| abstract |
The invention discloses an ink and a luminescent film for inkjet printing of luminescent materials and applications. The solute of the ink comprises 4,4′,4″-tris(carbazole-9-yl)triphenylamine, 2,6-bis ((9H-carbazol-9-yl)-3,1-phenylene) pyridine and tris (2-phenylpyridine) iridium (III), the solvent includes o-dichlorobenzene and chloronaphthalene; the present invention adopts this The formula is used to ink-jet print organic small molecule light-emitting films on the surface of the thermally cross-linked hole transport layer, which can solve the problem of interlayer mutual dissolution and solvent penetration into the underlying functional layer. Multi-layer OLED devices with clear interfaces are prepared by inkjet printing. ; and easy to control material composition, flexible pattern design, oriented to mass production, compatible with flexible device preparation, etc., suitable for large-area, low-cost OLED applications. |