Online citations, reference lists, and bibliographies.

Highly Efficient Electroluminescence From Green‐Light‐Emitting Electrochemical Cells Based On CuI Complexes

Qisheng Zhang, Quanguo Zhou, Yanxiang Cheng, Lixiang Wang, Dongge Ma, Xiabin Jing, Fosong Wang
Published 2006 · Materials Science
Cite This
Download PDF
Analyze on Scholarcy
The complexes [Cu(dnpb)(DPEphos)](+)(X-) (dnpb and DPEphos are 2,9-di-n-butyl-1,10-phenanthroline and bis[2-(diphenyl-phosphino)phenyl]ether, respectively, and X- is BF4-, ClO4-, or PF6-) can form high quality films with photoluminescence quantum yields of up to 71 +/- 7%. Their electroluminescent properties are studied using the device-structure indium tin oxide (ITO)/complex/metal cathiode. The devices emit green light efficiently, with an emission maximum of 523 nm, and work in the mode of light-emitting electrochemical cells. The response time of the devices greatly depends on the driving voltage, the counterions, and the thickness of the complex film. After pre-biasing at 25 V for 40 s, the devices turn on instantly, with a turn-on voltage of ca. 2.9 V. A current efficiency of 56 cd A(-1) and an external quantum efficiency of 16% are realised with Al as the cathode. Using a low-work-function metal as the cathode can significantly enhance the brightness of the device almost without affecting the turn-on voltage and current efficiency. With a Ca cathode, a brightness of 150 cd m(-2) at 6 V and 4100 cd m(-2) at 25 V is demonstrated. The electroluminescent performance of these types of complexes is among the best so far for transition metal complexes with counterions.

This paper is referenced by
White Light‐Emitting Electrochemical Cells Based on Deep‐Red Cu(I) Complexes
Elisa Fresta (2019)
Synthesis, structure, and photophysics of copper(i) triphenylphosphine complexes with functionalized 3-(2'-pyrimidinyl)-1,2,4-triazole ligands.
Jing-Lin Chen (2017)
Stabilisation effects of phosphane ligands in the homogeneous approach of sunlight induced hydrogen production.
Christof Strabler (2017)
Optoelectronic properties of green and yellow light-emitting electrochemical cells based on cationic iridium complexes
Chozhidakath Damodharan Sunesh (2013)
Tailoring carrier injection efficiency to improve the carrier balance of solid-state light-emitting electrochemical cells.
Chih-Teng Liao (2012)
Efficient blue organic light-emitting diodes employing thermally activated delayed fluorescence
Qisheng Zhang (2014)
Copper(I) complexes bases on a new indazol-4,7-dione ligand
Manuel A. Escobar (2013)
Photophysical properties of copper(I) complexes containing pyrazine-fused phenanthroline ligands: a joint experimental and theoretical investigation
Shengxian Xu (2015)
Structural diversity of copper(I) complexes formed by pyrrole- and dipyrrolylmethane-based diphosphine ligands with cu-X···HN hydrogen bonds.
Shanish Kumar (2014)
Facile synthesis and characterization of iridium(III) complexes containing an N-ethylcarbazole–thiazole main ligand using a tandem reaction for solution processed phosphorescent organic light-emitting diodes
Thota Giridhar (2013)
Phosphorescent Cationic Au4Ag2 Alkynyl Cluster Complexes for Efficient Solution‐Processed Organic Light‐Emitting Diodes
Liang-Jin Xu (2015)
OLED fundamentals : materials, devices, and processing of organic light-emitting diodes
Daniel J. Gaspar (2015)
Highly Efficient Thermally Activated Delayed Fluorescence in Dinuclear Ag(I) Complexes with a Bis-Bidentate Tetraphosphane Bridging Ligand.
Jin Chen (2016)
A microporous cationic metal–organic framework constructed from metallamacrocycle-based nanocages: structures and luminescence properties
Zhenlan Fang (2014)
Stimuli-responsive pyrimidine ring rotation in copper complexes for switching their physical properties.
Michihiro Nishikawa (2013)
Positively Charged Iridium(III) Triazole Derivatives as Blue Emitters for Light-Emitting Electrochemical Cells
Mathias Mydlak (2010)
Efficient and color-stable solid-state white light-emitting electrochemical cells employing red color conversion layers
Hung-Bao Wu (2012)
Anionic iridium complexes for solid state light-emitting electrochemical cells
Hsiao-Fan Chen (2012)
Efficient orange-red phosphorescent organic light-emitting diodes using an in situ synthesized copper(I) complex as the emitter
Feng Ru Wei (2014)
Triazole-directed hydrogen-bonded structures of cationic iridium(III) complexes
Jeremy M Rawson (2014)
[6-(4-Bromophenyl)-2,2′-bipyridine-κ2 N,N′](tricyclohexylphosphine-κP)copper(I) tetrafluoridoborate
Xi-Long Peng (2010)
Novel luminescent iminephosphine complex of copper(I) with high photochemical and electrochemical stability.
L. Q. Qin (2009)
Theoretical study of radiative and nonradiative decay rates for Cu(i) complexes with double heteroleptic ligands.
Yuannan Chen (2018)
Synthesis of heteroleptic iridium complexes with sterically hindered methyl groups on pyrazole ligands for efficient yellow and green light-emitting electrochemical cells
Chozhidakath Damodharan Sunesh (2016)
Copper(I) complexes of phenanthrolineimidazole ligands: structures, photophysical properties, and quantum chemical studies
Shengxian Xu (2015)
Application of neutral d10 coinage metal complexes with an anionic bidentate ligand in delayed fluorescence-type organic light-emitting diodes
Masahisa Osawa (2013)
Photophysical properties and stability of binuclear emissive Copper(I) complexes Co-deposited with CuX (X = Cl, Br, I) and aza-9,9′-spirobifluorenes
Lianqiao Yang (2019)
Designing the Next Generation of Light-Emitting Electrochemical Cells
Michael Dr. Weber (2013)
Phosphorescent Cu(I) complexes based on bis(pyrazol-1-yl-methyl)-pyridine derivatives for organic light-emitting diodes
Fengshou Wu (2015)
Copper(I) complexes as alternatives to iridium(III) complexes for highly efficient oxygen sensing.
Santiago Medina-Rodríguez (2015)
Improving the carrier balance of light-emitting electrochemical cells based on ionic transition metal complexes.
Hai-Ching Su (2015)
E-type delayed fluorescence of a phosphine-supported Cu2(mu-NAr2)2 diamond core: harvesting singlet and triplet excitons in OLEDs.
Joseph C. Deaton (2010)
See more
Semantic Scholar Logo Some data provided by SemanticScholar