Facile Direct Printing of DPP-Based Polymers for Organic Field-Effect Transistors and Logic Gates

Abstract

Polymer semiconductors having solubility in organic solvents can enable facile, low-cost, and large-area solution processes to fabricate electronic devices with various applications. However, it has been a challenge to build complicated circuits by using them due to device-to-device variation. In this study, we designed a diketopyrrolopyrrole (DPP)-based polymer with long and branched alkyl side chains to improve the solubility of DPP polymers. While the long and branched side chains are introduced to the DPP moieties for improved solubility, the far branching point in the side chains was expected to prevent severe steric hindrance of the long side chains and to allow DPP moieties to have π–π interactions and form crystalline structures. To examine the feasibility of using P29DPP-TT as a semiconductor in integrated electronic systems, the electrohydrodynamic (EHD) jet printing technique was used in for local area patterning. The organic field-effect transistors (OFETs) incorporating EHD-printed P29DPP-TT yield promising field-effect mobility (μFET) of 0.55 cm2 V–1 s–1. Complementary inverters and NAND/NOR logic gates were also realized by fabricating OFETs with line-printed P29DPP-TT and polymer gate dielectrics. It indicates that P29DPP-TT with excellent solubility can be applied to solution-processed integrated electronic devices.

Theoretical and Experimental Study of Different Side Chains on 3,4-Ethylenedioxythiophene and Diketopyrrolopyrrole-Derived Polymers: Towards Organic Transistors

“…5,7-bis(trimethylstannyl)-2,3-dihydrothieno [3,4-b][1,4]dioxine (EDOT-SnBu 3 ) was acquired from SunaTech (Suzhou, China). Both DPP-Br-C8C10 and DPP-Br-C10C12 were prepared from DPP units via alkylation and bromination reactions [49,50].…”

Organic Transistors Based on Highly Crystalline Donor–Acceptor π-Conjugated Polymer of Pentathiophene and Diketopyrrolopyrrole

“…Simultaneously, the DPP itself is an electron acceptor unit, which can further significantly improve the carrier mobility and device performance of the material through donor–acceptor interactions within the main chain [ 24 ]. Kim et al reported polymers based on the composition of DPP and thieno[3,2-b]thiophene, which enabled direct line printing transistors [ 25 ]. Similarly, Tsuyoshi et al also optimized the performance of devices by adjusting the molecular weight of a DPP and thiophene based polymer [ 26 ].…”

Design of Novel Functional Conductive Structures and Preparation of High-Hole-Mobility Polymer Transistors by Green Synthesis Using Acceptor–Donor–Acceptor Strategies

“…Sona et al prepared PTDPP-TT materials and revealed an average mobility of 0.90 cm 2 V −1 s −1 [25]. These structural analogs are also used in solution-processed integrated electronic components due to their excellent solubility and show a mobility of 0.1 cm 2 V −1 s −1 and low hysteresis [26]. The introduction of a double bond between thiophene and thiophene facilitates the formation of conformational locks, thus further ensuring the coplanarity of the material.…”