“…As the organic buffer layers a variety of materials as copper phthalocyanine (Van Slyke et al, 1996;Shi & Tang, 1997;Tadayyon et al, 2004), α-Septithiophene (Park et al, 2002), Langmuir-Blodjett films of polymethylmethacrylate (Kim et al, 1996), polytetrafluoroethylene (Gao et al, 2003), fluoropolymers , fluorenebased poly(iminoarylene)s (Jung et al, 2002), conductive polymer such as polythiophene (Arai et al, 1997), poly(3,4-ethylenedioxythiophene) (Carter et al, 1997;Berntsen et al, 1998), and polyaniline (Krag et al, 1996) etc. have been tested.…”