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Study of 2,6-Linked Quinquepyridine Derivative as Luminescence Materials

Published online by Cambridge University Press:  21 March 2011

Y.J. Fu ,
T.K.S. Wong ,
G.M. Wang ,
X. Hu ,
S. Buddhudu ,
H.X. Zhang ,
Z.S. Gao  and
M.H. Jiang
Y.J. Fu
Affiliation:
Division of Microelectronics, School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798
T.K.S. Wong
Affiliation:
Division of Microelectronics, School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798
G.M. Wang
Affiliation:
Division of Materials Technology, School of Materials Enginerring, Nanyang Technological University, Singapore 639798
X. Hu
Affiliation:
Division of Materials Technology, School of Materials Enginerring, Nanyang Technological University, Singapore 639798
S. Buddhudu
Affiliation:
Division of Microelectronics, School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798
H.X. Zhang
Affiliation:
Division of Microelectronics, School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798
Z.S. Gao
Affiliation:
State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
M.H. Jiang
Affiliation:
State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
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Abstract

Both photoluminescence (PL) and electroluminescence (EL) properties of 6,6””-dimethyl-4', 4”'-diphenyl-2,2':6',2”:6”,2”':6”',2””-quinquepyridine (DMDPQPY), a 2,6-linked oligopy- ridine derivative, have been investigated. Two maxima are observed from its PL spectra in solid state, but only one peak appears in its PL in solutions. Emission from the single layer device with indium-tin-oxide (ITO) and Al as the respective anode and cathode (ITO/DMDPQPY/Al) is very weak, but introduction of a hole transporting layer polyvinylcarbazole (PVK), in the double layer device (ITO/PVK/DMDPQPY/Al), increases the luminance significantly indicating a better charge balance. Two peaks appear in the EL spectra, one at 419 nm and another at 536 nm, ascribed to PVK and DMDPQPY respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 660: Symposia JJ – Organic Electronic & Photonic Materials and Devices , 2000 , JJ5.9
Copyright
Copyright © Materials Research Society 2001

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References

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