Storage life evaluation of photodetector based on multi-parameter performance degradation and competitive failure
ZHANG Yeping
YANG Tongbo
LI Ziwei
Abstract：Aiming at the storage life evaluation of photodetectors,a new evaluation method for multi-parameter competitive failure storage life assessment based on Monte-Carlo method was proposed.This method comprehensively considered whether the key performance parameters of the sample have deteriorated or improved trend.Firstly,the optimal degradation model with a single parameter was selected by performance degradation modeling,so that the pseudo-life of the sample with increasing degradation trend was calculated according to the failure threshold,and the pseudo-life was regarded as the right-censored data for the sample with decreasing degradation trend.Furthermore,the optimal distribution of a single performance parameter was selected based on the pseudo-life data combined with the expectation maximization(EM)algorithm,and then the competitive failure evaluation of multi-parameters was carried out by Monte-Carlo sampling method.According to the case analysis of the photodetector storage,the feasibility of this method was verified.
Keywords：Multi-parameter performance degradationCompetitive failureStorage lifeExpectation maximization algorithmMonte-Carlo sampling
Publication Date：2025-04-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 20-26 )