期刊
MATERIALS ADVANCES
卷 1, 期 8, 页码 2755-2762出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ma00618a
关键词
-
资金
- Interreg (Project Rollflex) [1_11.12.2014]
Roll-to-roll (R2R) printing and coating techniques can be used for low cost and large-area mass production of organic electronic devices. While research in the photovoltaic field has developed R2R printed large-scale solar modules, research in solution-processed OLEDs has not progressed as far yet. In this work, we investigate all-solution processed OLEDs based on ink-jet printed silver bottom electrodes and spin-coating of all other layers. Ink-jet printing provides the advantages of mask-free patterning and non-contact manufacturing. As the top electrode, a conductive PEDOT:PSS formulation easily processable on organic layers due to a low contact angle is utilized. The all-solution processed top-emitting OLEDs achieve high luminance (7000 cd m(-2)) and an efficiency close to that of reference devices with evaporated electrodes: 4.2 cd A(-1)vs. 7.6 cd A(-1), respectively. The shelf stability is also tested and after seven months, the all solution-processed encapsulated OLED retains 82% of its initial EQE.
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