Characteristics and Fabrication of Polymer Light Emitting Diode using Copolymer having Perylene and Triazine Moieties in the Polymer Side Chain

Se Young Oh; Chang Ho Lee; Seung Hoon Ryu; Hwan Sool Oh

Journal of Industrial and Engineering Chemistry, Vol.12, No.1, 69-75, January, 2006

Se Young Oh^†, Chang Ho Lee, Seung Hoon Ryu, and Hwan Sool Oh¹

Department of Chemical & Biomolecular Engineering and Interdisciplinary of Integrated Biotechmology, Sogang University, Seoul 121-742, Korea
¹Department of Electronics Engineering, Konkuk University, Seoul 143-914, Korea

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We have synthesized a novel nonconjugated blue light-emitting copolymer containing perylene moieties as light-emitting units and triazine noieties as electron transporting units in the polymer side chains. The copolymer was very soluble in most organic solvents, e.g., monochlorobenzene, tetrahydrofuran, chloroform, and benzene. A single-layered electroluminescence (EL) device having the configuration of ITO/non-conjugated blue light-emitting copolymer/Al exhibited its maximum external quantum efficiency and good carrier balance when the triazine content was 30 %. The device emitted blue light corresponding to the emission of the perylene moieties. The drive voltage decreased dramatically below 5 V, and the CIE coordinates were x=0.16, y=0.17 A device using the copolymer doped with a Ir(ppy)3 as a phosphorescent dye showed an especially high quantum efficiency of 0.03.

Keywords:blue light-emitting copolymer;single-layered EL device;electron transporting unit;carrier balance;quantum efficiency;phosphorescent dye

[References]

Tang CW, Vanslyke SA, Appl. Phys. Lett., 51, 913 (1987)
Tang CW, Vanslyke SA, Chen CH, J. Appl. Phys., 65, 3610 (1989)
Burroughes JH, Bradley DDC, Brown AR, Marks RN, Mackay K, Friend RH, Burn PL, Holmes AB, Nature, 347, 539 (1990)
Lee JS, Suh JS, Cho IH, J. Ind. Eng. Chem., 7(6), 396 (2001)
Tessler N, Denton GJ, Friend RH, Nature, 382(6593), 695 (1996)
Weihong Z, Cheng H, Kongchan C, He T, Synth. Met., 96, 151 (1998)
Burn PL, Samuel IDW, Mater. Today., 1, 3 (1998)
Shirota YJ, Mater. Chem. Phys., 10, 1 (2000)
Partridge RH, Polymer, 24, 733 (1983)
Kido J, Trends. Polym. Sci., 10, 350 (1994)
Kido J, Kohda M, Nagai K, Appl. Phys. Lett., 61, 761 (1992)
Strukelj M, Papadimitrakopoulos F, Miller TM, Rothberg LJ, Science, 267(5206), 1969 (1995)
Kidon J, Hongawa K, Okuyama K, Nagai K, Appl. Phys. Lett., 63, 2627 (1993)
Jiang X, Register RA, Kileen KA, Thompson ME, Pschenitzka F, Hebner TR, Sturm JC, J. Appl. Phys., 91, 6717 (2002)
Kido J, Shionoya H, Nagai K, Appl. Phys. Lett., 67, 2281 (1995)
Lee CH, Ryu SH, Oh SY, J. Polym. Sci. B: Polym. Phys., 41(21), 2733 (2003)
Peng Z, Bao Z, Galvin ME, Adv. Mater., 10, 680 (1998)
Sung JH, Cho MS, Choi HJ, Jhon MS, J. Ind. Eng. Chem., 10(7), 1217 (2004)
Choi JW, Kim JS, Oh SY, Rhee HW, Lee WH, Lee SB, Thin Solid Films, 363(1-2), 271 (2000)
Oh SY, Lee CH, Kim HM, Choi JW, Rhee HW, Synth. Met., 117, 195 (2001)
Lee CH, Kim E, Oh SY, Mol. Cryst. Liq. Cryst., 371, 265 (2001)
Fink R, Heischkel Y, Thelakkat M, Schmidt HW, Chem. Mater., 10, 3620 (1998)
Kido J, Kohda M, Hongawa K, Okuyama K, Nagai K, Mol. Cryst. Liq. Cryst., 227, 277 (1993)
Baldo MA, O'Brien DF, You Y, Shoustikov A, Sibley S, Thompson ME, Forrest SR, Nature, 395(6698), 151 (1998)
O'Brien DF, Baldo MA, Thompson ME, Forrest SR, Appl. Phys. Lett., 74, 442 (1999)
Baldo MA, Lamansky S, Burrows PE, Thompson ME, Forrest SR, Appl. Phys. Lett., 75, 4 (1999)
Lecomte P, Drapier I, Dubois P, Teyssie P, Jerome R, Macromolecules, 30(24), 7631 (1997)

