Browse > Article
http://dx.doi.org/10.12925/jkocs.2002.19.2.4

Study on the Characteristics and Fabrication of Organic Light Emitting Devices Using the Synthesised Phosphorescent Metal Complexes  

Kim, Young-Kwan (Dept of Chemical Engineering, Hongik University)
Sohn, Byoung-Chung (Dept of Chemical Engineering, Hongik University)
Kim, Jun-Ho (Dept of Electrical Information & Control Engineering, Hongik University)
Publication Information
Journal of the Korean Applied Science and Technology / v.19, no.2, 2002 , pp. 97-102 More about this Journal
Abstract
Recently, the phosphorescent organic light-emitting devices (OLEDs) have been extensively studied for their high internal quantum efficiency. In this study, we synthesised several phosphorescent metal complexes, and certified their composition using NMR. We also investigated the characteristics of the phosphorescent OLEDs with the green emitting phosphor, $Ir(ppy)_{3}$. The devices with a structure of indium-tin-oxide(ITO)/N,N'-diphenyl-N,N'-(3-methylphenyI}-1,1'-biphenyl-4,4'-diamine (TPD)/metal complex doped in host materials/2,9-dimethyl-4,7-diphenyl-l,10-phenanthroline(BCP)/tris (8-hydroxyquinolinato) Aluminum($Alq_{3}$)/Li:Al/Al was fabricated, and its electrical and optical characteristics were studied. By changing the doping concentration of tris(2-phenylpyridine)iridium ($Ir(ppy)_{3}$), we fabricated several devices and investigated their characteristics.
Keywords
OLEDs; phosphorescent metal complex; singlet; triplet; doping;
Citations & Related Records
연도 인용수 순위
  • Reference
1 M. A. Baldo, D. F. O'Brien, M. E. Thompson, and S. R. Forrest, Pbys. Reu., B60, 1442 (1999)
2 J. H. Kim, S. P. Lee, S. H. Lee, Y. K. Kim, and J. S. Kim, Mot. Cryst. Liq. Cryst, 371, 455 (2001)   DOI   ScienceOn
3 C. W. Tang and S. A. Van Slyke, Appl. Phys. Lett., 51, 913 (1987)   DOI
4 M. A. Baldo, D. F. O'Brien, Y. You, A. Shousdkov, S. Sibley, M. R. Thompson, and S. R. Foreest, Nature, 395, 151 (1998)   DOI   ScienceOn
5 Y. Cao, I. D. Parker, G. Yu, C. Zhang, and A. J. Heeger, Nature, 397, 414 (1999)   DOI   ScienceOn
6 M. A. Baldo, S. Lamansky, P. E. Burrows, M. E. Thompson, and S. R. Forrest, Appl Phys. Lett.. 75, 4 (1999)   DOI   ScienceOn
7 M. A. Lambert and P. Mark, 'Current Injection in Solids', p.207, Academic Press, New York and London (1970)