Numerical analysis of multiplication layer on dark current for InGaAs/InP single photon avalanche diodes
The dark current of Separate Absorption Grading Charge Multiplication InP/InGaAs avalanche photodiodes(APDs) has been numerically analyzed. Effects of doping concentration, carrier lifetime and trap concentration of multiplication depletion layer on the dark current have been studied. The results indicated that the dark current of InP/InGaAs APDs strongly depended on the carrier lifetime, which was influenced by the doping and trap concentration. These characteristics can be used to analyze some problems in the device fabrication.
dark current ingaas/inp single photon avalanche diodes numerical simulation