Tuning of the emission color of organic electroluminescent devices by exciplex formation at the organic solid interface
Tuning of the emission color of organic electroluminescent devices by exciplex formation at the organic solid interface
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DOI：
10.1007/s003390050829
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发表时间：
1998-11
期刊：
影响因子：
--
通讯作者：
H. Ogawa;R. Okuda;Y. Shirota
中科院分区：
文献类型：
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作者：
H. Ogawa;R. Okuda;Y. Shirota
1，3，5-三[（4-二苯基氨基苯基）苯氨基]苯、N，N′-双（3-甲基苯基）-N，N ′-二苯基-[1，1 ′-联苯]-4，4 ′-二胺和4，4 ′，4 ′′-三（N-咔唑基）三苯胺由于在TPOB和空穴传输材料之间的固体界面处形成的激基复合物而发射明亮的光。通过测量等摩尔量的TPOB和每种空穴传输材料的混合物的光致发光光谱和寿命来证明激基复合物的形成。通过改变空穴传输材料的电离电势，将发射颜色从蓝绿色调谐到橙子，从而获得固定的电子传输材料TPOB。
′,4′′-tris(3-methylphenylphenylamino)triphenylamine, 1,3,5-tris[(4-diphenylaminophenyl)phenylamino]benzene, N, N′-bis(3-methylphenyl)-N, N′-diphenyl-[1,1′-biphenyl]-4,4′-diamine, and 4,4′,4′′-tri(N-carbazolyl)triphenylamine, emitted bright light resulting from the exciplex formed at the solid interface between TPOB and the hole-transporting material. The exciplex formation was evidenced by the measurements of the photoluminescence spectra and lifetimes of the mixture of an equimolar amount of TPOB and each of the hole-transporting materials. Tuning of the emission color from greenish blue to orange was attained by varying the ionization potential of the hole-transporting material for the fixed electron-transporting material of TPOB.