Instant Low‐Temperature Cross‐Linking of Poly( N ‐vinylcarbazole) for Solution‐Processed Multilayer Blue Phosphorescent Organic Light‐Emitting Devices | Zendy

Aizawa Naoya | Zendy; Pu YongJin | Zendy; Chiba Takayuki | Zendy; Kawata So | Zendy; Sasabe Hisahiro | Zendy; Kido Junji | Zendy

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Instant Low‐Temperature Cross‐Linking of Poly( N ‐vinylcarbazole) for Solution‐Processed Multilayer Blue Phosphorescent Organic Light‐Emitting Devices

Author(s) -

Aizawa Naoya,

Pu YongJin,

Chiba Takayuki,

Kawata So,

Sasabe Hisahiro,

Kido Junji

Publication year - 2014

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.201402726

Subject(s) - materials science , oled , annealing (glass) , phosphorescence , solution process , brightness , optoelectronics , photochemistry , solvent , quantum efficiency , chemical engineering , nanotechnology , optics , fluorescence , organic chemistry , composite material , chemistry , layer (electronics) , physics , engineering

Poly( N ‐vinylcarbazole) undergoes cross‐linking to highly solvent‐resistant films through an oxidative coupling reaction, for which an annealing process takes only 3 min at 110 °C. This reaction allows the construction of a solution‐processed multilayer OLED without a time‐consuming annealing process. The maximum external quantum efficiency reaches 18%, and remains at 17%, even at a high brightness of 10 000 cd m −2 for all‐solution‐processed blue OLEDs.

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