| 초록 |
Polymer solar cells based on the interpenetrating networks of electron acceptor and donor have been the hot research topic in recent year, due to their advantages of low-cost manufacturing, light weight and good flexibility. Generally the device consists of ITO/PEDOT:PSS/ PCBM:P3HT/metal electrode. One of the drawbacks of this type of conventional polymer solar cells is the use of PEDOT:PSS. The acidity of PEDOT:PSS induces poor interface between ITO and PEDOT:PSS and has an adverse effect on the device performance over time. To solve these problems, several groups are studying on the various metal oxides as promising buffer layers. Here, we report on the efficient polymer solar cells including oxide buffer layers produced by spray pyrolysis, which is a compatible method to the continuous roll-to-roll process. The properties of sprayed oxide layers and the influence of buffer layers on device performance are investigated. |
