[11p-M111-1~19] 12.1 Fabrications and Structure Controls

[11p-M111-1] [Young Scientist Presentation Award Speech] Polymorphism of Tetraphenylporphyrin in a Spin Coated Film

〇Kazutaka Tomita¹, Nobutaka Shioya¹, Takafumi Shimoaka¹, Takeshi Hasegawa¹ (1.ICR, Kyoto Univ.)

Keywords:organic semiconductor, molecular orientation, pMAIRS

Since the device performance of an organic thin-film semiconductor significantly depends on the crystal structure and molecular orientation in the film, understanding of the structure-controlling factors is of great importance. In the present study, the structural controlling factors of a tetraphenylporphyrin (H2TPP) thin film are revealed by using the pMAIRS and GIXD techniques. The crystal structure of a spin-coated H2TPP film after thermal annealing is revealed to be determined by the initial film structure, which can be controlled by the evaporation time of the spin-coating solvent.