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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 3, Iss. 2 — Jun. 1, 2007
  • pp: 211–224

Polymer Light-Emitting Electrochemical Cells for High-Efficiency Low-Voltage Electroluminescent Devices

Qingjiang Sun, Yongfang Li, and Qibing Pei

Journal of Display Technology, Vol. 3, Issue 2, pp. 211-224 (2007)


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Abstract

Organic light-emitting devices exhibiting high power conversion efficiency and long operating lifetime may potentially be achieved with the polymer light-emitting electrochemical cell (LEC) configuration. An LEC device typically uses a thin layer of conjugated polymer sandwiched between two contact electrodes. The polymer layer contains an ionically conductive species that are essential in the formation of a light-emitting p-i-n junction. LEC devices are characterized with balanced electron and hole injections, high current density at relatively low bias voltages (2–4 V), and high electroluminescent power efficiency. We will describe the working mechanism of the LECs and review the recent developments in LEC materials, device fabrication and performance. Among the important developments are planar (surface-typed) LECs, bilayer LECs that emit different colors at forward and reverse biases, frozen p-i-n junction LECs that functions like diodes, and phosphorescent LECs. Extensive efforts have been made to improve the LEC performance by controlling the blend morphology, including the use of bipolar surfactant additives and new electrolytes, the synthesis of conjugated polymers with ion-transporting main chain segments or side groups and polyelectrolyte. Degradation mechanisms that limit the lifetime of the LECs will also be discussed.

© 2007 IEEE

Citation
Qingjiang Sun, Yongfang Li, and Qibing Pei, "Polymer Light-Emitting Electrochemical Cells for High-Efficiency Low-Voltage Electroluminescent Devices," J. Display Technol. 3, 211-224 (2007)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-3-2-211


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References

  1. J. W. Blatchford, A. J. Epstein, "Resource letter ERA-1: Electronic polymers and their applications," Amer. J. Phys. 64, 120-135 (1996).
  2. J. H. Burroughes, D. D. C. Bradley, A. R. Brown, R. N. Marks, K. Mackay, R. H. Friend, P. L. Burn, A. B. Holmes, "Light-emitting diode based on conjugated polymers," Nature 347, 539-541 (1990).
  3. D. Braun, A. J. Heeger, "Visible-light emission from semiconducting polymer diodes," Appl. Phys. Lett. 58, 1982-1984 (1991).
  4. G. Gustafsson, Y. Cao, G. M. Treacy, F. Flavetter, N. Colaneri, A. J. Heeger, "Flexible light-emitting diodes made from soluble conducting polymer," Nature 357, 477-479 (1992).
  5. G. Yu, J. Gao, J. C. Hummelen, F. Wudl, A. J. Heeger, "Polymer photovoltaic cells—Enhanced efficiencies via a network of internal donor-acceptor heterojunctions," Science 270, 1789-1791 (1995).
  6. J. H. Burroughes, C. A. Jonnes, R. H. Friend, "New semiconductor device physics in polymer diodes and transistors," Nature 335, 137-141 (1988).
  7. Q. B. Pei, G. Yu, C. Zhang, Y. Yang, A. J. Heeger, "Polymer light-emitting electrochemical-cells," Science 269, 1086-1088 (1995).
  8. Q. B. Pei, Y. Yang, G. Yu, C. Zhang, A. J. Heeger, "Polymer light-emitting electrochemical cells: In situ formation of a light-emitting p-n junction," J. Am. Chem. Soc. 118, 3922-3929 (1996).
  9. Q. B. Pei, Y. Yang, "Solid-state polymer light-emitting electrochemical cells," Synth. Met. 80, 131-136 (1996).
  10. Q. B. Pei, Y. Yang, G. Yu, Y. Cao, A. J. Heeger, "Solid state polymer light-emitting electrochemical cells: Recent developments," Synth. Met. 85, 1229-1232 (1997).
