Impulse Response of Partially Depleted p-i-n Photodiode

Abstract

Impulse response of partially depleted p-i-n photodiode is calculated by means of a mathematical analysis based on the solution of continuity equations together with the Poisson's equation. The problem is solved by a proper iterative procedure. Photodiode response is computed for step “switch-off” of photon flux using various p-i-n diode configurations with various applied reverse bias and various incident light wave-lengths. The strong wavelength dependence of current responses is obtained. The agreement between calculated and experimental data is good.

Indexing terms:

• Photodiode
• Impulse response