Electroplex as a New Concept of Universal Host for Improved Efficiency and Lifetime in Red, Yellow, Green, and Blue Phosphorescent Organic Light‐Emitting Diodes
Sign Up to like & getrecommendations! Published in 2018 at "Advanced Science"
DOI: 10.1002/advs.201700608
Abstract: Abstract A new concept of host, electroplex host, is developed for high efficiency and long lifetime phosphorescent organic light‐emitting diodes by mixing two host materials generating an electroplex under an electric field. A carbazole‐type host… read more here.
Keywords: phosphorescent organic; organic light; emitting diodes; light emitting ... See more keywords
Ancillary ligand effect with methyl and t-butyl for deep blue and high EQE blue phosphorescent organic light-emitting diodes
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DOI: 10.1016/j.cej.2021.128437
Abstract: Abstract Novel phosphorescent emitters, FIr4mpic and FIr4tpic were designed and prepared synthetically to improve the chromaticity and emission efficiency of FIrpic, one of the main blue phosphor. Apparently, methyl and tert-butyl on 4-position of picolinic… read more here.
Keywords: blue; light emitting; fir4mpic fir4tpic; ancillary ligand ... See more keywords
Derivatives of 2-phenylindole and carbazole as host materials for phosphorescent organic light emitting diodes
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DOI: 10.1016/j.dyepig.2016.09.038
Abstract: Abstract Synthesis and thermal, electrochemical, photophysical and charge-transporting properties of the derivatives of carbazole and 2-phenylindole are reported. Compounds with reactive functional groups are emphasized. Two compounds form molecular glasses with the glass transition temperatures… read more here.
Keywords: carbazole host; phosphorescent organic; organic light; emitting diodes ... See more keywords
Novel spirofluorene/indole/carbazole-based hole transport materials with high triplet energy for efficient green phosphorescent organic light-emitting diodes
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DOI: 10.1016/j.dyepig.2016.10.003
Abstract: Abstract Three novel host materials 9-(4-(5-(4-(9-phenyl-9H-fluoren-9-yl)phenyl)-1H-indol-1-yl)phenyl)-9H-carbazole ( C1 ), 9-(4-(9,9-diphenyl-9H-fluoren-4-yl)-1H-indol-1-yl)-9-phenyl-9H-carbazole ( C2 ) and 9-(4-(5-(9,9-diphenyl-9H-fluoren-2-yl)-1H-indol-1-yl)phenyl)-9H-carbazole ( C3 ) based on spirofluorene, indole and carbazole derivatives have been designed and synthesized. Their thermal, photophysical and electrochemical… read more here.
Keywords: spirofluorene indole; green phosphorescent; phosphorescent organic; carbazole based ... See more keywords
Diphenylphosphine oxide-based host materials for green phosphorescent organic light-emitting devices
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DOI: 10.1016/j.dyepig.2017.07.050
Abstract: Abstract Two novel host materials based on the diphenylphosphine oxide (DPPO) and spirofluorene were designed and facilely synthesized by tuning the ratio of donor spirofluorene units and acceptor DPPO units from 1: 1 to 1:… read more here.
Keywords: phosphorescent organic; organic light; light emitting; diphenylphosphine oxide ... See more keywords
Synthesis and characterization of quinoxaline derivative for high performance phosphorescent organic light-emitting diodes
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DOI: 10.1016/j.dyepig.2018.02.020
Abstract: Abstract A novel bipolar donor-acceptor-donor (D-A-D) type quinoxaline derivative, 2,3-di(9H-carbazol-9-yl)quinoxaline (DCQ) was designed and synthesized. The spectroscopic, thermal, photophysical and electrochemical properties of DCQ were systematically investigated. DCQ was employed as a yellow host material… read more here.
Keywords: phosphorescent; quinoxaline; phosphorescent organic; quinoxaline derivative ... See more keywords
Triarylboryl-substituted carbazoles as bipolar host materials for efficient green phosphorescent organic light-emitting devices
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DOI: 10.1016/j.dyepig.2018.11.042
Abstract: Abstract Two novel bipolar host materials based on carbazole and triarylborane moieties, i.e. B-2CZ and m-B-CZ, are synthesized and characterized. The spatially crowded compound B-2CZ exhibits a high thermal stability (Td > 340 °C) compared to the reported… read more here.
Keywords: organic light; phosphorescent; host materials; phosphorescent organic ... See more keywords
Benzocarbazole and diphenyltriazine derived hosts for red phosphorescent organic light-emitting diodes
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DOI: 10.1016/j.dyepig.2019.107551
Abstract: Abstract A bipolar host design for red phosphorescent organic light-emitting diodes (PhOLEDs) was explored as an objective to improve the external quantum efficiency and device lifetime. Main direction of the host design was to secure… read more here.
Keywords: benzocarbazole diphenyltriazine; phosphorescent organic; light emitting; diphenyltriazine ... See more keywords
Enabling high efficiency and long lifetime of pure blue phosphorescent organic light emitting diodes by simple cyano modified carbazole-based host
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DOI: 10.1016/j.dyepig.2020.109118
Abstract: Abstract Herein, we report two simple and efficient high triplet energy bipolar host materials named 2'-(9H-carbazol-9-yl)-[1,1′-biphenyl]-2-carbonitrile (CzBPCN) and 9-(2′-cyano-[1,1′-biphenyl]-2-yl)-9H-carbazole-3-carbonitrile (CNCzBPCN) by connecting carbazole type donor and cyano acceptor on 2 and 2′ positions of a… read more here.
Keywords: blue phosphorescent; carbazole; organic light; phosphorescent organic ... See more keywords
Influence of the linkage mode and D/A ratio of carbazole/oxadiazole based host materials on phosphorescent organic light-emitting diodes
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DOI: 10.1016/j.jlumin.2017.05.026
Abstract: Abstract In the present study, by combining mCP with oxadiazole through tuning the linkage mode and donor/acceptor (D/A) ratio, six different bipolar host materials, o-mCPOXD, m-mCPOXD, p-mCPOXD, o−2mCPOXD, m−2mCPOXD, and p−2mCPOXD were designed and synthesized.… read more here.
Keywords: linkage mode; host materials; phosphorescent organic; linkage ... See more keywords
Improved efficiency in blue phosphorescent organic light-emitting diodes by the stepwise doping structure
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DOI: 10.1016/j.optmat.2017.02.050
Abstract: Abstract The electro-optical properties of the blue phosphorescent organic light-emitting diodes (PHOLEDs) can be affected by the stepwise doping structure in the emitting layer (EML). A series of multi-EML devices with different doping concentration of… read more here.
Keywords: doping structure; phosphorescent organic; organic light; stepwise doping ... See more keywords