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Deep‐Blue OLED Fabrication from Heptazine Columnar Liquid Crystal Based AIE‐Active Sky‐Blue Emitter
Author(s) -
Bala Indu,
Ming Lee,
Yadav Rohit Ashok Kumar,
De Joydip,
Dubey Deepak Kumar,
Kumar Sunil,
Singh Harpreet,
Jou JwoHuei,
Kailasam Kamalakannan,
Pal Santanu Kumar
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801715
Subject(s) - oled , common emitter , dopant , doping , quenching (fluorescence) , materials science , fabrication , optoelectronics , blue light , diode , nanotechnology , fluorescence , optics , medicine , physics , alternative medicine , layer (electronics) , pathology
A newly discovered electron‐deficient s‐Heptazine discotic core has been used for organic light emitting diodes (OLEDs) applications. The compound exhibits aggregation‐induced emission (AIE) characteristic, while most of other discotics reported so far, show aggregation‐caused quenching (ACQ) behavior. It ( Hpz‐3C12 ) shows sky‐blue light emission in a solid state while weakly emissive in the solution state. The solution‐processed OLEDs have been fabricated from Hpz‐3C12 by using host‐guest configuration by doping with different hosts and found to display deep‐blue emission. The device shows the best efficiency with CBP‐host with 3 wt. % dopant ( Hpz‐3C12 ) concentration.