High Field-Effect Mobility in an Organic Thin-Film Transistor with a Solid-State Polymerized Polydiacetylene Film as an Active Layer

摘要

Organic field-effect transistors (OFETs) have recently been studied in great detail because of their advantageous flexibility and their potential for use in low-cost device applications, such as active matrix circuits in organic light-emitting diodes, electrophoretic displays, and disposable integrated circuit (IC) tags. However, the field-effect carrier mobilities of OFETs are of the order of 10~(-1)-10~(-5)cm~2V~(-1)s~(-1), except for a few examples such as pentacene'1' and rubrene single crystals: a low current density, with slow operational speed, limits practical device applications. Forming large crystalline domains and improving molecular alignment have been identified as ways of enhancing field-effect mobility.