Inkjet-Printed Organic Transistors Based on Organic Semiconductor/Insulating Polymer Blends.

Yoon-Jung Kwon,Wi Lee,Yeong Park

doi:10.3390/ma9080650

Abstract

Recent advances in inkjet-printed organic field-effect transistors (OFETs) based on organic semiconductor/insulating polymer blends are reviewed in this article. Organic semiconductor/insulating polymer blends are attractive ink candidates for enhancing the jetting properties, inducing uniform film morphologies, and/or controlling crystallization behaviors of organic semiconductors. Representative studies using soluble acene/insulating polymer blends as an inkjet-printed active layer in OFETs are introduced with special attention paid to the phase separation characteristics of such blended films. In addition, inkjet-printed semiconducting/insulating polymer blends for fabricating high performance printed OFETs are reviewed.

Highlights

Organic field-effect transistors (OFETs) have received much attention as key components for enabling flexible electronics on plastic substrates [1,2]
Considering that cost-effective printing methods are technologically desirable for realizing large-area OFET arrays, all layers consisting of OFETs could be fabricated via printing methods [6,7,8,9]
Polarized optical microscopy images of the inkjet-printed lines of TIPS-pentacene and TIPS-pentacene/amorphous polycarbonate (APC) blends are shown in Figure 7a–f, respectively

Summary

Introduction

Organic field-effect transistors (OFETs) have received much attention as key components for enabling flexible electronics on plastic substrates [1,2]. Uniform morphology with reduced ring stain is necessary for inkjet-printed organic semiconductor. Since the solubility of organic semiconductor with an insulating for polymer is advantageous for enhancing jetting properties [18]. To obtain morphologies crystalline structures of inkjet-printed organic semiconductor/insulating polymer comparable orand enhanced device performances, the morphologies and crystalline structures of blend films need to be controlled. Semiconductor/insulating polymer blend film in the active layer in OFETs [19]. When insulating polymer blends are used as an active layer of OFETs, the phase-separated structure typically. PS is to the stabilization of ligament and coalescing of satellites can lead to greater added to TIPS-pentacene ink, the stabilization of ligament and coalescing of satellites can lead to control the droplet process This clearly indicates the added insulating greater of control of the generation droplet generation process2b). Vertical phase-separation in spin-cast blendblend film behavior of TIPS-pentacene in insulating polymer.

Polarized

Mixed solvent approach

Findings

Conclusions