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P‐225: Late‐News‐Poster: Organic Thin‐Film Coating by Micro Multi‐Nozzle Jet Method
Author(s) -
Shin Kwon-Yong,
Kang Kyungtae,
Lee Sang-Ho
Publication year - 2020
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14333
Subject(s) - nozzle , materials science , coating , jet (fluid) , head (geology) , thin film , suction , fabrication , composite material , suction cup , nanotechnology , mechanical engineering , mechanics , alternative medicine , pathology , geomorphology , engineering , geology , medicine , physics
We explored the micro multi‐nozzle jet coating to obtain an organic thin film that is mostly deposited by the slot‐die coating in solution‐based fabrication of organic light‐emitting devices. We proposed a unique micro multi‐nozzle jet method that applies vacuum suction to the side of jetting flow for a stable column jet flow. A micro multi‐nozzle jet head was designed and fabricated to operate in both the jetting and suction modes simultaneously. A Poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) solution was selected as a test ink to perform the feasibility test for the thin film coating application. To coat uniform organic thin film less than 100 nm, we investigated the physical parameter conditions such as jetting pressure, head suction pressure, stage speed and coating head printing pitch.