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White light emitting devices based on organic multilayer structure
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lim, J. T. | - |
dc.contributor.author | Ahn, Y. J. | - |
dc.contributor.author | Kang, G. W. | - |
dc.contributor.author | Lee, Changhee | - |
dc.date.accessioned | 2009-11-23T05:40:24Z | - |
dc.date.available | 2009-11-23T05:40:24Z | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | Curr. Appl. Phys. 2 (2002) 295 | en |
dc.identifier.issn | 1567-1739 | - |
dc.identifier.uri | https://hdl.handle.net/10371/13787 | - |
dc.description.abstract | We report an efficient white-light-emitting devices using vacuum-deposited film of a hole-transporting layer of 4,4′bis[N-(1-napthyl)-N-phenyl-amino]-biphenyl (α-NPD), a bluish-green emitting layer of bis[2-(2-hydroxyphenyl)benzothiazolate] zinc, a Zn(BTZ)2, Zn(BTZ)2 doped with a red fluorescent dye of 4-dicyanomethylene-2-methyl-6-[2-(2,3,6,7-tetrahydro-1H,5H-benzo[i, j]quinolizin-8-yl)vinyl]-4H-pyran (DCM2), and an electron-transporting layer of tris(8-hydroxyquinoline) aluminum (Alq3). The incomplete energy transfer from Zn(BTZ)2 to DCM2 results in the emission of two complementary colors (blue and orange). Controlling the thickness of a Zn(BTZ)2 layer which acts as a bluish-green emitter and a hole blocking layer and the concentration of DCM2 enables tailoring of the spectral output of the device to have a balanced white emission. A device with the structure of ITO/α-NPD (50 nm)/Zn(BTZ)2 (4 nm)/Zn(BTZ)2:DCM2 (10 nm, 0.8%)/Alq3 (30 nm)/LiF(0.5 nm)/Al shows an external quantum efficiency (QE) of about 0.5%, a luminous efficiency of 0.27 lm/W, and the CIE chromaticity coordinates of (0.36, 0.33) at luminance 100 cd/m2. | en |
dc.language.iso | en | en |
dc.publisher | Elsevier | en |
dc.subject | Organic electroluminescence devices | en |
dc.subject | White-light-emitting devices | en |
dc.subject | Zn(BTZ)2 | en |
dc.subject | DCM2 | en |
dc.title | White light emitting devices based on organic multilayer structure | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 이창희 | - |
dc.identifier.doi | 10.1016/S1567-1739(02)00112-8 | - |
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