| 초록 |
A novel synthetic method employing carbon nanodots (CNDs) to construct a highly porous structure of polyaniline (PANI) is reported. CNDs inhibited secondary growth reaction of PANI molecules onto the previously formed polymer, and preserved honeycomb structure effectively. Moreover, CNDs facilitated head-to-tail coupling by combining with aniline in amide bonds, and thus molecular structure and product yield of PANI significantly improved. As a result of these nucleation effects of CNDs, the synthesized PANI-CND showed enlarged surface area (43.64 m2 g‒1), and CSA-doped PANI-CND film exhibited high electrical conductivity over 800 S cm‒1. When used as counter electrodes (CEs) of dye-sensitized solar cells (DSSCs), DSSCs with PANI-CND CEs showed superior power conversion efficiency (η=7.45 %) than those with conventional platinum (η=7.37 %) and pristine PANI CEs (η=5.60 %). |
