| 초록 |
Although polymer solar cells (PSCs) have attracted tremendous attention as next generation power source due to its simple solution process, flexible application, light weight, and low cost, several critical issues such as use of expensive Indium-tin-oxide (ITO) electrode should be considered to realize PSCs. As alternative transparent electrodes, studies on metal nanostructures, carbon nanostructures, and conducting polymers have been reported. Among various ITO-alternative electrodes, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is promising candidate because of its solution processability, high transparency, and mechanical flexibility. However, PEDOT:PSS electrodes have problems such as undesirable rough surface morphology, inducing poor cell performance. In this study, to optimize PEDOT:PSS based ITO-free PSCs, we inserted interfacial buffer layers between PEDOT:PSS electrode and photoactive layers and their effect will be discussed. |