  11. Y. Yang, "Polymer electroluminescent devices," MRS Bulletin 22, 31-38 (1997).
  12. J. W. Baltchford, S. W. Jessen, L.-B. Lin, T. L. Gustafson, D.-K. Fu, H.-L. Wang, T. M. Swager, A. G. MacDiarmid, A. J. Epstein, "Photoluminescence in pyridine-based polymers: Role of aggregates," Phys. Rev. B 54, 9180-9189 (1996).
  13. R. F. Mahrt, T. Pauck, U. Lemmer, U. Siegner, M. Hopmeier, R. Hennig, H. Bassler, E. O. Gobel, P. H. Bolivar, G. Wegmann, H. Kurz, U. Scherf, "Dynamics of optical excitations in a ladder-type pi-conjugated polymer containing aggregate states," Phys. Rev. B 54, 1759-1765 (1996).
  14. T. Q. Nguyen, V. Doan, B. J. Schwartz, "Conjugated polymer aggregates in solution: Control of interchain interactions," J. Chem. Phys. 110, 4068-4078 (1999).
  15. M. Yan, L. J. Rothberg, F. Papadimitrakopoulos, M. E. Galvin, T. M. Miller, "Deffect quenching of conjugated polymer luminescence," Phys. Rev. Lett. 73, 744-747 (1994).
  16. Y. F. Li, Y. Cao, J. Gao, D. L. Wang, G. Yu, A. J. Heeger, "Electrochemical properties of luminescent polymers and polymer light-emitting electrochemical cells," Synth. Met. 99, 243-248 (1999).
  17. J. Gao, J. Dane, "Visualization of electrochemical doping and light-emitting junction formation in conjugated polymer films," Appl. Phys. Lett. 84, 2778-2780 (2004).
  18. J. Dane, C. Tracy, J. Gao, "Direct observation of a frozen junction in polymer light-emitting electrochemical cells," Appl. Phys. Lett. 86, (2005).
  19. Y. Hu, C. Tracy, J. Gao, "High-resolution imaging of electrochemical doping and dedoping processes in luminescent conjugated polymers," Appl. Phys. Lett. 88, (2006).
  20. D. J. Dick, A. J. Heeger, Y. Yang, Q. B. Pei, "Imaging the structure of the p-n junction in polymer light-emitting electrochemical cells," Adv. Mater. 8, 985-987 (1996).
  21. J. Gao, A. J. Heeger, I. H. Campbell, D. L. Smith, "Direct observation of junction formation in polymer light-emitting electrochemical cells," Phys. Rev. B 59, R2482-R2485 (1999).
  22. Y. Greenwald, F. Hide, J. Gao, F. Wudl, A. J. Heeger, "Cyclic voltammetry studies of light-emitting electrochemical cells," J. Electrochem. Soc. 144, L70-L72 (1997).
  23. Y. F. Li, J. Gao, G. Yu, Y. Cao, A. J. Heeger, "Ac impedance of polymer light-emitting electrochemical cells and light-emitting diodes: A comparative study," Chem. Phys. Lett. 287, 83-88 (1998).
  24. I. H. Campbell, D. L. Smith, C. J. Neef, J. P. Ferraris, "Capacitance measurements of junction formation and structure in polymer light-emitting electrochemical cells," Appl. Phys. Lett. 72, 2565-2567 (1998).
  25. G. Yu, Y. Cao, C. Zhang, Y. F. Li, J. Gao, A. J. Heeger, "Complex admittance measurements of polymer light-emitting electrochemical-cells: Ionic and electronic contributions," Appl. Phys. Lett. 73, 111-113 (1998).
  26. D. L. Smith, "Steady state model for polymer light-emitting electrochemical cells," J. Appl. Phys. 81, 2869-2880 (1997).
  27. I. Riess, D. Cahen, "Analysis of light emitting polymer electrochemical cells," J. Appl. Phys. 82, 3147-3151 (1997).
  28. J. A. Manzanares, H. Riess, A. J. Heeger, "Polymer light-emitting electrochemical cells: A theoretical study of junction formation under steady-state conditions," J. Phys. Chem. B 102, 4327-4336 (1998).
