where E c is the confinement energy of the ground state, and Γ c is the scattering rate. It should be noted that Γ c must be constant in order for this methodology to remain valid. Gurioli and co-workers , who showed that any photoluminescence decay was intimately related to any non-radiative loss within the system of interest and can be provided through measurement of the decay time, confirming that internal conversion was the primary loss mechanism in quantum well structures. Specifically, they show that the standard Arrhenius fitting often used was only applicable in the case where any temperature dependence was weak to negligible, while Colocci and co-workers noted that loss mechanisms could not be negligible in any way, especially when considering pure radiative recombination was found to possess a linear dependence on excitation power, contrary to the expected dependences on temperature. Despite this model omitting several well documented phenomena, such as sub-band warping and non-parabolicity , this method still manages to capture the primary features of internal conversion qualitatively, and is able to avoid unnecessary complications.