Organic evaporation system 1 - Thin film layers for simple solar cell structure HTL(Hole Transfer Layer)+P doping Photoactive layerETL(Electron Transfer Layer)+N dopingOrganic evaporation system 2 - Thin film layers for Tandem structure HTLs(Hole Transfer Layers)+P doping Photoactive layers ETLs(Electron Transfer Layer)+N doping Low damage sputtering system : Transparent electrode (ITO)