| 초록 |
Recently, polymer solar cells based on conjugated polymers have received attention. The charge injecting/collecting properties are related to the interfacial properties between the semiconducting layer and the cathode or the anode. Insertion of an interfacial (or a buffer) layer at the interfaces was used to optimize the properties between the semiconducting layer and both the electrodes. As for the cathode side, water or alcohol soluble conjugated polymer electrolytes, alcohol-soluble neutral conjugated polymers have been mainly applied to the solution processible cathode buffer layer of polymer solar cells. In this presentation, new types of cathode buffer layer materials such as polyviologen, poly(sodium 4-styrenesulfonate), and polyvinyl alcohol for the applications in organic solar cells will be introduced. Also, we will present the effect of arrangement of side chains of conjugated polymer electrolytes on the photovoltaic properties. |
