Journal
MATERIALS & DESIGN
Volume 160, Issue -, Pages 572-577Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2018.09.051
Keywords
Dry film photoresist; Silver nanowire; Insulator; Electrode; Paper; Organic light-emitting diode
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Funding
- National Research Foundation (NRF) of Korea - Ministry of Science, Information and Communications Technology [NRF-2018R1C1B5043900]
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In this study, the utilization of a dry film photoresist (DFR) was explored for fabricating a patterned insulating layer in Ag nanowire (AgNW) bottom electrodes with various designs for flexible organic light-emitting diodes (OLEDs). With a single hot-pressing step, a pre-patterned DFR insulator was attached onto the AgNW electrodes, thus forming insulated electrodes in desired patterns. In the same hot-pressing step, AgNWs were also embedded into poly(methyl methacrylate), which sufficiently reduced the root mean square (RMS) roughness (similar to 5 nm) for use in OLED lighting. Using DFR, AgNW electrodes with various shapes were fabricated to realize shaped flexible OLED lighting. The performance of OLED lighting employing the AgNW/patterned-DFR insulator electrode was comparable to that of indium-tin-oxide-based OLED lighting. Further, the DFR insulator was utilized as a planarization layer in a paper-based OLED lighting, which operated well with a turn-on voltage of 3.5 V and maximum luminance of 157 cd/m(2) at 7.5 V. (C) 2018 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
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