  29. M. Sampietro, R. Sotgiu, F. P. Wenzl, L. Holzer, S. Tasch, G. Leising, "Electrical characteristics of light-emitting electrochemical cells based on a wide bandgap polymer," Phys. Rev. B 61, 266-271 (2000).
  30. Y. Cao, G. Yu, C. Zhang, R. Menon, A. J. Heeger, "Polymer light-emitting diodes with polyethylene dioxythiophene-polystyrene sulfonate as the transparent anode," Synth. Met. 87, 171-174 (1997).
  31. T. M. Brown, J. S. Kim, R. H. Friend, F. Cacialli, R. Daik, W. J. Feast, "Built-in field electroabsorption spectroscopy of polymer light-emitting diodes incorporating a doped poly(3,4-ethylene dioxythiophene) hole injection layer," Appl. Phys. Lett. 75, 1679-1681 (1999).
  32. Q. J. Sun, C. H. Yang, G. F. He, Y. F. Li, "Effects of electrode modifications on the performance of polymer light-emitting electrochemical cells," Synth. Met. 138, 561-565 (2003).
  33. A. Kraft, A. C. Grimsdale, A. B. Holmes, "Electroluminescent conjugated polymers—Seeing polymers in a new light," Angew. Chem. Int. Ed. 37, 402-428 (1998).
  34. Q. J. Sun, X. W. Zhan, B. Zhang, C. H. Yang, Y. Q. Liu, Y. F. Li, D. B. Zhu, "Polymer light-emitting electrochemical cell based on a novel poly(aryleneethynylene) consisting of ethynylfluorene and tetraphenyldiaminobiphenyl units," Polym. Adv. Technol. 15, 70-74 (2004).
  35. M. M. Richter, F. R. F. Fan, F. Klavetter, A. J. Heeger, A. J. Bard, "Electrochemistry and electrogenerated chemiluminescence of films of the conjugated polymer 4-methoxy-(2-ethylhexoxyl)-2,5-polyphenylenevinylene," Chem. Phys. Lett. 226, 115-120 (1994).
  36. L. Geng, R. A. Reed, M. H. Kim, T. T. Wooster, B. N. Oliver, J. Egekeze, R. T. Kennedy, J. W. Jorgenson, J. F. Parcher, R. W. Murray, "Chemical phenomena in solid-state voltammetry in polymer solvents," J. Amer. Chem. Soc. 111, 1614-1619 (1989).
  37. G. Yu, A. J. Heeger, "High efficiency photonic devices made with semiconducting polymers," Synth. Met. 85, 1183-1186 (1997).
  38. G. Yu, Q. B. Pei, A. J. Heeger, "Planar light-emitting devices fabricated with luminescent electrochemical polyblends," Appl. Phys. Lett. 70, 934-936 (1997).
  39. J. Shin, A. Dzwilewski, S. Xiao, A. Fransson, G. N. Ankah, L. Edman, "Light emission at 5 V from a polymer device with a millimeter-sized interelectrode gap," Appl. Phys. Lett. 89, (2006).
  40. Y. Yang, Q. B. Pei, "Voltage controlled two color light-emitting electrochemical cells," Appl. Phys. Lett. 68, 2708-2710 (1996).
  41. L. F. Santos, L. M. Carvalho, F. E. G. Guimaraes, D. Goncalves, R. M. Faria, "Electrical and optical properties of light emitting electrochemical cells using MEH-PPV/PEO: Lithium-salt blends," Synth. Met. 121, 1697-1698 (2001).
  42. Y. Cao, G. Yu, A. J. Heeger, C. Y. Yang, "Efficient, fast response light-emitting electrochemical cells: Electroluminescent and solid electrolyte polymers with interpenetrating network morphology," Appl. Phys. Lett. 68, 3218-3220 (1996).
  43. J. E. Denness, D. Parker, H. V. A. Hubbard, "Synthesis of crown-ether polymers incorporating 12-membered and 13-membered tetraoxa rings linked to poly(propylene oxide) and poly(phosphazene) backbones and behavior of the lithium-doped materials," J. Chem. Soc. Perkin Trans. 2, 1445-1453 (1994).
