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Compound luminous layer and manufacturing method thereof, and white light organic electroluminescence device

A technology of electroluminescent devices and composite light-emitting layers, which is applied in the direction of organic semiconductor devices, electric solid-state devices, electrical components, etc. The problem of low brightness of fluorescent dyes can be achieved by improving brightness, simple preparation method and high luminous efficiency

Active Publication Date: 2014-01-08
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by 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-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

Method used

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  • Compound luminous layer and manufacturing method thereof, and white light organic electroluminescence device
  • Compound luminous layer and manufacturing method thereof, and white light organic electroluminescence device
  • Compound luminous layer and manufacturing method thereof, and white light organic electroluminescence device

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Embodiment Construction

[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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PUM

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Abstract

The embodiment of the invention provides a compound luminous layer and a manufacturing method thereof, and a white light organic electroluminescence device, relates to the technical field of electroluminescence, and can be used for meeting the requirement of multiple color domains and increasing the brightness of the device simultaneously. The compound luminous layer comprises a first luminous layer and a second luminous layer, wherein the first luminous layer comprises polyfluorene or a polyfluorene derivative; the second luminous layer comprises quantum dots. The compound luminous layer is applied to organic electroluminescence 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 electroluminescent 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-e...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56
CPCH10K71/13H10K71/135H10K71/12H10K85/111H10K85/1135H10K85/151H10K50/115H10K50/13H10K71/441C09K11/06C09K11/08C09K2211/14Y02B20/00H10K85/115H10K71/00H10K71/15H10K2102/00
Inventor 谷敬霞尤娟娟唐琛
Owner BOE TECH GRP CO LTD
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