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 

机构地区：[1]Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University

出　　处：《Science China(Technological Sciences)》2014年第1期44-48,共5页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61076057,61376059,91221202,61171023);the National Basic Research Program of China("973"Program)(Grant Nos.2012CB932701,2011CB933001)

摘　　要：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 3to 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.

关 键 词：CONDUCTIVITY ULTRAVIOLET PHOTO-CROSS-LINKING 

分 类 号：O631.3[理学—高分子化学]