| 초록 |
As interest in protecting the environment grows, interest in pollution-free energy source is also increasing. Among them, solar cells have been studied a lot to improve the performance of that. To achieve this, it is important to reduce the Schottky barrier between layers. Many research shows that the decrease of a Schottky barrier can lead better electron transfer property which is induced by formation of a favorable dipole at the cathode interface. Herein, 2,2’-(ethane-1,2-diylbis(oxy))bis(N,N,N-trimethylethananminium) benzenesulfonate (TEG-tos) was designed and synthesized by ion exchange reaction simply. To look into the effect of the dipole at the cathode interface, TEG-tos was inserted in the organic solar cells based on the configuration with ITO / ZnO / TEG-tos / PTB7:PC71BM / MoO3 / Ag. The kelvin probe microscopy measurement was also performed to quantify the effect of the dipole at the cathode interface |
