TY - JOUR
T1 - A facile synthesis of sulfonated poly(diphenylamine) and the application as a novel hole injection layer in polymer light emitting diodes
AU - Li, Chen Yan
AU - Wen, Ten Chin
AU - Guo, Tzung Fang
AU - Hou, Sheng Shu
N1 - Funding Information:
The authors would like to thank Professor Pei-Lin Wu and Ms. Ru-Rong Wu for their helps in interpreting NMR spectra as well as Mr. Po-Chun Hsu for his help in experiments. The financial support by National Science Council of Taiwan under NSC-95-2214-E-006-325 and NSC-95-2221-E-006-409-MY3 is acknowledged.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2008/2/18
Y1 - 2008/2/18
N2 - Water-soluble sulfonated poly(diphenylamine) (SPDPA) was synthesized and applied as a hole injection layer (HIL). It was characterized in terms of 1H NMR, 13C NMR, elemental analysis (EA), UV-vis, Raman, ultraviolet photoelectron spectroscopies (UPS) and TGA thermal stability measurement. The high transparency in visible region and acceptable conductivity were beneficial as HIL material. The topographic image obtained from Atomic Force Microscope shows that the surface of SPDPA-coated indium tin oxide (ITO) is smoother than that of bare ITO. Raman spectra indicate that SPDPA possesses the higher oxidation and doping level due to SO3H group on the phenyl ring, rendering SPDPA the higher work function with 0.35 eV than PDPA from UPS spectra. The electroluminescence efficiency of polymer light emitting diode using poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) as an active layer and SPDPA as HIL can be reached 2.0 cd/A, showing the slightly better performance than that using PEDOT:PSS as HIL.
AB - Water-soluble sulfonated poly(diphenylamine) (SPDPA) was synthesized and applied as a hole injection layer (HIL). It was characterized in terms of 1H NMR, 13C NMR, elemental analysis (EA), UV-vis, Raman, ultraviolet photoelectron spectroscopies (UPS) and TGA thermal stability measurement. The high transparency in visible region and acceptable conductivity were beneficial as HIL material. The topographic image obtained from Atomic Force Microscope shows that the surface of SPDPA-coated indium tin oxide (ITO) is smoother than that of bare ITO. Raman spectra indicate that SPDPA possesses the higher oxidation and doping level due to SO3H group on the phenyl ring, rendering SPDPA the higher work function with 0.35 eV than PDPA from UPS spectra. The electroluminescence efficiency of polymer light emitting diode using poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) as an active layer and SPDPA as HIL can be reached 2.0 cd/A, showing the slightly better performance than that using PEDOT:PSS as HIL.
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U2 - 10.1016/j.polymer.2007.12.031
DO - 10.1016/j.polymer.2007.12.031
M3 - Article
AN - SCOPUS:39049168012
SN - 0032-3861
VL - 49
SP - 957
EP - 964
JO - polymer
JF - polymer
IS - 4
ER -