  44. L. Collie, D. Parker, C. Tachon, H. V. S. Hubbard, G. R. Davies, I. M. Ward, S. C. Wellings, "Synthesis and lithium transport in ionically conducting crown-ether polymers," Polymer 34, 1541-1543 (1993).
  45. Y. Cao, Q. B. Pei, M. R. Andersson, G. Yu, A. J. Heeger, "Light-emitting electrochemical cells with crown ether as solid electrolyte," J. Electrochem. Soc. 144, L317-L320 (1997).
  46. S. Lascaud, M. Perrier, A. Vallee, S. Besner, J. Prudhomme, M. Armand, "Phase-diagrams and conductivity behavior of poly(ethylene oxide) molten-salt rubbery electrolytes," Macromolecules 27, 7469-7477 (1994).
  47. H. Djellab, M. Armand, D. Delabouglise, "Stabilization of the conductivity of poly(3-methylthiophene) by triflimide anions," Synth. Met. 74, 223-226 (1995).
  48. W. Lu, A. G. Fadeev, B. H. Qi, E. Smela, B. R. Mattes, J. Ding, G. M. Spinks, J. Mazurkiewicz, D. Z. Zhou, G. G. Wallace, D. R. MacFarlane, S. A. Forsyth, M. Forsyth, "Use of ionic liquids for pi-conjugated polymer electrochemical devices," Science 297, 983-987 (2002).
  49. S. Panozzo, M. Armand, O. Stephan, "Light-emitting electrochemical cells using a molten delocalized salt," Appl. Phys. Lett. 80, 679-681 (2002).
  50. T. Ouisse, T. M. Armand, Y. Kervella, O. Stephan, "Fully transparent, organic light-emitting electrochemical cells," Appl. Phys. Lett. 81, 3131-3133 (2002).
  51. T. Ouisse, O. Stephan, M. Armand, J. C. Lepretre, "Double-layer formation in organic light-emitting electrochemical cells," J. Appl. Phys. 92, 2795-2802 (2002).
  52. C. H. Yang, Q. J. Sun, J. Qiao, Y. F. Li, "Ionic liquid doped polymer light-emitting electrochemical cells," J. Phys. Chem. B 107, 12981-12988 (2003).
  53. Q. B. Pei, Y. Yang, "Efficient photoluminescence and electroluminescence from a soluble polyfluorene," J. Am. Chem. Soc. 118, 7416-7417 (1996).
  54. Y. Yang, Q. B. Pei, "Efficient blue-green and white light-emitting electrochemical cells based on poly[9,9-bis(3,6-dioxaheptyl)-fluorene-2,7-diyl," J. Appl. Phys. 81, 3294-3298 (1997).
  55. G. Ho, H. Meng, S. Lin, S. Horng, C. Hsu, L. Chen, S. Chang, "Efficient white light emission in conjugated polymer homojunctions," Appl. Phys. Lett. 85, 4576-4578 (2004).
  56. Y. H. Xu, J. B. Peng, Y. Q. Mo, Q. Hou, Y. Cao, "Efficient polymer white-light-emitting diodes," Appl. Phys. Lett. 86, (2005).
  57. Q. J. Sun, B. H. Fan, C. H. Yang, Y. F. Li, Y. Yang, "White light from polymer light-emitting diodes: Utilization of fluorenone defects and exciplex," Appl. Phys. Lett. 88, (2006).
  58. L. Holzer, B. Winkler, F. P. Wenzl, S. Tasch, L. Dai, A. W. H. Mau, G. Leising, "Light-emitting electrochemical cells and light-emitting diodes based on ionic conductive poly(phenylene vinylene): A new chemical sensor system," Synth. Met. 100, 71-77 (1999).
