相互浸透型有機薄膜太陽電池の開発

Abstract

When preparing organic thin film solar cell，the wet processes, such as spin coating method and the drop casting method are generally used for the fabrication of organic thin film solar cell. The spin coating and the drops casting methods are simple technique, the high-quality thin film and they are suitable for the system of mass production，such as roll to roll. On the other hand，by these methods，two or more layers preparing by the solvent of the same kind are very difficult，and need selection of the solvent which does not damage the organic thin film used as a lower layer. However，the organic semiconductor typically used by organic thin film solar cell have the hydrophobic property. Therefore， multilayer is difficult and the semiconductors used as an organic solar cell will be limited. In another，by using the spray coating method，the damage to lower layer films by solvent can be lessened. In this paper，organic thin film solar cells are prepared by spray coating method and evaluated the characteristics.