Theoretical study of back-to-back avalanche photodiodes for mid- and longwave infrared applications

This The dual-band $\mathrm{N}^{+}-\mathrm{p}-\mathrm{p}-\mathrm{p}-\mathrm{P}^{+}-\mathrm{p}-\mathrm{p}-\mathrm{p}-\mathrm{n}^{+}$ avalanche photodiode (APDs) structure is designed and numerically analyzed in detail. We conducted a theoretical study of APD for medium wave (MWIR) and longwave infrared (LWIR) applications. The current-voltage (I-V) characteristics for the bias range -6V