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Full‐Range Tunability of Electron and Hole Carrier Mobilities and Density Ratios via Incorporation of Highly Electron‐Deficient Moieties in Poly(phenylene vinylene) Side Chains
Author(s) -
Yu L.S.,
Chen S.A.
Publication year - 2004
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/adma.200306442
Subject(s) - materials science , electron , electron mobility , phenylene , electron transport chain , moiety , range (aeronautics) , work function , side chain , cathode , electron hole , triazole , optoelectronics , photochemistry , polymer chemistry , nanotechnology , polymer , chemistry , organic chemistry , physics , composite material , biochemistry , layer (electronics) , quantum mechanics
The incorporation of a triazole moiety in poly(phenylene vinylene) (see Figure) allows tuning of the ratio of electron flux to hole flux over a broad range. Originally hole‐dominated transport can be turned to electron‐dominated transport. At proper triazole content, electron and hole fluxes are balanced, and the efficiency and brightness of a device with a high work function Al cathode can be improved to the level of low work function Ca.