Diketopyrrolopyrrole Based Organic Semiconductor Materials for Field-Effect Transistors.

Xiangyu Zou,Meng Zheng,Shuaiwei Cui,Xueling Wei,Junqiang Li

doi:10.3389/fchem.2021.671294

Abstract

Over the past several decades, organic conjugated materials as semiconductors in organic field effect transistors (OFETs) have attracted more and more attention from the scientific community due to their intriguing properties of mechanical flexibility and solution processability. However, the device fabrication technique, design, and synthesis of novel organic semiconductor materials with high charge carrier mobility is crucial for the development of high-performance OFETs. In the past few years, more and more novel materials were designed and tested in the OFETs. Among which, diketopyrrolopyrrole (DPP) and its derivatives, as the electron acceptors to build donor-acceptor (D-A) typed materials, are the perspective. In this article, recently reported molecules regarding the DPP and its derivatives for OFETs application are reviewed. In addition, the relationship between the chemical structures and the performance of the device are discussed. Furthermore, an outlook of DPP-based materials in OFETs with a future design concept and the development trend are provided.

Highlights

During the past decade, organic semiconducting materials including π-conjugated small molecules and polymers have attracted increasing attention due to their potential applications in organic electronic devices such as organic field-effect transistors (OFETs) and organic photovoltaics (OPVs) (Zhao et al, 2016; Huang et al, 2017)
DPP Based Organic Semiconductor Materials. This could be ascribed that in the OFETs, charge carriers need to be frequently transferred between individual molecules and within molecules in order to transport from one electrode the another (Zhang et al, 2017a, 2020)
Though DPP-based materials were promising in OFETs, great opportunities and challenges still remain in the development of DPP-based semiconductors with high charge carrier mobility, typically for the ambipolar type OFETs

Summary

INTRODUCTION

Organic semiconducting materials including π-conjugated small molecules and polymers have attracted increasing attention due to their potential applications in organic electronic devices such as organic field-effect transistors (OFETs) and organic photovoltaics (OPVs) (Zhao et al, 2016; Huang et al, 2017). To fabricate high-performance OFETs, charge transfer mobility (μ), threshold voltage, and current on/off ration are the three key factors. Among these three factors, high charge carrier mobility is the most important and a challenging, since the existing organic semiconductor’s charge transfer mobilities are far behind compared to the inorganic Sibased ones, resulting in it not meeting the commercial demand (Qiu et al, 2020). Except the device fabrication technique, the chemical structures of the organic semiconductors play a key role for improvement of the charge carrier’s mobility

DPP Based Organic Semiconductor Materials

CONCLUSION AND OUTLOOK