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P‐166: All‐Solution‐Processed Multilayered Small‐Molecule OLEDs with High Device Efficiency
Author(s) -
Tseng HsinRong,
Meng HsinFei,
You JiaDa,
Horng ShengFu,
Yen FengWen,
Lin IFeng
Publication year - 2009
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 - 10.1889/1.3256672
Subject(s) - oled , materials science , pyrene , solution process , dopant , naphthalene , vacuum deposition , aniline , dissolution , layer (electronics) , coating , deposition (geology) , solubility , fluorescence , molecule , diode , thin film , optoelectronics , chemical engineering , nanotechnology , optics , organic chemistry , chemistry , doping , paleontology , physics , sediment , engineering , biology
Abstract All‐solution‐processed multilayer blue small molecular organic light‐emitting diodes are fabri‐cated by blade coating method. Fluorescent blue host,1‐(7‐(9,9′‐bianthracen‐10‐yl)‐ 9,9‐dioctyl‐9H‐fluoren‐2‐yl)pyrene, and blue dopant, 4,4′‐(1E,1′E)‐2,2′‐(naphthalene‐2,6‐diyl)bis(ethene‐2,1‐diyl)bis(N,N‐bis(4‐hexylphenyl) aniline), are synthesized to achieve good solubility and pinhole‐free thin film by solution process. The multilayer device structure with hole/electron transport layer is achieved by blade coating method without the dissolution problem between layers. The efficiency of the all‐solution‐processed device is 4.8 cd/A at 1,200 cd/m2, close to that by thermal deposition in high vacuum chamber.