Dipyrazolopyridine derivatives as bright blue electroluminescent materials
Identifieur interne : 002004 ( Chine/Analysis ); précédent : 002003; suivant : 002005Dipyrazolopyridine derivatives as bright blue electroluminescent materials
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Abstract
Very bright blue organic light emitting diodes were fabricated using highly fluorescent dipyrazolopyridine derivatives, 4-(4-substituted phenyl)-1,7-diphenyl-3,5-dimethyl-1,7dihydrodipyrazolo[3,4-b,4′,3′-e]pyridine (PAP-X, XCN, Ph, and OMe), as emitter by doping the dye in an electron-transporting host, 2,2′,2========Prime;-(1,3,5-benzenetriyl)tris-[1-phenyl-1H-benzimidazole] (TPBI). Two hole-transporting layers, 4,4′-bis[N-(1-naphthyl-1-)-N-phenyl-amino]-biphenyl (NPB) and 4,4′-dicarbazolyl-1,1′-biphenyl (CBP) were used to achieve the emission from PAP-X. The devices with a general configuration of indium tin oxide/NPB/CBP/TPBI:PAP(2%)/Mg:Ag showed a bright blue emission. The PAP-CN-based device is exceptionally good, with a brightness of 11200 cd/m2 at 14.2 V and the peak external quantum efficiency of 3.2%. The efficiency is the highest for the blue emission. © 2000 American Institute of Physics.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Dipyrazolopyridine derivatives as bright blue electroluminescent materials</title><author><name sortKey="Tao, Y T" uniqKey="Tao Y">Y. T. Tao</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Chemistry, Academia Sinica, Taipei, Taiwan, Republic of China</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Institute of Chemistry, Academia Sinica, Taipei, Taiwan</wicri:regionArea><wicri:noRegion>Taiwan</wicri:noRegion></affiliation></author><author><name sortKey="Balasubramaniam, E" uniqKey="Balasubramaniam E">E. Balasubramaniam</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Chemistry, Academia Sinica, Taipei, Taiwan, Republic of China</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Institute of Chemistry, Academia Sinica, Taipei, Taiwan</wicri:regionArea><wicri:noRegion>Taiwan</wicri:noRegion></affiliation></author><author><name sortKey="Danel, A" uniqKey="Danel A">A. Danel</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, University of Agriculture, 31 120 Cracow, Poland</s1><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country xml:lang="fr">Pologne</country><wicri:regionArea>Department of Chemistry, University of Agriculture, 31 120 Cracow</wicri:regionArea><wicri:noRegion>31 120 Cracow</wicri:noRegion></affiliation></author><author><name sortKey="Tomasik, P" uniqKey="Tomasik P">P. Tomasik</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, University of Agriculture, 31 120 Cracow, Poland</s1><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country xml:lang="fr">Pologne</country><wicri:regionArea>Department of Chemistry, University of Agriculture, 31 120 Cracow</wicri:regionArea><wicri:noRegion>31 120 Cracow</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">00-0343646</idno><date when="2000-08-14">2000-08-14</date><idno type="stanalyst">PASCAL 00-0343646 AIP</idno><idno type="RBID">Pascal:00-0343646</idno><idno type="wicri:Area/Main/Corpus">012A42</idno><idno type="wicri:Area/Main/Repository">011D45</idno><idno type="wicri:Area/Chine/Extraction">002004</idno></publicationStmt><seriesStmt><idno type="ISSN">0003-6951</idno><title level="j" type="abbreviated">Appl. phys. lett.</title><title level="j" type="main">Applied physics letters</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Brightness</term><term>Electroluminescence</term><term>Experimental study</term><term>Light emitting diodes</term><term>Organic compounds</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>8560J</term><term>7860F</term><term>7866Q</term><term>Etude expérimentale</term><term>Composé organique</term><term>Diode électroluminescente</term><term>Brillance</term><term>Electroluminescence</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Very bright blue organic light emitting diodes were fabricated using highly fluorescent dipyrazolopyridine derivatives, 4-(4-substituted phenyl)-1,7-diphenyl-3,5-dimethyl-1,7dihydrodipyrazolo[3,4-b,4′,3′-e]pyridine (PAP-X, XCN, Ph, and OMe), as emitter by doping the dye in an electron-transporting host, 2,2′,2========Prime;-(1,3,5-benzenetriyl)tris-[1-phenyl-1H-benzimidazole] (TPBI). Two hole-transporting layers, 4,4′-bis[N-(1-naphthyl-1-)-N-phenyl-amino]-biphenyl (NPB) and 4,4′-dicarbazolyl-1,1′-biphenyl (CBP) were used to achieve the emission from PAP-X. The devices with a general configuration of indium tin oxide/NPB/CBP/TPBI:PAP(2%)/Mg:Ag showed a bright blue emission. The PAP-CN-based device is exceptionally good, with a brightness of 11200 cd/m2 at 14.2 V and the peak external quantum efficiency of 3.2%. The efficiency is the highest for the blue emission. © 2000 American Institute of Physics.</div> </front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0003-6951</s0></fA01><fA02 i1="01"><s0>APPLAB</s0></fA02><fA03 i2="1"><s0>Appl. phys. lett.</s0></fA03><fA05><s2>77</s2></fA05><fA06><s2>7</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Dipyrazolopyridine derivatives as bright blue electroluminescent materials</s1></fA08><fA11 i1="01" i2="1"><s1>TAO (Y. T.)</s1></fA11><fA11 i1="02" i2="1"><s1>BALASUBRAMANIAM (E.)</s1></fA11><fA11 i1="03" i2="1"><s1>DANEL (A.)</s1></fA11><fA11 i1="04" i2="1"><s1>TOMASIK (P.)</s1></fA11><fA14 i1="01"><s1>Institute of Chemistry, Academia Sinica, Taipei, Taiwan, Republic of China</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Chemistry, University of Agriculture, 31 120 Cracow, Poland</s1><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA20><s1>933-935</s1></fA20><fA21><s1>2000-08-14</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>10020</s2></fA43><fA44><s0>8100</s0><s1>© 2000 American Institute of Physics. All rights reserved.</s1></fA44><fA47 i1="01" i2="1"><s0>00-0343646</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Applied physics letters</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>Very bright blue organic light emitting diodes were fabricated using highly fluorescent dipyrazolopyridine derivatives, 4-(4-substituted phenyl)-1,7-diphenyl-3,5-dimethyl-1,7dihydrodipyrazolo[3,4-b,4′,3′-e]pyridine (PAP-X, XCN, Ph, and OMe), as emitter by doping the dye in an electron-transporting host, 2,2′,2========Prime;-(1,3,5-benzenetriyl)tris-[1-phenyl-1H-benzimidazole] (TPBI). Two hole-transporting layers, 4,4′-bis[N-(1-naphthyl-1-)-N-phenyl-amino]-biphenyl (NPB) and 4,4′-dicarbazolyl-1,1′-biphenyl (CBP) were used to achieve the emission from PAP-X. The devices with a general configuration of indium tin oxide/NPB/CBP/TPBI:PAP(2%)/Mg:Ag showed a bright blue emission. The PAP-CN-based device is exceptionally good, with a brightness of 11200 cd/m2 at 14.2 V and the peak external quantum efficiency of 3.2%. 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