Electroluminescent devices based on rare-earth tetrakis β-diketonate complexes
Identifieur interne : 006843 ( Main/Repository ); précédent : 006842; suivant : 006844Electroluminescent devices based on rare-earth tetrakis β-diketonate complexes
Auteurs : RBID : Pascal:09-0076813Descripteurs français
- Pascal (Inist)
- Dispositif électroluminescent, Photoluminescence, Electroluminescence, Europium, Addition europium, Ligand, Ion sodium, Transfert énergie, Rendement quantique, Couche mince, Evaporation, Vide poussé, Système vide, Diode électroluminescente, Complexe de lanthanide, Oxyde d'indium, Oxyde d'étain, Aluminium, Emission optique, Porteur charge, Exciton, 7855, 7860F, 8560J.
- Wicri :
- concept : Aluminium.
English descriptors
- KwdEn :
- Aluminium, Charge carriers, Electroluminescence, Electroluminescent devices, Energy transfer, Europium, Europium additions, Evaporation, Excitons, High vacuum, Indium oxide, Ligands, Light emission, Light emitting diodes, Photoluminescence, Quantum yield, Rare earth complexes, Sodium ions, Thin films, Tin oxide, Vacuum systems.
Abstract
In this paper the synthesis, photoluminescence and electroluminescence investigation of the novel tetrakis β-diketonate of rare-earth complexes such as, M[Eu(dbm)4] and M[Tb(acac)4] with a variety of cationic ligands, M = Li+, Na+ and K+ have been investigated. The emission spectra of the Eu3+ and Tb3+ complexes displayed characteristic narrow bands arising from intraconfigurational transitions of trivalent rare-earth ions and exhibited red color emission for the Eu3+ ion (5D0→7Fj, J= 0-6) and green for the Tb3+ ion (5D4→7Fj, J= 6-0). The lack of the broaden emission bands arising from the ligands suggests the efficient intramolecular energy transfer from the dbm and acac ligands to Eu3+ and Tb3+ ions, respectively. In accordance to the expected, the values of PL quantum efficiency (η) of the emitting 5D0 state of the tetrakis(β-diketonate) complexes of Eu3+ were higher compared with those tris-complexes. Therefore, organic electroluminescent (EL) devices were fabricated with the structure as follows: indium tin oxide (ITO)/hole transport layer (HTL) NPB or MTCD/emitter layer M[RE(β-diketonate)4] complexes)/ Aluminum (Al). All the films were deposited by thermal evaporation carried out in a high vacuum environment system. The OLED light emission was independent of driving voltage, indicating that the combination of charge carriers generates excitons within the M[RE(β-diketonate)4] layers, and the energy is efficiently transferred to RE3+ ion. As a best result, a pure red and green electroluminescent emission was observed from the Eu3+ and Tb3+ devices, confirmed by (X,Y) color coordinates.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Electroluminescent devices based on rare-earth tetrakis β-diketonate complexes</title><author><name sortKey="Quirino, W G" uniqKey="Quirino W">W. G. Quirino</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CeDO-Centro de Dispositivos Orgânicos, Dimat-Inmetro, 25250-020, Duque de Caxias</s1><s2>Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>Rio de Janeiro, RJ</wicri:noRegion></affiliation></author><author><name sortKey="Legnani, C" uniqKey="Legnani C">C. Legnani</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CeDO-Centro de Dispositivos Orgânicos, Dimat-Inmetro, 25250-020, Duque de Caxias</s1><s2>Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>Rio de Janeiro, RJ</wicri:noRegion></affiliation></author><author><name sortKey="Dos Santos, R M B" uniqKey="Dos Santos R">R. M. B. Dos Santos</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LOEM-Laboratório de Optoeletrônica Molecular, Physics Department, PUC-Rio</s1><s2>22452-970, Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>22452-970, Rio de Janeiro, RJ</wicri:noRegion></affiliation></author><author><name sortKey="Teixeira, K C" uniqKey="Teixeira K">K. C. Teixeira</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CeDO-Centro de Dispositivos Orgânicos, Dimat-Inmetro, 25250-020, Duque de Caxias</s1><s2>Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>Rio de Janeiro, RJ</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LOEM-Laboratório de Optoeletrônica Molecular, Physics Department, PUC-Rio</s1><s2>22452-970, Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>22452-970, Rio de Janeiro, RJ</wicri:noRegion></affiliation></author><author><name