  59. S. Tasch, L. Holzer, F. P. Wenzl, J. Gao, B. Winkler, L. Dai, A. W. H. Mau, R. Sotgiu, M. Sampietro, U. Scherf, K. Mullen, A. J. Heeger, G. Leising, "Light-emitting electrochemical cells with microsecond response times based on PPPs and novel PPVs," Synth. Met. 102, 1046-1049 (1999).
  60. J. Morgado, R. H. Friend, F. Cacialli, B. S. Chuah, S. C. Moratti, A. B. Holmes, "Light-emitting devices based on a poly(p-phenylene vinylene) derivative with ion-coordinating side groups," J. Appl. Phys. 86, 6392-6395 (1999).
  61. L. Holzer, F. P. Wenzl, S. Tasch, G. Leising, B. Winkler, L. Dai, A. W. H. Mau, "Ionochromism in a light-emitting electrochemical cell with low response time based on an ionic conductive poly-phenylene vinylene," Appl. Phys. Lett. 75, 2014-2016 (1999).
  62. J. Morgado, F. Cacialli, R. H. Friend, B. S. Chuah, H. Rost, A. B. Holmes, "Light-emitting devices based on a poly(p-phenylenevinylene) statistical copolymer with oligo(ethylene oxide) side groups," Macromolecules 34, 3094-3099 (2001).
  63. J. Morgado, R. H. Friend, F. Cacialli, B. S. Chuah, H. Rost, S. C. Moratti, A. B. Holmes, "Light-emitting electrochemical cells based on poly(p-phenylene vinylene) copolymers with ion-transporting side groups," Synth. Met. 122, 111-113 (2001).
  64. C. Huang, W. Huang, J. Guo, C. Z. Yang, E. T. Kang, "A novel rigid-rod alternating poly(p-phenylenevinylene) derivative with oligo(ethylene oxide) side chains," Polymer 42, 3929-3938 (2001).
  65. U. Lauter, W. H. Meyer, G. Wegner, "Molecular composites from rigid-rod poly(p-phenylene)s with oligo(oxyethylene) side chains as novel polymer electrolytes," Macromolecules 30, 2092-2101 (1997).
  66. T. Johansson, W. Mammo, M. R. Andersson, O. Inganas, "Light-emitting electrochemical cells from oligo(ethylene oxide)-substituted polythiophenes: Evidence for in situ doping," Chem. Mater. 11, 3133-3139 (1999).
  67. J. Morgado, F. Cacialli, R. H. Friend, B. S. Chuah, S. C. Moratti, A. B. Holmes, "Luminescence properties of PPV-based copolymers with crown ether substituents," Synth. Met. 111, 449-452 (2000).
  68. C. H. Yang, G. F. He, R. Q. Wang, Y. F. Li, "Luminescent block copolymer containing PEO-like segments for polymer light-emitting devices," Mol. Cryst. Liq. Cryst. 337, 473-476 (1999).
  69. Q. J. Sun, H. Q. Wang, C. H. Yang, Y. F. Li, "Blue-green light-emission LECs based on block copolymers containing di(alpha-naphthalene vinylene)benzene chromophores and tri(ethylene oxide) spacers," Synth. Met. 128, 161-165 (2002).
  70. Q. J. Sun, H. Q. Wang, C. H. Yang, X. G. Wang, D. S. Liu, Y. F. Li, "Polymer light-emitting electrochemical cells with the block copolymers containing PEO segments," Thin Solid Films 417, 14-19 (2002).
  71. Q. J. Sun, H. Q. Wang, C. H. Yang, Y. F. Li, "Synthesis and electroluminescence of novel copolymers containing crown ether spacers," J. Mater. Chem. 13, 800-806 (2003).
  72. Q. J. Sun, H. Q. Wang, C. H. Yang, Y. F. Li, "Polymer light-emitting electrochemical cell based on a novel block copolymer containing tri(ethylene oxide) spacers," Synth. Met. 137, 1087-1088 (2003).
  73. F. Cacialli, R. H. Friend, W. J. Feast, P. W. Lovenich, "Poly(distyrylbenzene-block-sexi(ethylene oxide)), a highly luminescent processable derivative of PPV," Chem. Commun. 1778-1779 (2001).
