A genetic algorithm analysis of photoluminescence experimental data from interdiffused quantum wells

The genetic algorithm method has been applied to analyze experimental photoluminescence data from interdiffused quantum well heterostructures. It has been shown that this method offers a direct determination of the interdiffusion activation energy (Ea) and prefactor (D∘), without the need for the Arrhenius plot. These interdiffusion parameters, determined using the genetic algorithm method, were shown to be comparable with those obtained by the least-squares analysis method. Any extrinsic interdiffusion process was shown to be detected more clearly when using the genetic algorithm method unlike the least-squares analysis which was shown to draw, in some cases, unreliable conclusions.