基于PEDOT:PSS的热电器件通常具有金属/PEDOT:PSS/金属型的器件构造，所以金属电极与聚合物的接触界面势必会对器件的热电性能有较大程度的影响。本实验拟通过向金属电极与PEDOT:PSS层之间引入辅助层来调节金属/PEDOT:PSS接触界面，由于PEDOT：PSS与金属电极存在两个界面，因此可以通过改变绝缘层的位置，系统研究此界面对器件热电性能的影响。本实验设计的器件结构可实现在相对较低的温度范围内，使器件的Seebeck系数达到450 μV/k。此数值为目前已报道的基于PEDOT：PSS薄膜热电器件的最高值之一。本论文的研究内容为发展热电器件提供了一种新的思路，即不需要开发新的聚合物，仅从器件结构出发，便可获得高的Seebeck系数，有助于进一步提高器件的热电性能。所用方法适用性强，有望在较低的成本下实现较高的热电转换效率。

Thermoelectric devices based on PEDOT:PSS usually have a device structure of metal/PEDOT:PSS/metal type, so the contact interface between the metal electrode and the polymer must have a great influence on the thermoelectric properties of the device. In this experiment, it is proposed to adjust the metal/PEDOT:PSS contact interface by introducing an auxiliary layer between the metal electrode and the PEDOT:PSS layer. Since there are two interfaces between the PEDOT:PSS and the metal electrode, the system can be studied by changing the position of the insulating layer. This interface affects the thermoelectric performance of the device. The experimental design of the device structure can achieve a relatively low temperature range, the device's Seebeck coefficient of 450 μV / k. This value is one of the highest values reported for PEDOT:PSS thin-film thermoelectric devices. The research content of this dissertation provides a new idea for the development of thermoelectric devices. That is, there is no need to develop new polymers. Only starting from the device structure, a high Seebeck coefficient can be obtained, which will help to further improve the thermoelectric properties of the device. The method used has strong applicability and is expected to achieve higher thermoelectric conversion efficiency at a lower cost.