sortKey="Cremona, M" uniqKey="Cremona M">M. Cremona</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CeDO-Centro de Dispositivos Orgânicos, Dimat-Inmetro, 25250-020, Duque de Caxias</s1><s2>Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>Rio de Janeiro, RJ</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LOEM-Laboratório de Optoeletrônica Molecular, Physics Department, PUC-Rio</s1><s2>22452-970, Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>22452-970, Rio de Janeiro, RJ</wicri:noRegion></affiliation></author><author><name sortKey="Guedes, M A" uniqKey="Guedes M">M. A. Guedes</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CeDO-Centro de Dispositivos Orgânicos, Dimat-Inmetro, 25250-020, Duque de Caxias</s1><s2>Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>Rio de Janeiro, RJ</wicri:noRegion></affiliation></author><author><name sortKey="Brito, H F" uniqKey="Brito H">H. F. Brito</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Instituto de Química, Departamento de Quimica Fundamental, USP</s1><s2>05599-970, São Paulo, SP</s2><s3>BRA</s3><sZ>7 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>05599-970, São Paulo, SP</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">09-0076813</idno><date when="2008">2008</date><idno type="stanalyst">PASCAL 09-0076813 INIST</idno><idno type="RBID">Pascal:09-0076813</idno><idno type="wicri:Area/Main/Corpus">005C45</idno><idno type="wicri:Area/Main/Repository">006843</idno></publicationStmt><seriesStmt><idno type="ISSN">0040-6090</idno><title level="j" type="abbreviated">Thin solid films</title><title level="j" type="main">Thin solid films</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminium</term><term>Charge carriers</term><term>Electroluminescence</term><term>Electroluminescent devices</term><term>Energy transfer</term><term>Europium</term><term>Europium additions</term><term>Evaporation</term><term>Excitons</term><term>High vacuum</term><term>Indium oxide</term><term>Ligands</term><term>Light emission</term><term>Light emitting diodes</term><term>Photoluminescence</term><term>Quantum yield</term><term>Rare earth complexes</term><term>Sodium ions</term><term>Thin films</term><term>Tin oxide</term><term>Vacuum systems</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Dispositif électroluminescent</term><term>Photoluminescence</term><term>Electroluminescence</term><term>Europium</term><term>Addition europium</term><term>Ligand</term><term>Ion sodium</term><term>Transfert énergie</term><term>Rendement quantique</term><term>Couche mince</term><term>Evaporation</term><term>Vide poussé</term><term>Système vide</term><term>Diode électroluminescente</term><term>Complexe de lanthanide</term><term>Oxyde d'indium</term><term>Oxyde d'étain</term><term>Aluminium</term><term>Emission optique</term><term>Porteur charge</term><term>Exciton</term><term>7855</term><term>7860F</term><term>8560J</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Aluminium</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this paper the synthesis, photoluminescence and electroluminescence investigation of the novel tetrakis β-diketonate of rare-earth complexes such as, M[Eu(dbm)<sub>4</sub>] and M[Tb(acac)<sub>4</sub>] with a variety of cationic ligands, M = Li<sup>+</sup>, Na<sup>+</sup> and K<sup>+</sup> have been investigated. The emission spectra of the Eu<sup>3+</sup> and Tb<sup>3+</sup> complexes displayed characteristic narrow bands arising from intraconfigurational transitions of trivalent rare-earth ions and exhibited red color emission for the Eu<sup>3+</sup> ion (<sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>j,</sub> J= 0-6) and green for the Tb<sup>3+</sup> ion (<sup>5</sup>D<sub>4</sub>→<sup>7</sup>F<sub>j,</sub> J= 6-0). The lack of the broaden emission bands arising from the ligands suggests the efficient intramolecular energy transfer from the dbm and acac ligands to Eu<sup>3+</sup> and Tb<sup>3+</sup> ions, respectively. In accordance to the expected, the values of PL quantum efficiency (η) of the emitting <sup>5</sup>D<sub>0</sub> state of the tetrakis(β-diketonate) complexes of Eu<sup>3+</sup> were higher compared with those tris-complexes. Therefore, organic electroluminescent (EL) devices were fabricated with the structure as follows: indium tin oxide (ITO)/hole transport layer (HTL) NPB or MTCD/emitter layer M[RE(β-diketonate)<sub>4</sub>] complexes)/ Aluminum (Al). All the films were deposited by thermal evaporation carried out in a high vacuum environment system. The OLED light emission was independent of driving voltage, indicating that the combination of charge carriers generates excitons within the M[RE(β-diketonate)<sub>4</sub>] layers, and the energy is efficiently transferred to RE<sup>3+</sup> ion. As a best result, a pure red and green electroluminescent emission was observed from the Eu<sup>3+</sup> and Tb<sup>3+</sup> devices, confirmed by (X,Y) color coordinates.