Patent ID: 7875877
Filing Date: 2011-01-25
Classification: H01L

Abstract:
1. An organic thin film transistor comprising: a gate electrode; an organic semiconductor layer insulated from the gate electrode; a source electrode and a drain electrode insulated from the gate electrode and electrically connected to the organic semiconductor layer; a first gate insulating layer interposed between the gate electrode and the organic semiconductor layer; and a second layer interposed between and entirely contacting the gate insulating layer and the organic semiconductor layer and comprising a compound having a hole-donor group, wherein the second layer is not interposed between the organic semiconductor layer and the source electrode or between the organic semiconductor layer and the drain electrode, and wherein the compound having the hole-donor group is at least one selected from the group consisting of 2,4,7-trinitrofluorenone, 4-nitroaniline, 2,4-dinitroaniline, 5-nitroanthranilonitrile, 2,4-dinitrodiphenylamine, 1,5-dinitronaphthalene, 4-nitrobiphenyl, 4-dimethylamino-4′-nitrostilbene, 1,4-dicyanobenzene, 9,10-dicyanoanthracene, 1,2,4,5-tetracyanobenzene, 3,5-dinitrobenzonitrile, 3,4,9,10-perylenetetracarboxylic dianhydride, N,N′-bis(di-t-butylphenyl)-3,4,9,10-perylenedicarboxyimide), tetrachlorophthalic anhydride, tetrachlorophthalonitrile, tetrafluoro-1,4-benzoquinone, naphthoquinone, phenanthrenequinone, 1,10-phenanthroline-5,6-dione, phenazine, quinoxaline, 2,3,6,7-tetrachloroquinoxaline, and tris-8-hydroxyquinoline aluminum (Alq