Work Function Engineering of Electrohydrodynamic-Jet-Printed PEDOT:PSS Electrodes for High-Performance Printed Electronics,ACS Applied Materials & Interfaces

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Work Function Engineering of Electrohydrodynamic-Jet-Printed PEDOT:PSS Electrodes for High-Performance Printed Electronics
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-01 , DOI: 10.1021/acsami.0c02580
Benzheng Lyu , Soeun Im ₁ , Hongyue Jing , Sungjoo Lee , Se Hyun Kim ₂ , Jung Hyun Kim ₁ , Jeong Ho Cho ₁

Affiliation

Poly(3,4-ethylenedioxythiophene):poly(4-styrene sulfonate) (PEDOT:PSS) has demonstrated outstanding performance as a charge transport layer or an electrode in various electronic devices, including organic solar cells, organic light-emitting diodes, and organic field-effect transistors (OFETs). The electrical properties of these devices are affected by the contact properties at the PEDOT:PSS–semiconductor junction. In this research, we performed work function (WF) engineering of electrohydrodynamic (EHD)-jet-printed PEDOT:PSS and successfully used it as an electrode to fabricate high-performance OFETs and complementary logic circuits. Two types of PEDOT:PSS materials–one with a high WF (HWF, 5.28 eV) and the other with a low WF (LWF, 4.53 eV)–were synthesized and EHD-jet-printed. The WF of PEDOT:PSS was deterministically modulated by approximately 0.75 eV through simple mixing of the two synthesized PEDOT:PSS materials in various ratios. OFETs fabricated with HWF and LWF PEDOT:PSS electrodes showed excellent electrical properties, including the ON/OFF switching ratio higher than 10⁷ and the highest carrier mobility greater than 1 cm²·V^–1·s^–1. Furthermore, the HWF and LWF PEDOT:PSS electrodes were integrated to fabricate complementary metal–oxide–semiconductor (CMOS) NOT, NOR, and NAND circuits.

中文翻译：

电液动力喷射印刷PEDOT：用于高性能印刷电子的PSS电极的功函数工程

聚（3,4-乙撑二氧噻吩）：聚（4-苯乙烯磺酸盐）（PEDOT：PSS）已证明在各种电子设备中作为电荷传输层或电极具有出色的性能，包括有机太阳能电池，有机发光二极管和有机场效应晶体管（OFET）。这些设备的电学特性受PEDOT：PSS-半导体结的接触特性影响。在这项研究中，我们进行了电动流体动力学（EHD）喷射印刷的PEDOT：PSS的功函数（WF）工程，并成功地将其用作制造高性能OFET和互补逻辑电路的电极。合成了两种PEDOT：PSS材料-一种具有高WF（HWF，5.28 eV），另一种具有低WF（LWF，4.53 eV）并用EHD喷墨印刷。PEDOT的WF：通过以各种比例简单混合两种合成的PEDOT：PSS材料，PSS确定性地被调制约0.75 eV。用HWF和LWF PEDOT：PSS电极制造的OFET具有优异的电性能，包括ON / OFF开关比大于10⁷和最高载流子迁移率大于1 cm ² ·V ^–1 ·s ^–1。此外，还集成了HWF和LWF PEDOT：PSS电极，以制造互补的金属氧化物半导体（CMOS）NOT，NOR和NAND电路。

更新日期：2020-04-03

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