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0040-6090</s0></fA01><fA02 i1="01"><s0>THSFAP</s0></fA02><fA03 i2="1"><s0>Thin solid films</s0></fA03><fA05><s2>517</s2></fA05><fA06><s2>3</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Electroluminescent devices based on rare-earth tetrakis β-diketonate complexes</s1></fA08><fA09 i1="01" i2="1" l="ENG"><s1>Proceedings of the 35th International Conference on Metallurgical Coatings and Thin Films (ICMCTF), San Diego, California, April 28-May 2, 2008</s1></fA09><fA11 i1="01" i2="1"><s1>QUIRINO (W. G.)</s1></fA11><fA11 i1="02" i2="1"><s1>LEGNANI (C.)</s1></fA11><fA11 i1="03" i2="1"><s1>DOS SANTOS (R. M. B.)</s1></fA11><fA11 i1="04" i2="1"><s1>TEIXEIRA (K. C.)</s1></fA11><fA11 i1="05" i2="1"><s1>CREMONA (M.)</s1></fA11><fA11 i1="06" i2="1"><s1>GUEDES (M. A.)</s1></fA11><fA11 i1="07" i2="1"><s1>BRITO (H. F.)</s1></fA11><fA12 i1="01" i2="1"><s1>PAULEAU (Yves)</s1><s9>ed.</s9></fA12><fA12 i1="02" i2="1"><s1>MAYRHOFER (Paul)</s1><s9>ed.</s9></fA12><fA12 i1="03" i2="1"><s1>ERDEMIR (Ali)</s1><s9>ed.</s9></fA12><fA12 i1="04" i2="1"><s1>INSPEKTOR (Aharon)</s1><s9>ed.</s9></fA12><fA12 i1="05" i2="1"><s1>RAMANATH (Ganapathiraman)</s1><s9>ed.</s9></fA12><fA14 i1="01"><s1>CeDO-Centro de Dispositivos Orgânicos, Dimat-Inmetro, 25250-020, Duque de Caxias</s1><s2>Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="02"><s1>LOEM-Laboratório de Optoeletrônica Molecular, Physics Department, PUC-Rio</s1><s2>22452-970, Rio de Janeiro, RJ</s2><s3>BRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="03"><s1>Instituto de Química, Departamento de Quimica Fundamental, USP</s1><s2>05599-970, São Paulo, SP</s2><s3>BRA</s3><sZ>7 aut.</sZ></fA14><fA20><s1>1096-1100</s1></fA20><fA21><s1>2008</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>13597</s2><s5>354000184599910170</s5></fA43><fA44><s0>0000</s0><s1>© 2009 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>25 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>09-0076813</s0></fA47><fA60><s1>P</s1><s2>C</s2></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Thin solid films</s0></fA64><fA66 i1="01"><s0>CHE</s0></fA66><fC01 i1="01" l="ENG"><s0>In this paper the synthesis, photoluminescence and electroluminescence investigation of the novel tetrakis β-diketonate of rare-earth complexes such as, M[Eu(dbm)<sub>4</sub>] and M[Tb(acac)<sub>4</sub>] with a variety of cationic ligands, M = Li<sup>+</sup>, Na<sup>+</sup> and K<sup>+</sup> have been investigated. The emission spectra of the Eu<sup>3+</sup> and Tb<sup>3+</sup> complexes displayed characteristic narrow bands arising from intraconfigurational transitions of trivalent rare-earth ions and exhibited red color emission for the Eu<sup>3+</sup> ion (<sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>j,</sub> J= 0-6) and green for the Tb<sup>3+</sup> ion (<sup>5</sup>D<sub>4</sub>→<sup>7</sup>F<sub>j,</sub> J= 6-0). The lack of the broaden emission bands arising from the ligands suggests the efficient intramolecular energy transfer from the dbm and acac ligands to Eu<sup>3+</sup> and Tb<sup>3+</sup> ions, respectively. In accordance to the expected, the values of PL quantum efficiency (η) of the emitting <sup>5</sup>D<sub>0</sub> state of the tetrakis(β-diketonate) complexes of Eu<sup>3+</sup> were higher compared with those tris-complexes. Therefore, organic electroluminescent (EL) devices were fabricated with the structure as follows: indium tin oxide (ITO)/hole transport layer (HTL) NPB or MTCD/emitter layer M[RE(β-diketonate)<sub>4</sub>] complexes)/ Aluminum (Al). All the films were deposited by thermal evaporation carried out in a high vacuum environment system. The OLED light emission was independent of driving voltage, indicating that the combination of charge carriers generates excitons within the M[RE(β-diketonate)<sub>4</sub>] layers, and the energy is efficiently transferred to RE<sup>3+</sup> ion. As a best result, a pure red and green electroluminescent emission was observed from the Eu<sup>3+</sup> and Tb<sup>3+</sup> devices, confirmed by (X,Y) color coordinates.