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Interfacial Microstructure Function in Organic Light‐Emitting Diodes: Assembled Tetraaryldiamine and Copper Phthalocyanine Interlayers
Author(s) -
Cui J.,
Huang Q.,
Veinot J.G.C.,
Yan H.,
Marks T.J.
Publication year - 2002
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(20020418)14:8<565::aid-adma565>3.0.co;2-3
Subject(s) - materials science , oled , siloxane , bilayer , optoelectronics , annealing (glass) , copper , microstructure , thin film , chemical engineering , nanotechnology , polymer , composite material , layer (electronics) , metallurgy , membrane , biology , engineering , genetics
Drastically increased OLED device luminance (up to 15 000 cd/m 2 ) and enhanced quantum efficiency (6×) are achieved by spin‐coating a siloxane‐derivatized hole injector (TPD‐Si 2 ) onto an ITO surface. The silyl groups promote ITO–TPD interfacial cohesion, thus enabling more efficient hole injection. The Figure shows a polarized optical image of the TPD film morphology after annealing the bilayer structure (see also inside front cover).