  74. V. Cimrova, W. Schmidt, R. Rulkens, M. Schulze, W. Meyer, D. Neher, "Efficient blue light emitting devices based on rigid-rod polyelectrolytes," Adv. Mater. 8, 585-588 (1996).
  75. J. Gao, G. Yu, A. J. Heeger, "Polymer light-emitting electrochemical cells with frozen p-i-n junction," Appl. Phys. Lett. 71, 1293-1295 (1997).
  76. J. Gao, Y. F. Li, G. Yu, A. J. Heeger, "Polymer light-emitting electrochemical cells with frozen junctions," J. Appl. Phys. 86, 4594-4599 (1999).
  77. Y. F. Li, J. Gao, D. L. Wang, G. Yu, Y. Cao, A. J. Heeger, "Ac impedance of frozen junction polymer light-emitting electrochemical cells," Synth. Met. 97, 191-194 (1998).
  78. Y. Zhang, Y. Hu, J. Gao, "Improving the efficiency of polymer light-emitting electrochemical cells by controlled doping relaxation," Appl. Phys. Lett. 88, (200).
  79. J. H. Shin, S. Xiao, A. Fransson, L. Edman, "Polymer light-emitting electrochemical cells: Frozen-junction operation of an ‘ionic liquid’ device," Appl. Phys. Lett. 87, (2005).
  80. G. Yu, Y. Cao, M. Andersson, J. Gao, A. J. Heeger, "Polymer light-emitting electrochemical cells with frozen p-i-n junction at room temperature," Adv. Mater. 10, 385-388 (1998).
  81. F. C. Chen, Y. Yang, Q. B. Pei, "Phosphorescent light-emitting electrochemical cell," Appl. Phys. Lett. 81, 4278-4280 (2002).
  82. Y. Kervella, M. Armand, O. Stephan, "Organic light-emitting electrochemical cells based on polyfluorene—Investigation of the failure modes," J. Electrochem. Soc. 148, H155-H160 (2001).
  83. J. Dane, J. Gao, "Imaging the degradation of polymer light-emitting devices," Appl. Phys. Lett. 85, 3905-3907 (2004).
  84. D. Dini, "Electrochemiluminescence from organic emitters," Chem. Mater. 17, 1933-1945 (2005).
  85. J. Slinker, D. Bernards, P. L. Houston, H. D. Abruna, S. Bernhard, G. G. Maliaras, "Solid-state electroluminescent devices based on transition metal complexes," Chem. Commun. 2392-2399 (2003).
  86. D. M. Roundhill, Photochemistry and Photophysics of Metal Complexes (Plenum, 1994) pp. 165-210.
  87. A. Juris, V. Balzani, F. Barigelletti, S. Campagna, P. Belser, A. Von Zelewsky, "Ru(II) polypyridine complexes: Photophysics, photochemistry, electrochemistry, and chemiluminescence," Coordination Chemistry Rev. 84, 85-277 (1988).
  88. E. S. Handy, A. J. Pal, M. F. Rubner, "Solid-state light-emitting devices based on the tris-chelated ruthenium(II) complexes. 2. tris(bipyridyl)ruthenium(II) as a high-brightness emitter," J. Amer. Chem. Soc. 121, 3525-3528 (1999).
  89. F. G. Gao, A. J. Bard, "Solid-state organic light-emitting diodes based on ${\rm tris}(2,2^{\prime}-{\rm bipyridine}){\rm ruthenium}({\rm II})$ complexes," J. Am. Chem. Soc. 122, 7426-7427 (2000).
  90. F. R. F. Fan, A. J. Bard, "Scanning probe microscopy studies of solid-state molecular electroluminescent devices based on ${\hbox{tris}}(2,2^{\prime}-{\hbox{bipyridine}}){\hbox{ruthenium}}({\hbox{II}})$ complexes," J. Phys. Chem. B 107, 1781-1787 (2003).
