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Novel Hole‐Transport Material for Efficient Polymer Light‐Emitting Diodes by Photoreaction
Author(s) -
Kimoto Atsushi,
Cho JunSang,
Ito Kiyoshi,
Aoki Daigo,
Miyake Tohru,
Yamamoto Kimihisa
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200400657
Subject(s) - pedot:pss , electroluminescence , dendrimer , materials science , polymer , carbazole , layer (electronics) , toluene , photochemistry , diode , oled , optoelectronics , polymer chemistry , chemical engineering , chemistry , nanotechnology , organic chemistry , composite material , engineering
Summary: The photo‐crosslinking of carbazole dendrimers was analyzed by UV and IR spectroscopic methods. Photoirradiation results in the formation of a film that is insoluble in toluene and benzene. Time‐of‐flight mass spectrometry studies revealed that the photoirradiation lead to an oligomerization of the dendrimer through crosslinking. The resulting insoluble dendrimer film could be applied as a hole‐transport layer in efficient polymer electroluminescence devices (PLEDs).Luminance‐voltage characteristics for PLEDs wherein PEDOT:PSS and CbzG3 complex with SnCl 2 were employed as the hole transport layer (ITO/HTL/EML/Ca/Ag).