Improvement of Crystallinity for F16CuPc Thin Film by DH-α6T Quasi-monolayer

Rongbin Ye, Yuya Sasaki

In this paper, we have reported on improvement of crystallinity for fluorinated copper phthalocyanine (F₁₆CuPc) thin film by an α,α’-dihexylsexithiophene (DH-α6T) quasi-monolayer. By the detailed XRD and SEM analysis, highly ordering α-F₁₆CuPc thin films could be deposited on SiO₂/Si substrates modified by a DH-α6T quasi-monolayer. The F₁₆CuPc/DH-α6T TFT worked in hole-enhancement and electron-depletion modes with their hole and electron mobilities of 4.10 x 10^-2 cm²/Vs and 2.19 x 10^-2 cm²/Vs, respectively. The bilayer device shows high electron mobility that is about 6 times greater than that of the single layer device, which originated from highly ordering and increasing of grain size of F₁₆CuPc thin films deposited on a DH-α6T quasi-monolayer.

https://dx.doi.org/10.31873/IJEAS.6.8.2019.15