红外光电材料和器件在红外检测中占据核心地位。稀土上转换材料可以把吸收的红外光转变为可见光，但当前对稀土上转换材料的研究仅局限于光学转换方面，光电转换才刚起步，对直接的红外光电转换机理尚未进行探讨。本项目首次提出一种新的研究思路：即经红外光上转换激发的稀土纳米材料，在不同维度下把吸收的光子能量传递给受体，形成可与光转换竞争的红外光电效应。利用红外分光光谱结合开尔文探针力显微镜、扫描探针声学显微镜的新技术，在纳米和微区范围研究这一新的光电产生机理和作用条件，并构建阵列式红外光电传感器件。该研究使得从微观尺度探索新的稀土光电产生机制成为可能，对开发新型红外光电传感器和拓展稀土在光电领域的应用，具有十分重要的理论和现实意义。

Infrared optoelectronic materials and devices occupy an important position in the field of infrared detection. Upconversion materials based on rare earth can absorpt the infrared light and emit visible light. The current research on rare earth upconversion material only restricted to optical conversion. As just started for photoelectric conversion, the mechanism of infrared photoelectric direct conversion has not been discussed. The project was the first to propose a new idea: the excited infrared upconversion rare earth nanomaterials pass the photon energy absorption to receptors in different dimensions, then form the effect of infrared photoelectric competited to the light conversion. By new technology of infrared light spectroscopy combined Kelvin probe force microscope, scanning probe acoustic microscope technology, we can study the new photoelectric mechanism and working conditions at the nanoscale. The array type infrared photoelectric sensor will be constructed. The study makes it possible to explore the photoelectric conversion mechanism of new rare-earth at the nanoscale. There is very important theoretical and practical significance in developing a new type of new infrared photoelectric sensor and expanding the application of rare-earth in the field of the photovoltaic industry.