• 文献标题:   Highly conductive and uniform graphene oxide modified PEDOT:PSS electrodes for ITO-Free organic light emitting diodes
  • 文献类型:   Article
  • 作  者:   WU XK, LIU J, WU DQ, ZHAO YR, SHI XD, WANG J, HUANG SJ, HE GF
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY C
  • ISSN:   2050-7526 EI 2050-7534
  • 通讯作者地址:   Shanghai Jiao Tong Univ
  • 被引频次:   50
  • DOI:   10.1039/c4tc00305e
  • 出版年:   2014

▎ 摘  要

We have successfully obtained a highly transparent and conductive film by doping poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) with graphene oxide (GO) and sodium dodecyl benzene sulfonate (SDBS). The PEDOT: PSS hybrid film mixed with 0.02% GO: SDBS by weight exhibits a sheet resistance of 85 ohm per square and a transmittance of 87% at 550 nm. The improvement of conductivity is mainly attributed to the weakening of coulombic attraction between PEDOT and PSS by the functional groups on GO nanosheets, and forming an extended conductive network by connecting PEDOT chains with GO nanosheets. Using the optimized PEDOT: PSS hybrid film as an anode, indium tin oxide (ITO)-free organic light emitting diodes (OLEDs) have been demonstrated on glass and polyethylene naphthalate (PEN) substrates, showing better performance than that with ITO as the anode. This proves that such PEDOT: PSS and GO: SDBS hybrid films are promising alternatives to ITO for low cost flexible OLEDs.