</s0></fC01><fC02 i1="01" i2="3"><s0>001B70H55</s0></fC02><fC02 i1="02" i2="3"><s0>001B70H60F</s0></fC02><fC02 i1="03" i2="X"><s0>001D03F15</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Dispositif électroluminescent</s0><s5>01</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Electroluminescent devices</s0><s5>01</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Photoluminescence</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Photoluminescence</s0><s5>02</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Electroluminescence</s0><s5>03</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Electroluminescence</s0><s5>03</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Europium</s0><s2>NC</s2><s5>04</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Europium</s0><s2>NC</s2><s5>04</s5></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Addition europium</s0><s5>05</s5></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Europium additions</s0><s5>05</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Ligand</s0><s5>06</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Ligands</s0><s5>06</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Ion sodium</s0><s2>NC</s2><s5>07</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Sodium ions</s0><s2>NC</s2><s5>07</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Transfert énergie</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Energy transfer</s0><s5>08</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Rendement quantique</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Quantum yield</s0><s5>09</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Couche mince</s0><s5>10</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Thin films</s0><s5>10</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Evaporation</s0><s5>11</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Evaporation</s0><s5>11</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Vide poussé</s0><s5>12</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>High vacuum</s0><s5>12</s5></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Système vide</s0><s5>13</s5></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Vacuum systems</s0><s5>13</s5></fC03><fC03 i1="14" i2="3" l="FRE"><s0>Diode électroluminescente</s0><s5>14</s5></fC03><fC03 i1="14" i2="3" l="ENG"><s0>Light emitting diodes</s0><s5>14</s5></fC03><fC03 i1="15" i2="3" l="FRE"><s0>Complexe de lanthanide</s0><s5>15</s5></fC03><fC03 i1="15" i2="3" l="ENG"><s0>Rare earth complexes</s0><s5>15</s5></fC03><fC03 i1="16" i2="X" l="FRE"><s0>Oxyde d'indium</s0><s5>16</s5></fC03><fC03 i1="16" i2="X" l="ENG"><s0>Indium oxide</s0><s5>16</s5></fC03><fC03 i1="16" i2="X" l="SPA"><s0>Indio óxido</s0><s5>16</s5></fC03><fC03 i1="17" i2="X" l="FRE"><s0>Oxyde d'étain</s0><s5>17</s5></fC03><fC03 i1="17" i2="X" l="ENG"><s0>Tin oxide</s0><s5>17</s5></fC03><fC03 i1="17" i2="X" l="SPA"><s0>Estaño óxido</s0><s5>17</s5></fC03><fC03 i1="18" i2="3" l="FRE"><s0>Aluminium</s0><s2>NC</s2><s5>18</s5></fC03><fC03 i1="18" i2="3" l="ENG"><s0>Aluminium</s0><s2>NC</s2><s5>18</s5></fC03><fC03 i1="19" i2="X" l="FRE"><s0>Emission optique</s0><s5>29</s5></fC03><fC03 i1="19" i2="X" l="ENG"><s0>Light emission</s0><s5>29</s5></fC03><fC03 i1="19" i2="X" l="SPA"><s0>Emisión óptica</s0><s5>29</s5></fC03><fC03 i1="20" i2="3" l="FRE"><s0>Porteur charge</s0><s5>30</s5></fC03><fC03 i1="20" i2="3" l="ENG"><s0>Charge carriers</s0><s5>30</s5></fC03><fC03 i1="21" i2="3" l="FRE"><s0>Exciton</s0><s5>31</s5></fC03><fC03 i1="21" i2="3" l="ENG"><s0>Excitons</s0><s5>31</s5></fC03><fC03 i1="22" i2="3" l="FRE"><s0>7855</s0><s4>INC</s4><s5>71</s5></fC03><fC03 i1="23" i2="3" l="FRE"><s0>7860F</s0><s4>INC</s4><s5>72</s5></fC03><fC03 i1="24" i2="3" l="FRE"><s0>8560J</s0><s4>INC</s4><s5>73</s5></fC03><fN21><s1>061</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA><pR><fA30 i1="01" i2="1" l="ENG"><s1>International Conference on Metallurgical Coatings and Thin Films (ICMCTF)</s1><s2>35</s2><s3>San Diego, California USA</s3><s4>2008-04-28</s4></fA30></pR></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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