Increasing the work function of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) by ultraviolet irradiation

Yow Jon Lin, Fu Ming Yang, Chi Yen Huang, Wei Yang Chou, Jay Chang, Yi Chun Lien

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72 Citations (Scopus)

Abstract

The effects of ultraviolet (UV) irradiation on the work function of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT:PSS) have been investigated in this study. Spectroscopic methods [x-ray photoelectron spectroscopy and Raman spectroscopy (532 nm excitation)] and electrical conductivity measurements were used to characterize the electrical conducting polymer PEDOT:PSS prepared by UV irradiation. The authors found that UV irradiation could lead to an increase in the work function and the enhancement of electrical conductivity of PEDOT:PSS, resulting from a decrease in the number of the charge-trapping-related defects and the formation of linear or expanded-coil conformation.

Original languageEnglish
Article number092127
JournalApplied Physics Letters
Volume91
Issue number9
DOIs
Publication statusPublished - 2007 Sep 7

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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