本项目面向多光谱光电转换材料与器件中纳米结构集成和表界面，特别是把可见和红外响应的两种量子点对光子的调控能力与一维纳米结构对光生载流子的输运能力进行有效组合，结合分段集成和表面调节实现可见和红外波段光能的同时转换。项目旨在通过多学科交叉研究红外与可见波段的两种量子点在一维纳米结构上的分段集成，以及光电转换中的表界面作用，解决光生载流子在集成结构中表界面的迁移和两种量子点在一维纳米结构上的分段集成等关键问题。期望通过纳米结构集成与表界面对多光谱光电转换的作用规律研究，解决基于纳米集成结构的多光谱光电转换等难点问题，为多光谱光电转换器件提供新结构和新原理，拓展纳米结构中光吸收、电荷分离和光生载流子输运过程中的调控新思路和新途径。本项目前期在纳米材料，纳米结构集成和光电器件研究等方面都有坚实的基础，并拥有运行良好的实验平台，通过项目实施掌握基于纳米结构的光电转换新途径和多光谱光电器件新技术。

The proposal focuses on the controllable integration of nanostructures and the manipulations of surface/interface used for multicolor photoelectronic conversions in functional materials and devices. In particular, we are going to assembly axial-segmentally two types of quantum dots with infrared and visible photoelectronic resonance onto one-dimensional nanostructures with excellent electronic transport, and then convert infrared and visible photons by using nanostructure integration and surface manipulation. During the studies on multicolor photoelectronic conversions based on integrated nanostructures, the following key challenges need to be resolved in this proposal: i) intrinsic correlations between carrier transport or photoelectronic conversion and nanostructure surface/interface, ii) axial assembly of two types of quantum dots onto one-dimensional nanostructures. Such investigations on integrated nanostructures and surface/interface will open up significant steps for multicolor photoelectronic conversion based on quantum dots and one-dimensional nanostructures, and for a major breakthrough on axial integration of two types of quantum dots onto one-dimensional nanostructures. Moreover, the proposal will bring out new opportunities for achieving multicolor photoelectronic conversion based on nanostructures. By studying the actions and relations of nanostructures and surface/interface, we will discover alternative mechanism and process of light-harvest, charge separation and carrier transport in nanostructure and surface used for multicolor photoelectronic conversion. The proposal is based on some important progresses on nanomaterials, assembly and photoelectonic devices, and advanced scientific equipments we have. We also hope to obtain novel mechanism and technologies for multicolor photoelectronic conversion devices based on nanostructures.