9J.Ouyang,C.Q.Xu,W.Chu,Y.Yang,G.Li,J.Shinar,Improved stability of OLEDs with mild oxygen plasma treated PEDOT-PSS,Polymer,45,8443(2004).
10X.Crispin,W.Marciniak,G.Osikowicz,A.Zotti,W.Denier Van Der Gon,F.Louwet,M.Fahlman,L.Groenetdaal,W.R.Salaneck,Conductivity,morphology,interfacial chemistry,and stability of poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate):A photoelectron spectroscopy study,J.Polym.Sci.B,41,2561(2003).