導電性高分子を電極とした有機薄膜太陽電池の開発

Abstract

"In this study, as substitution of ITO widely known of a transparent electrode used for an organic thin film solar cell we have paid attention to PEDOT/PSS film. Since the electrostatic interaction of PEDOT/PSS molecule becomes weaker by adding polar organic solvents, such as EG and DMSO, PEDOT/PSS promotes PEDOT nano structure. The nano structure improves hole carrier mobility. Therefore, the resistance between electrode and PEDOT/PSS layer decreases and the parallel resistance of the PEDOT/PSS layer increases by it. Decrease of the series resistance and increase of the parallel resistance are the factors improving the short-circuit current density and open-circuit voltage of the organic thin film solar cell. Moreover, when the multi-PEDOT/PSS layers were formed, the characteristics of multi-PEDOT/PSS layers were performed by theJ-V characteristics and transmissivities of multi-PEDOT/PSS. The transmissivitity of the multi-PEDOT/PSS film decreases with the number of the layer. The relation between the decrease of series resistance and increase of parallel resistance was closely shown to the decline of transmissivity."