| 초록 |
Non-conventional electronics are emerging in a form of wearable electronics. In this talk, we present electron-transporting properties of imide-containing polymer semiconductors and their applications in organic n-channel transistors and nonvolatile memory devices. Highly pi-conjugated and fused aromatic units with diimide groups are able to be easily reduced from neutral state. This capability results in efficient transport of negative charge carriers through the polymers. Various thiophene derivatives were used as the comonomers. In an alternating arrangement of electron-donors and acceptors in the backbone, we were able to tune the molecular bandgap in a range of 1–2 eV. We have engineered the molecular structures to tune the electron-transporting and trapping properties, and show that the properties are sensitive to the core structures and side-chains. We have applied the series of polymers to organic transistors, complementary circuits, and transistor-based memory devices. |