  91. H. Rudmann, S. Shimada, M. F. Rubner, "Solid-state light-emitting devices based on tris-chelated ruthenium(II) complexes. 4. High efficiency light-emitting devices based on derivatives of the ${\hbox{tris}}(2,2^{\prime}-{\hbox{bipyridine}}){\hbox{ruthenium}}({\hbox{II}})$ complex," J. Amer. Chem. Soc. 124, 4918-4921 (2002).
  92. H. Rudmann, M. F. Rubner, "Single layer light-emitting devices with high efficiency and long lifetime based on ${\hbox{tris}}(2,2^{\prime}{\hbox{bipyridyl}}){\hbox{ruthenium}}({\hbox{II}})$ hexafluorophosphate," J. Appl. Phys. 90, 4338-4345 (2001).
  93. K. M. Maness, R. H. Terrill, T. J. Meyer, R. W. Murry, R. M. Wightman, "Solid-state diode-like chemiluminescence based on serial, immobilized concentration gradients in mixed-valent ${\rm poly}[{\hbox{Ru}}({\rm vbpy})_{3}{({\hbox{PF}}_{6})}_{2}$ films," J. Amer. Chem. Soc. 118, 10609-10616 (1997).
  94. J. K. Lee, D. S. Yoo, E. S. Handy, M. F. Rubner, "Thin film light emitting devices from an electroluminescent ruthenium complex," Appl. Phys. Lett. 69, 1686-1688 (1996).
  95. K. M. Maness, H. Masui, R. M. Wightman, R. W. Murry, "Solid-state electrochemically generated luminescence based on serial frozen concentration gradients of Ru III/II and Ru II/I couples in a molten ruthenium $2,2^{\prime}-{\hbox{bipyridine}}$ complex," J. Amer. Chem. Soc. 119, 3987-3993 (1997).
  96. C. M. Elliott, F. Pichot, C. J. Bloom, L. S. Rider, "Highly efficient solid-state electrochemically generated chemiluminescence from ester-substituted trisbipyridineruthenium(II)-based polymers," J. Amer. Chem. Soc. 120, 6781-6784 (1998).
  97. C. H. Lyons, E. D. Abbas, J. K. Lee, M. F. Rubner, "Solid-state electroluminescent devices based on trischelated ruthenium(II) complexes. 1. Thin film blends with poly(ethylene oxide)," J. Am. Chem. Soc. 120, 12100-12107 (1998).
  98. C. Y. Liu, A. J. Bard, "Individually addressable submicron scale light-emitting devices based on electroluminescence of solid ${\hbox{Ru}}({\hbox{bpy}})_{3}{({\hbox{ClO}}_{4})}_{2}$ films," J. Am. Chem. Soc. 124, 4190-4191 (2002).
  99. M. Buda, G. Kalyuzhny, A. J. Bard, "Thin-film solid-state electroluminescent devices based on ${\rm tris}(2,2^{\prime}-{\rm bipyridine}){\rm ruthenium}({\rm II})$ complexes," J. Am. Chem. Soc. 124, 6090-6098 (2002).
  100. S. Bernhard, J. A. Barron, P. L. Houston, H. D. Abruna, J. L. Ruglovsky, X. Gao, G. G. Malliara, "Electroluminescence in ruthenium(II) complexes," J. Amer. Chem. Soc. 124, 13624-13628 (2002).
  101. G. Kalyuzhny, M. Buda, J. McNeill, P. Barbara, A. J. Bard, "Stability of thin-film solid-state electroluminescent devices based on ${\rm tris}(2,2^{\prime}-{\hbox{bipyridine}}){\hbox{ruthenium}}({\hbox{II}})$ complexes," J. Amer. Chem. Soc. 125, 6272-6283 (2003).
  102. N. Armaroli, G. Accorsi, M. Holler, O. Moudam, J. F. Nerrengarten, Z. Zhou, R. T. Wegh, R. Welter, "Highly luminescent Cu-I complexes for light-emitting electrochemical cells," Adv. Mater. 18, 1313-1316 (2006).

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