Polymer-based white light OLED and preparation method thereof
A polymer and white light technology, which is applied in the manufacture/processing of organic light-emitting devices, organic light-emitting devices, semiconductor/solid-state device manufacturing, etc., can solve the problems of spectral instability and spectral shift, and achieve broad application prospects, low cost, Pollution and hazard reduction effects
Inactive Publication Date: 2015-03-11
NANJING UNIV OF POSTS & TELECOMM
View PDF3 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, until now, the spectrum of the reported polymer host complementary color phosphorescent white OLED devices still shifts with voltage changes, and the problem of spectral instability has not been resolved (Ying.L, Wu.H.B, Wong.W.Y, Adv.Mater.2014, 26, 2459)
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036] The implementation method of the present invention will be described below in conjunction with specific embodiments.
[0037] The structure of the warm white light device involved in the present invention is as follows: figure 1 As shown, in which ITO (Indium Tin Oxides, indium tin oxide) conductive glass is used as the substrate and anode of the device, a layer of 35nm thick PEDOT:PSS (Poly-(3,4-ethylenedioxythiophene) Polystyrene sulfonate, poly(3,4 -ethylenedioxythiophene)-poly(styrenesulfonic acid)) as hole injection layer and electrode modification layer. The light-emitting layer is composed of PVK and OXD-7(2,2'-(1,3-Phenylene)bis[5-(4-tert-butylphenyl)-1,3,4–oxadiazole], 2,2'- (1,3-phenyl)bis[5-(4-tert-butylphenyl)-1,3,4-oxadiazole]), guest material FIrpic (Bis(4,6-difluorophenyl-pyridinato-N, C2) picolinatoiridium, bis(4,6-difluorophenylpyridine-N,C2) picolinoyl iridium), Ir(bt) 2 (acac)(Bis(2-phenyl-benzothiazole-C2,N)(acetylacet-onate)iridium(III), acetylac...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a polymer-based white light OLED and a preparation method thereof. The polymer-based white light OLED comprises an ITO glass base layer, a hole transporting layer, a light emitting layer, an electron transporting layer and a metal cathode layer from the bottom up, wherein the ITO glass base layer takes ITO conductive glass as a substrate and an anode of the device, PEDOT:PSS acts as a hole injection layer and an electrode modification layer so as to further forms the hole transporting layer, TPBI is the electron transporting layer of the device, and calcium and silver form the metal cathode layer. The polymer-based white light OLED is characterized in that the light emitting layer is formed by subject materials PVK and OXD-7 and object materials FIrpic and Ir(bt)2(acac). The device provided by the invention can keep very stable spectrum emission when the brightness is within a range of 100cd m<-2> to 20000cd m<-2>, and a problem that polymer complementary-color white light OLED devices are unstable in spectrum is solved, thereby being conducive to realizing practical application of devices of the type.
Description
technical field [0001] The invention relates to the field of organic light-emitting diodes, in particular to a polymer-based white light OLED and a preparation method thereof. Background technique [0002] OLED (Organic Light Emitting Diodes, Organic Light Emitting Diodes) has broad application prospects in the fields of display and solid-state lighting due to its own advantages of thinness, lightness and self-luminescence. White light OLED devices can generally be divided into four categories: complementary color white light devices, three-primary color white light devices and four-primary color white light devices. Among them, complementary color devices, especially polymer-based complementary color phosphorescent white light OLED devices, are simple in composition, high in energy conversion efficiency, and have The solution processing method has the advantages of low energy consumption, easy operation, and large-scale production, and has been extensively studied in the fi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H01L51/54H01L51/56
CPCH10K85/30H10K85/341H10K71/00
Inventor 叶尚辉胡天庆周舟黄维
Owner NANJING UNIV OF POSTS & TELECOMM