Effect of Substrate Temperature on Twin Donor Layer Organic Solar Cell

摘要： The growth mechanism of the active layers of twin donor layer organic solar cell based on zinc and copper phthalocyanine materials at different substrate temperature and its influence on the device performance has been investigated. AFM measurements show the variation of morphology of the thin films with different substrate temperature. Devices with active twin layer deposited in 150 ?C are found to have the highest short circuit current 1.26 mAcm-2 and show the highest efficiency 0.2%. The other electrical characteristics of the as fabricated devices were obtained by investigating the current–density (J-V) curve, the fill factor (FF) and external quantum efficiency (EQE) and electrochemical impedance spectroscopy (EIS) analysis.