[Referenced By]

[Related Articles]

[1] Tang CW, Vanslyke SA, Appl. Phys. Lett., 51, 913 (1987)

[2] Tang CW, Vanslyke SA, Chen CH, J. Appl. Phys., 65, 3610 (1989)

[3] Burroughes JH, Bradley DDC, Brown AR, Marks RN, Mackay K, Friend RH, Burn PL, Holmes AB, Nature, 347, 539 (1990)

[4] Lee JS, Suh JS, Cho IH, J. Ind. Eng. Chem., 7(6), 396 (2001)

[5] Tessler N, Denton GJ, Friend RH, Nature, 382(6593), 695 (1996)

[6] Weihong Z, Cheng H, Kongchan C, He T, Synth. Met., 96, 151 (1998)

[7] Burn PL, Samuel IDW, Mater. Today., 1, 3 (1998)

[8] Shirota YJ, Mater. Chem. Phys., 10, 1 (2000)

[9] Partridge RH, Polymer, 24, 733 (1983)

[10] Kido J, Trends. Polym. Sci., 10, 350 (1994)

[11] Kido J, Kohda M, Nagai K, Appl. Phys. Lett., 61, 761 (1992)

[12] Strukelj M, Papadimitrakopoulos F, Miller TM, Rothberg LJ, Science, 267(5206), 1969 (1995)

[13] Kidon J, Hongawa K, Okuyama K, Nagai K, Appl. Phys. Lett., 63, 2627 (1993)

[14] Jiang X, Register RA, Kileen KA, Thompson ME, Pschenitzka F, Hebner TR, Sturm JC, J. Appl. Phys., 91, 6717 (2002)

[15] Kido J, Shionoya H, Nagai K, Appl. Phys. Lett., 67, 2281 (1995)

[16] Lee CH, Ryu SH, Oh SY, J. Polym. Sci. B: Polym. Phys., 41(21), 2733 (2003)

[17] Peng Z, Bao Z, Galvin ME, Adv. Mater., 10, 680 (1998)

[18] Sung JH, Cho MS, Choi HJ, Jhon MS, J. Ind. Eng. Chem., 10(7), 1217 (2004)

[19] Choi JW, Kim JS, Oh SY, Rhee HW, Lee WH, Lee SB, Thin Solid Films, 363(1-2), 271 (2000)

[20] Oh SY, Lee CH, Kim HM, Choi JW, Rhee HW, Synth. Met., 117, 195 (2001)

[21] Lee CH, Kim E, Oh SY, Mol. Cryst. Liq. Cryst., 371, 265 (2001)

[22] Fink R, Heischkel Y, Thelakkat M, Schmidt HW, Chem. Mater., 10, 3620 (1998)

[23] Kido J, Kohda M, Hongawa K, Okuyama K, Nagai K, Mol. Cryst. Liq. Cryst., 227, 277 (1993)

[24] Baldo MA, O'Brien DF, You Y, Shoustikov A, Sibley S, Thompson ME, Forrest SR, Nature, 395(6698), 151 (1998)

[25] O'Brien DF, Baldo MA, Thompson ME, Forrest SR, Appl. Phys. Lett., 74, 442 (1999)

[26] Baldo MA, Lamansky S, Burrows PE, Thompson ME, Forrest SR, Appl. Phys. Lett., 75, 4 (1999)

[27] Lecomte P, Drapier I, Dubois P, Teyssie P, Jerome R, Macromolecules, 30(24), 7631 (1997)