[17p-P09-1~11] 12.1 Fabrications and Structure Controls

[17p-P09-3] Orientation Control of Naphthalene Diimide Derivative Films by Buffer layers

〇Takuya Izumi¹, Hiroaki Usui¹, Satoshi Usui² (1.Tokyo Univ. Agri.&Tech., 2.Niigata Univ.)

Keywords:Vacuum Deposition, Thin film, Naphthalene diimide

In small-molecule organic electronic devices, the crystallinity and orientation of the organic thin film greatly affect the electrical properties of the device. Naphthalene diimide (NDI) derivatives are useful as n-type semiconductor materials and are known to form polycrystalline thin films. It is known that the substituents on the imide nitrogen of NDI derivatives have a significant effect on the orientation, and materials such as Bzl-NDI form thin films with an erect molecular structure. On the other hand, aromatic acid anhydrides such as NTCDA and materials without substituents are expected to show a different orientation from Bzl-NDI. Therefore, we thought that the orientation of Bzl-NDI might be changed by forming Bzl-NDI films on them.