Kittaneh, OmarMajid, MohamedHelal, SaraBarakat, EnfelAmmach, Salwa2023-06-042023-06-04202221309-0127http://dx.doi.org/10.20508/ijrer.v12i1.12778.g8436http://hdl.handle.net/20.500.14131/892In this study, it has been found that a lognormal distribution better fits the accelerated lifetime modeling of commercial concentrator lattice match triple-junction GaInP/GaInAs/Ge cells, as compared to the Weibull distribution. Various statistical tests were conducted on real-time datasets from accelerated life testing, which significantly favored the lognormal distribution. To compare the models, the Arrhenius-Weibull and lognormal stress relationships were used to predict the lifetime model under nominal conditions, and they provided similar estimates. However, the two models exhibited different behaviors, particularly in their tails and peaks. The study also conducted an intensive Monte Carlo simulation to evaluate the distribution robustness against censoring schemes, which again confirmed that type I censored samples of the lognormal distribution are more efficient than those of the Weibull distribution in estimating the distribution parameters.In this paper, we show that modeling the accelerated lifetime of commercial concentrator lattice match triple-junction GaInP/GaInAs/Ge cells by a lognormal distribution is better fitted than by Weibull distribution has been adopted by most of the research literature in the field. A fair number of statistical tests are used to analyze real-time datasets from accelerated life testing that significantly favors the lognormal distribution. For comparison purposes, the Arrhenius-Weibull and lognormal stress relationships are used to predict the lifetime model under nominal conditions. They provide comparable estimates to the nominal meantime to failure and activation energy of the cells, yet, the two models possess different behaviors, especially at their tails and peaks. Moreover, an intensive Monte Carlo simulation is conducted to examine the distribution robustness towards the censoring scheme. The results again affirm that type I censored samples of Lognormal are more efficient than those of Weibull in estimating the distribution parameters.enAccelerated life test; Arrhenius life-stress relationship; Concentration photovoltaic systems; Efficiency of censored samples; Goodness-of-fit tests; Lognormal distribution; Solar cells; Weibull distributionRENBLE