Molecular Orientation Analysis of a C8-BTBT Thin Film Grown under an External Temperature Gradient

Hidetaka Watanuki, Kei Mitsuhara, Masaru Takizawa
2018 e-Journal of Surface Science and Nanotechnology  
Organic semiconductors with a high carrier mobility can be realized by controlling a growth direction of the thin film. A new method to control the growth direction is using a temperature gradient. Molecular orientation strongly influences on the carrier mobility. Therefore, the molecular orientation of 2,7-dioctyl benzothieno benzothiophene (C8-BTBT) thin films grown under a temperature gradient, has been evaluated by X-ray absorption fine structure measurements. It is considered that the
more » ... dered that the C8-BTBT has a molecular orientation with standing up on the substrate and is aligned to the temperature gradient direction.
doi:10.1380/ejssnt.2018.79 fatcat:n7myzddqtnazhaj2k6ymgah5ze