She stated that under a hot sun as in deserts like our AZ, thin film Si cells would be more efficient than the traditional crystalline silicon modules. Pish posh !! The temp coeff of eff. for a - si is about - 0.2 % / deg C and that is certainly smaller than the - 0.5 % / deg C for pc Si or even the - 0.38 % / deg C for sc - Si ( all measured at 25 C ). On this basis the crossover between a-Si and pc Si happens at 50 C - far too hot for even AZ. And the x over never happens btwn a Si and sc Si.

Or does Oerlikon have any data to prove otherwise ?