Development and carrier transport mechanism of self-organized core-shellquantum dot bulk heterojunction solarcells

本工作的目的是发展和阐明自组织核壳量子点体异质结太阳电池的载流子传输机制。体异质结是产生自由载流子的一种有效方法，而且电荷转移可以在半导体界面进行。在本工作中，富勒烯被用于n型半导体，而金属铜氧化物、CuInS_2、金属酞菁衍生物、卟啉和聚乙烯咔唑被用于p型半导体。并对激子扩散阻挡层进行了介绍和评价。此外，在太阳能电池的有源层中添加了纳米金刚石和锗分子。新的研究方向是利用电子显微镜、X射线衍射仪和电子结构计算来研究太阳电池的性能与微结构的关系。这项研究的影响涉及到通过微观结构分析、性能测量和理论计算来研究太阳能电池。

The purpose of the present work is to develop and clarify carrier transport mechanism of self-organized core-shell quantum dot bulk heterojunction solar cells. Bulk heterojunction is an efficient method to generate free charge carriers, and the charge transfer is possible at the semiconductor interface. In the present work, fullerenes were used for n-type semiconductors, and metal copper oxides, CuInS2, metal phthalocyanine derivative, porphyrin and poly-vinylcarbazole were used for p-type semiconductors. Exciton diffusion blocking layers were also introduced and evaluated. In addition, nanodiamond and germanium based molecules were added into the active layers of the solar cells. The novel aspect of the research is to investigate the relation between properties and microstructuresofthe solar cells usingtransmission electron microscopy, X-ray diffraction and electronic structure calculation. The impact of the research concerns the study of the solar cells by means of microstructural analysis, property measurements and theoretical calculations.