Efficient electron injection in organic light-emitting diodes using lithium quinolate/Mg:Ag/Al cathodes

Jun Yeob Lee

Journal of Industrial and Engineering Chemistry, Vol.14, No.5, 676-678, September, 2008

DOI10.1016/j.jiec.2008.04.007 Export Citation

Efficient electron injection in organic light-emitting diodes using lithium quinolate/Mg:Ag/Al cathodes

Jun Yeob Lee^†

Department of Polymer Science and Engineering, Dankook University, Jukjeon-dong, Suji-gu,Yongin, Gyeonggi, 448-701, Republic of Korea

E-mail:

A cathode structure of lithium quinolate (Liq)/Mg:Ag/Al was developed and device performances were investigated according to the thickness of Mg:Ag interlayer between Liq and Al. Device performances of Liq/Mg:Ag/Al were optimized at an interlayer thickness of 1.0 nm and power efficiency was enhanced by 50% by introducing Mg:Ag interlayer because of low driving voltage and high current efficiency.

Keywords:Organic light emitting diodes;Cathode;Lithium quinolate

[References]

Hung LS, Tang CW, Manson MG, Appl. Phys. Lett., 70, 152 (1997)
Shi SW, Ma DG, Appl. Surf. Sci., 252(18), 6337 (2006)
Heil H, Steiger J, Karg S, Gastel M, Ortner H, von Seggern H, Stoßel M, J. Appl. Phys., 89, 420 (2001)
Mason MG, Tang CW, Hung LS, Raychaudhuri P, Madathil J, Giesen DJ, Yan L, Le QT, Gao Y, Lee ST, Liao LS, Cheng LF, Salaneck WR, dos Santos DA, Bredas JL, J. Appl. Phys., 89, 1756 (2001)
Oh SY, Lee CH, Ryu SH, Oh HS, J. Ind. Eng. Chem., 12(1), 69 (2006)
Park Y, Lee J, Lee SK, Kim DY, Appl. Phys. Lett., 79, 105 (2001)
Lee J, Park Y, Lee SK, Cho EJ, Kim DY, Chu HY, Lee H, Do LM, Zyung T, Appl. Phys. Lett., 80, 3123 (2002)
Wakimoto T, Fukuda Y, Nagayama K, Yokoi A, Nakada H, Tschuida M, IEEE Trans. Electron. Devices, 44, 1245 (1997)
Huang JS, Li G, Wu E, Xu QF, Yang Y, Adv. Mater., 18(1), 114 (2006)
Schmitz C, Schmidt H, Thelakkat M, Chem. Mater., 12, 3012 (2000)
Brown TM, Friend RH, Millard IS, Lacey DJ, Butler T, Burroughes JH, Cacialli F, J. Appl. Phys., 93, 6159 (2003)
Kim SH, Jang J, Lee JY, Appl. Phys. Lett., 91, 103501 (2007)

[Referenced By]

[1] Hung LS, Tang CW, Manson MG, Appl. Phys. Lett., 70, 152 (1997)

[2] Shi SW, Ma DG, Appl. Surf. Sci., 252(18), 6337 (2006)

[3] Heil H, Steiger J, Karg S, Gastel M, Ortner H, von Seggern H, Stoßel M, J. Appl. Phys., 89, 420 (2001)

[4] Mason MG, Tang CW, Hung LS, Raychaudhuri P, Madathil J, Giesen DJ, Yan L, Le QT, Gao Y, Lee ST, Liao LS, Cheng LF, Salaneck WR, dos Santos DA, Bredas JL, J. Appl. Phys., 89, 1756 (2001)

[5] Oh SY, Lee CH, Ryu SH, Oh HS, J. Ind. Eng. Chem., 12(1), 69 (2006)

[6] Park Y, Lee J, Lee SK, Kim DY, Appl. Phys. Lett., 79, 105 (2001)

[7] Lee J, Park Y, Lee SK, Cho EJ, Kim DY, Chu HY, Lee H, Do LM, Zyung T, Appl. Phys. Lett., 80, 3123 (2002)

[8] Wakimoto T, Fukuda Y, Nagayama K, Yokoi A, Nakada H, Tschuida M, IEEE Trans. Electron. Devices, 44, 1245 (1997)

[9] Huang JS, Li G, Wu E, Xu QF, Yang Y, Adv. Mater., 18(1), 114 (2006)

[10] Schmitz C, Schmidt H, Thelakkat M, Chem. Mater., 12, 3012 (2000)

[11] Brown TM, Friend RH, Millard IS, Lacey DJ, Butler T, Burroughes JH, Cacialli F, J. Appl. Phys., 93, 6159 (2003)

[12] Kim SH, Jang J, Lee JY, Appl. Phys. Lett., 91, 103501 (2007)