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Organic electroluminescent device for simulating sunlight and its preparation method
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A technology for electroluminescence and sunlight, which is applied in the field of organic electroluminescence simulating sunlight and its preparation, can solve the problems of complex structure of the device, influence of repeatability, and increased requirements for preparation process, and achieves simple structure and simple process. , The effect of low preparation process requirements
Active Publication Date: 2017-07-11
FIFTH ELECTRONICS RES INST OF MINIST OF IND & INFORMATION TECH +1
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In addition, these devices are prepared by doping technology, which undoubtedly complicates the structure of the device and greatly increases the requirements for the preparation process.
Moreover, due to the strict and precise control of the concentration of the guest in the doping technology, the repeatability of the reported OLEDs with solar CCT characteristics will be greatly affected.
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Embodiment 1
[0099] An organic electroluminescence device A for simulating sunlight, the structure of the device A is: ITO / HAT-CN(100nm) / NPB(15nm) / TAPC(5nm) / Ir(piq) 3 (0.5nm) / TAPC(1.5nm) / Ir(dmppy) 2 (dpp)(0.9nm) / TAPC(3.5nm) / DSA-ph(0.5nm) / TmPyPB(35nm) / LiF(1nm) / Al(200nm).
[0100] Such as Figure 4 As shown, the structure of the device A is sequentially stacked by the following functional layers:
[0101] Substrate, anode, hole injection layer, hole transport layer, red phosphorescent layer, phosphorescent spacer layer, yellow phosphorescent layer, spacer layer, blue fluorescent layer, electron transport layer, electron injection layer, cathode.
[0102] The aforementioned substrate is glass.
[0103] The above-mentioned anode is an ITO thin film.
[0104] The above-mentioned hole injection layer is a 100 nm thick HAT-CN thin film.
[0105] The above hole transport layer includes a hole transport layer 1 and a hole transport layer 2 stacked in sequence, the hole transport layer 1 is a 1...
Embodiment 2
[0130] An organic electroluminescent device simulating sunlight, the organic electroluminescent device B, the structure of the device B is: ITO / HAT-CN(100nm) / NPB(15nm) / TAPC(5nm) / Ir(piq) 3 (0.2nm) / Ir(ppy) 3 (0.5nm) / TAPC(3.5nm) / DSA-ph(0.5nm) / TmPyPB(35nm) / LiF(1nm) / Al(200nm).
[0131] Such as Figure 6 As shown, the structure of the device B is sequentially stacked by the following functional layers:
[0132] Substrate, anode, hole injection layer, hole transport layer, red phosphorescent layer, green phosphorescent layer, spacer layer, blue fluorescent layer, electron transport layer, electron injection layer, cathode.
[0133] The aforementioned substrate is glass.
[0134] The above-mentioned anode is an ITO thin film.
[0135] The above hole injection layer is a 60nm thick HAT-CN thin film.
[0136] The above hole transport layer includes a hole transport layer 1 and a hole transport layer 2 stacked in sequence, the hole transport layer 1 is a 15 nm thick NPB film, and th...
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Abstract
The invention relates to an organic electroluminescent device for simulating sunlight and a preparation method thereof, belonging to the technical field of electroluminescent devices. The device includes a substrate, an anode, a cathode, and an organic functional layer between the anode and the cathode; the organic functional layer includes a blue fluorescent layer, a phosphorescent layer, and a spacer layer, and the spacer layer fluoresces blue The layer is separated from the phosphorescent layer; the blue fluorescent layer is made of non-doped luminescent material with a luminous wavelength of less than 500nm, and the phosphorescent layer includes a red phosphorescent layer, and the red phosphorescent layer is made of non-doped luminescent material with a luminous wavelength greater than 585nm The spacer layer is made of at least one hole-type organic semiconductor material whose hole mobility is greater than electron mobility. The organic electroluminescence device has the CCT characteristic of sunlight, can be prepared by non-doping technology, and has the advantages of simple structure and low preparation process requirements.
Description
technical field [0001] The invention relates to the technical field of electroluminescent devices, in particular to an organic electroluminescent device for simulating sunlight and a preparation method thereof. Background technique [0002] White OLED (Organic Light Emitting Diode) is a planar light-emitting device, which has the advantages of ultra-thin, large shape selectivity, suitable as a large-area light source, no need for heat dissipation, and simple processing. It is considered to be an ideal lighting source for the next generation. At the same time, white OLED can also replace ordinary LED light source, as the backlight source of modern mainstream liquid crystal display, realize ultra-thin liquid crystal display. White light OLED can also be combined with color filter film to realize color OLED display. Moreover, white light OLEDs can also be prepared into flexible devices to better serve human life. Therefore, white OLEDs have attracted more and more attention f...
Claims
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