Fabrication of nano-structure using liquid crystal phase and its application to organic solar cells

本论文对P-N纳米结构的制备及其在有机薄膜太阳能电池中的应用进行了研究。我选择了富勒烯衍生物和液晶材料分别作为N型和P型半导体。在具有较低有序液晶相的材料中，液晶相在低浓度富勒烯衍生物(小于几%)的混合物中消失。另一方面，在具有高度有序液晶相的材料中，尽管存在高浓度的富勒烯混合物，但仍出现了中间相。这一事实表明，高度有序的液晶在利用液晶相制备纳米结构方面是非常有效的。我还开发了具有高度有序的液晶相的液晶材料，并测量了它们的载流子传输特性，并开发了利用液晶相制备非常均匀的薄膜。

I have tried to investigate the fabrication of P-N-nano-structure and its application to organic thin film solar cells. I chose the fullerene derivative and liquid crystalline materials as N-type and P-type semiconductors, respectively. In the materials having lower ordered liquid crystal phases, the liquid crystal phase disappeared in low-concentration mixture with fullerene derivative(less than several%). On the other hand, in the material having highly ordered liquid crystal phase, mesophase appeared in spite of high-concentration mixture with fullerene. This fact indicates that the highly ordered liquid crystal is very effective for fabrication of nano-structure using liquid crystal phase. I also developed liquid crystalline materials having highly ordered liquid crystal phase and measured their carrier transport properties, and developed fabrication of very uniform thin film using liquid crystal phases.