[10p-S222-1~15] 12.4 Organic light-emitting devices and organic transistors

▲ [10p-S222-2] Melt-processing of highly crystalline organic semiconducting layers for organic optoelectronics

〇JeanCharles Maurice Ribierre^1,2, Zhao Li^1,2, Masanobu Uchiyama^3,4, Tetsuya Aoyama⁴, Anthony D'Aleo⁵, Fabrice Mathevet⁶, Chihaya Adachi^1,2 (1.OPERA, Kyushu Univ., 2.JST-ERATO, 3.University of Tokyo, 4.RIKEN, 5.CNRS-UMI, 6.Sorbonne University)

Keywords:organic semiconducting thin film, Melt-processing, organic optoelectronics

Organic semiconductors have been intensively investigated and used in a variety of organic optoelectronic devices such as organic light-emitting diodes (OLEDs), organic lasers, organic solar cells and organic field-effect transistors. A number of different techniques including vacuum vapor deposition and spin-coating have been used to deposit them into thin films. Here, we report on a simple and versatile solvent-free and vacuum-free melt-processing method to fabricate organic layers with large crystal size. For this purpose, we used a solution-processable oligo(p-phenylene vinylene) derivative substituted at both extremities with pyrene moieties. The charge transport, photophysical and amplified spontaneous emission properties of the melt-processed films demonstrate that this fabrication method is suitable for the realization of organic electronic and light-emitting devices.