NDLI: Inkjet-Printed Highly Conductive Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) Electrode for Organic Light-Emitting Diodes

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Inkjet-Printed Highly Conductive Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) Electrode for Organic Light-Emitting Diodes

Content Provider	MDPI
Author	Liu, Yadong Xie, Juxuan Liu, Lihui Fan, Kai Zhang, Zixuan Chen, Shiyan Chen, Shufen
Copyright Year	2021
Description	Recently, inkjet printing technology has attracted much attention due to the advantages of drop-on-demand deposition, low-cost and large-area production for organic light-emitting diode (OLED) displays. However, there are still some problems in industrial production and practical application, such as the complexity of ink modulation, high-quality films with homogeneous morphology, and the re-dissolution phenomenon at interfaces. In this work, a printable poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) ink is developed and obtains an adjustable viscosity. Finally, a patterned PEDOT:PSS electrode is fabricated by inkjet printing, and achieves a high conductivity of 1213 S/cm, a transparency of 86.8% and a uniform morphology without coffee-ring effect. Furthermore, the vacuum-evaporated and solution-processed OLEDs are fabricated based on this electrode and demonstrate a current efficiency of 61 cd/A, which is comparable to that of the indium tin oxide counterpart. This work confirms the feasibility of inkjet printing technology to prepare patterned electrodes and expects that it can be used to fabricate highly efficient optoelectronic devices.
Starting Page	889
e-ISSN	2072666X
DOI	10.3390/mi12080889
Journal	Micromachines
Issue Number	8
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2021-07-28
Access Restriction	Open
Subject Keyword	Micromachines Manufacturing Engineering Organic Light-emitting Diodes Inkjet Printing Pedot:pss Coffee-ring Effect
Content Type	Text
Resource Type	Article

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