V T.