| 초록 |
There is currently considerable interest in bulkhetero junction based organic solar cells for use as new generation energy harvesting devices, due to their low cost, ability to flex, simple process. To obtain the high performance organic solar cells, it is of importance to prepare highly conductive, low resistance and transparence electrode. Until now, organic solar cells have been fabricated on an ITO anode thin film mostly, because its low sheet resistance for carrier extraction and high transmittance in visible range. However, to realize the large area organic solar cell process, it is necessary to reduce the linear resistance of TCO materials for effective hole extraction and reducing series resistance. For these reasons, several approaches have been employed to decrease the linear resistance of TCO materials including surface doping, heat treatment and metal grid anode layer. In this work, the characteristics of organic solar cells fabricated on with and without Al grid ITO electrode as a function of active area are described. Organic solar cells fabricated on metal grid ITO electrode show higher power conversion efficiency, due to reduced series resistance in organic solar cell devices. This indicates that the metal grid ITO electrode is a promising method to improve device performance for large-area organic solar cell module applications. |
