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P‐139: Development of OLEDs with a Highly Efficient Electron Transport Layer and Ohmic Cathode Using Nanostructured Carbon Fullerene
Author(s) -
He X.F.,
Feng X.D.,
Li B.B.,
Han S.J.,
Kennedy B. J.,
Lui V.,
Kangura R.,
Low B. L.,
Lu Z. H.
Publication year - 2005
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 - 10.1889/1.2720329
Subject(s) - ohmic contact , cathode , fullerene , materials science , optoelectronics , oled , diode , layer (electronics) , electron , electron transport chain , carbon fibers , nanotechnology , chemistry , composite material , biochemistry , physics , organic chemistry , quantum mechanics , composite number
We report the first organic light emitting diode with a highly efficient electron transport and Ohmic cathode contact layer using nanostructured carbon fullerene (nanOLED). Fullerene or nanobuckyball (NBB) has high mobility for electron transport and forms an Ohmic contact to LiF/Al cathode (nanoCathode). It lowers driving voltage by ∼2V and improves power efficiency by 30∼50%. Due to its robust interface structure, NBB devices show longer lifetime and higher stability. It also provides better tunability for full colour displays compared with devices using Alq as electron transport materials.