介绍了利用低能离子注入聚醚砜 (PES)薄膜进行光学、电学性能改性的研究。实验结果表明 ,注入后 PES薄膜的光吸收性和表面电导率都发生变化 ,苯环大 π键上的激发态与基态之间的能隙随注入剂量的增加而降低 ;薄膜表面电导率提高 4个数量级。通过对样品的红外光谱分析 ,讨论了聚醚砜薄膜在离子注入前后的结构变化。 The research on the optical and electrical properties modification of polyethersulfone (PES) films by using low energy ion implantation is introduced. The experimental results show that the optical absorptivity and the surface conductivity of the PES film both change after the implantation, and the energy gap between the excited state and the ground state on the large π bond on the benzene ring decreases with the increase of the implantation dose. The surface conductivity of the film increases by 4 A few orders of magnitude. The structure of polyethersulfone thin film before and after ion implantation was discussed by infrared spectrum analysis.