Invention Grant
- Patent Title: Charge-transporting varnish
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Application No.: US15026543Application Date: 2014-09-26
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Publication No.: US09853217B2Publication Date: 2017-12-26
- Inventor: Naoki Otani
- Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
- Applicant Address: JP Tokyo
- Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
- Current Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-206727 20131001
- International Application: PCT/JP2014/075641 WO 20140926
- International Announcement: WO2015/050057 WO 20150409
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/56 ; C08G16/02 ; C09D161/26 ; H01L51/00 ; C09K11/06 ; C08G12/26 ; C09D179/02 ; C08G73/02 ; C09D5/24 ; H01L51/52

Abstract:
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.
Public/Granted literature
- US20160248017A1 CHARGE-TRANSPORTING VARNISH Public/Granted day:2016-08-25
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