Abstract
This paper describes the result of photonic structure design to control solar/thermal radiation by using evolutionally algorithm (EA) which is powerful method to find optimal solution for complex systems. We used EA-FDTD method to design photonic structure which can concentrate solar/thermal radiation according to photosensitivity of PV/TPV cells. In the EA-FDTD, a combination of genetic algorithm and immunity algorithm was incorporated with FDTD method. The results show that the EA-FDTD method can automatically generate possible optimal geometry of the photonic structure which can work as a wavelength selective concentrator.