| 초록 |
Recently, organometal halide perovskite has attracted significant attention as a viable member of next generation photovoltaics because of intense light absorption, long exciton diffusion length, decent ambipolar charge mobility, proper band gap, and excellent carrier transport. In particular, perovskite/PCBM planar heterojunction solar cells that can be fabricated by simple solution process at low temperature have been considered as a promising power source for flexible electronic devices. In general device structure, poly (3, 4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT:PSS) is mainly used as interlayer and studies on the optimized interlayer has not been sufficiently performed yet. In this study, we investigated polymer composition of PEDOT:PSS and perfluorinated resin (PFI) as interlayer. Surface morphology and electrical characteristics of polymer composition as well as their effect on the performance of devices will be discussed. |
