Composite light-emitting layer and manufacturing method thereof, white light organic electroluminescent device
An electroluminescent device and composite light-emitting layer technology, which can be applied to organic semiconductor devices, electro-solid devices, electrical components, etc. The problem of low brightness of fluorescent dyes, to achieve the effect of improving brightness, simple preparation method and high luminous efficiency
Active Publication Date: 2016-06-08
BOE TECH GRP CO LTD
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[0003] White light is obtained by combining colors such as red, green, blue, and yellow. Usually, various colors are realized by their corresponding light-emitting materials. These materials can achieve white light through co-doping. In the prior art, white light organic electroluminescent devices The light-emitting layer of the LED is often composed of red, green and blue organic fluorescent dyes. These materials have poor chemical stability, and the color gamut of white organic electroluminescent devices is small, and the brightness of these organic fluorescent dyes is low, which will also lead to white organic electroluminescence. Luminescent devices have low brightness
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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.
[0027] Embodiments of the present invention provide a composite luminescent layer, such as figure 1 As shown, the composite light emitting layer includes a first light emitting layer 141 and a second light emitting layer 142 . Wherein, the first light-emitting layer 141 includes polyfluorene or polyfluorene derivatives, and the second light-emitting layer 142 includes quantum dots.
[0028] Optionally, the polyfluorene derivatives include: P17 (poly(9,9-dialkylfluorene)), P18 (copolymer of dihexylfluorene and anthracene), P19 (side chain containing branched biphenyl), P21a (tetraalkyl substituted indenofluorene polymer), P21b (aryl substituted indenofluorene polymer), P22a (anthracene-alkylfluore...
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The embodiments of the present invention provide a composite luminescent layer, a manufacturing method thereof, and a white light organic electroluminescence device, which relate to the technical field of electroluminescence, and can meet the requirements of various color gamuts while improving the brightness of the device. The composite light-emitting layer includes a first light-emitting layer and a second light-emitting layer; wherein, the first light-emitting layer includes polyfluorene or polyfluorene derivatives, and the second light-emitting layer includes quantum dots. The composite luminescent layer is applied to organic electroluminescent devices.
Description
technical field [0001] The invention relates to the technical field of electroluminescence, in particular to a composite luminescent layer, a manufacturing method thereof, and a white light organic electroluminescence device. Background technique [0002] At present, the application of white light organic electroluminescent devices in display and lighting will become a new direction of display and lighting technology in the future. White organic electroluminescent devices require multi-band, color stability, and high efficiency in the application of display and lighting technology, so as to meet the high color gamut and other parameters required by display technology. [0003] White light is obtained by combining colors such as red, green, blue, and yellow. Usually, various colors are realized by their corresponding light-emitting materials. These materials can achieve white light through co-doping. In the prior art, white light organic electroluminescent devices The light-...
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IPC IPC(8): H01L51/50H01L51/56
CPCH10K71/13H10K71/135H10K71/12H10K85/111H10K85/1135H10K85/151H10K50/115H10K50/13C09K11/06C09K11/08C09K2211/14Y02B20/00H10K85/115H10K71/00H10K71/15H10K2102/00
Inventor 谷敬霞尤娟娟唐琛
Owner BOE TECH GRP CO LTD