Table 1

Ratio of the PLED ink

Ink 1a

Ink 2a


PVK

61

41.5

PBD

24

41.5

TPD

9

14.8

Ir(mppy)3

6

4.2


aEach figure means weight percent of materials in the solution, and the main difference between Ink 1 and Ink 2 is the ratio of hole and electron transport materials. PVK, poly(N-vinyl carbazole); PBD, 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1, 3, 4-oxadiazole; TPD, N, N'diphenyl-N, N'-Bis(3-methylphenyl)-[1, 1-biphenyl]-4, 4'-diamine; Ir(mppy)3, tris(2-(4-tolyl) phenylpyridine) iridium.

Hwang et al. Nanoscale Research Letters 2012 7:52   doi:10.1186/1556-276X-7-52

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