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P‐129: Highly Efficient Stacked OLED Employing New Anode‐Cathode Layer
Author(s) -
Sun J. X.,
Zhu X. L.,
Peng H. J.,
Wong M.,
Kwok H. S.
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 - 10.1889/1.2036565
Subject(s) - anode , cathode , oled , materials science , optoelectronics , layer (electronics) , current density , nanotechnology , electrical engineering , chemistry , electrode , physics , engineering , quantum mechanics
Abstract Highly efficient stacked OLEDs have been fabricated using a new anode‐cathode‐layer (ACL) that connects two identical emissive units. The emissive unit consists of NPB/Alq 3 : C545T/BCP or NPB/CBP: Ir(ppy) 3 /BCP. The ACL can effectively function as both the cathode of bottom unit and the anode of top one. The luminous efficiencies are doubled with respect to the single unit device, and are peaked at 22cd/A (driving current density of 7.2mA/cm 2 ) and 60cd/A (1mA/cm 2 ) for C545T‐ and Ir(ppy) 3 ‐based emission, respectively.