A kind of white light organic light emitting diode device and preparation method
A light-emitting diode, organic technology, applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices and other directions, can solve the problems of difficult operation, complex white light OLED process, poor repeatability, etc., and achieves low cost, good spectral stability, Excellent performance
Active Publication Date: 2017-06-23
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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[0004] In view of the above deficiencies in the prior art, the object of the present invention is to provide a white light organic light emitting diode device and a preparation method, aiming to solve the problems of complex, difficult to operate and poor repeatability of the existing white light OLED process
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[0032] The present invention provides a white light organic light emitting diode device and a preparation method. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] see figure 1 , figure 1 It is a schematic structural diagram of a preferred embodiment of a white light organic light emitting diode (white light OLED) device in the present invention, which includes an ITO anode 1, a hole injection layer 2, a hole transport electron blocking layer 3, and a light emission layer arranged from bottom to top. Functional layer 4, electron transport hole blocking layer 5, electron injection layer 6 and aluminum cathode 7, wherein, the light emitting functional layer 4 includes three layers from bottom to top:...
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The invention discloses a white light organic light emitting diode device and a preparation method. The white light organic light emitting diode device includes an ITO anode, a hole injection layer, a hole transport electron blocking layer, a light emission functional layer, an electron transport hole block layer, an electron injection layer and an aluminum cathode arranged from bottom to top, wherein the light emission The functional layer includes three layers: the first layer is an ultra-thin yellow fluorescent emitting layer, the second layer is a light color control layer of the main material, and the third layer is an ultra-thin blue fluorescent emitting layer. The OLED device of the invention has excellent performance, high color quality, good spectral stability, simple preparation process, low cost, energy saving, and easy realization of large-scale production. The invention plays an important role in promoting the research and development of complementary color white light OLEDs with high color quality and performance, and has great potential for industrial application in the field of solid-state white light lighting in the future.
Description
technical field [0001] The invention relates to the field of organic light emitting materials, in particular to a white light organic light emitting diode device and a preparation method. Background technique [0002] Organic light-emitting diodes (OLEDs) are mainly made of organic light-emitting small molecules and polymers as light-emitting materials, and are prepared by evaporation or spin coating. At present, OLED lighting products and OLED display panels have been mass-produced in mobile phone display terminals, lighting It is widely used in lighting and other fields. OLED has the advantages of self-luminescence, low driving voltage, fast response speed, high efficiency, high brightness, light and thin, and rollable. White light technology is a necessary technology to achieve full-color display and lighting. In order to obtain white light, doping is usually used in the processing technology. However, the doping process is complicated, the control time is long, it is no...
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IPC IPC(8): H01L51/52H01L51/56
CPCH10K50/80H10K71/00
Inventor 孟鸿徐汀缪景生刘铭贺超王成群李爱源
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL