Development of high efficiency organic solar cells based on charge transfer complexes

我们已经开发了用于近红外光驱动的有机太阳能电池的有机金属电荷转移络合物（CT络合物）薄膜。我们发现浴铜灵（BCP）-钙配合物显示出类似于荧光剂的性质。BCP与Ca之间的强烈化学作用导致了大量的电荷转移和特殊的电子结构。另一种很好的光电导材料是酞菁铅-银配合物，它具有很高的光电导性能.然而，对于这些配合物，需要控制其结构性质以提高其光电转换效率。

We have developed organic-metal charge transfer complex (CT complex) thin films for near infrared light driven organic solar cells. We found that bathocuproine (BCP)- Ca complex shows semiconductor-like properties. A strong chemical interaction between BCP and Ca induces a large number of charge transfer and a peculiar electric structure. Another good material that we found is lead phthalocyanine- Ag complex, which demonstrated high photoconductivity. For these complexes, however, a control of the structural properties is required for the enhancement of their photoelectric conversion efficiency.