| 초록 |
Organic solar cells (OSCs) have continuously attracted due to their strong points, such as lightweight, large-area modules using a continuous roll-to-roll process, flexible devices using a polymer solution at low temperatures, etc. Recently, the morphology control of layers have been actively searched in order to improve power conversion efficiency (PCE) of OSCs. Especially, the effective surface/interface engineering of buffer layers have been widely studied because they ensure better physical contact between the electron collecting buffer layers (ECBL) and the bulk heterojunction (BHJ) layers, and help lower the work function of the metal oxide ECBL. Recently, we fabricated inverted OSCs with interfacial layer using polyacetylene-based polyelectrolyte, which assists in the work function modification for ECBL. In this presentation, we will show our recent efforts on enhanced PCE of OSCs with interfacial layers and important roles of modified ECBL at OSCs devices. |
