UV irradiation induced conductivity improvement in poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) film

作者：Xing YingJie^*; Qian MinFang; Wang GuiWei; Zhang GengMin; Guo DengZhu; Wu JinLei

来源：Science China Technological Sciences, 2014, 57(1): 44-48.

DOI：10.1007/s11431-013-5426-8

• conductivity
• ultraviolet
• photo-cross-linking

We describe a simple method to increase the conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) film by exposure to ultraviolet (UV) light in vacuum. Up to four order of conductivity improvement (from 10(-3) to 50 S/cm) is achieved by irradiating PEDOT:PSS film with 254 nm ultraviolet (UV) light. Increased conductivity in UV treated PEDOT:PSS film is stable under ambient exposure. The mechanism for conductivity improvement is investigated by current-voltage measurement, atomic force microscopy, and absorption spectrum. Photo-cross-linking of PSS chains is determined as the reason for conductivity improvement. Our result demonstrates that UV treatment is capable of modifying the conductivity of PEDOT:PSS film independent of the process of film formation.

• 出版日期2014-1
• 单位北京大学