申请人:NISSAN CHEMICAL INDUSTRIES, LTD.
公开号:US20160248017A1
公开(公告)日:2016-08-25
A charge-transporting varnish which contains a charge-transporting substance containing fluorine atoms, a charge-transporting substance containing no fluorine atoms, a dopant substance composed of a heteropolyacid, and an organic solvent. The charge-transporting substance containing fluorine atoms is a polymer which is obtained by condensing a triaryl amine compound, an arylaldehyde compound containing fluorine atoms, a fluorene derivative having a carbonyl group and a carbazole derivative having an alkyl group or an alkyl group containing an ether structure in the N-position, and which has a weight average molecular weight of 1,000-200,000. The charge-transporting substance containing no fluorine atoms is an oligoaniline compound. A thin film formed from this charge-transporting varnish is capable of providing an organic EL element having excellent luminance characteristics and durability even in cases where the thin film is used as a single layer between a positive electrode and a light emitting layer in such a manner that the thin film is in contact with the positive electrode and the light emitting layer.
这是一种电荷传输清漆,其中包含含氟原子的电荷传输物质、不含氟原子的电荷传输物质、由杂多酸组成的掺杂物质和有机溶剂。含氟原子的电荷传输物质是一种聚合物,由三芳基胺化合物、含有氟原子的芳基醛化合物、具有羰基的芴衍生物和带有烷基或含有醚结构的烷基衍生物的咔唑衍生物缩合而成,其重量平均分子量为1,000-200,000。不含氟原子的电荷传输物质是一种寡聚苯胺化合物。使用这种电荷传输清漆形成的薄膜,即使作为正极电极和发光层之间的单层材料,使得薄膜与正极电极和发光层接触,也能提供具有优异发光特性和耐久性的有机EL元件。