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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 ( E a ) 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. |
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