CN115802806A - Organic light-emitting structure and light-emitting device - Google Patents
Organic light-emitting structure and light-emitting device Download PDFInfo
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Abstract
The invention discloses an organic light emitting structure and a light emitting device, the organic light emitting structure includes: the organic light emitting diode comprises a first electrode layer, a first organic light emitting layer, a second electrode layer, a second organic light emitting layer and a third electrode layer which are sequentially stacked; the distance between the first electrode layer and two adjacent surfaces of the second electrode layer is changed according to a first set rule, and/or the distance between the second electrode layer and two adjacent surfaces of the third electrode layer is changed according to a second set rule. The organic light-emitting structure provided by the invention can also present a certain pattern when the organic light-emitting structure is not powered on, so that the appearance effect of the organic light-emitting structure is improved.
Description
Technical Field
The present invention relates to the field of light emitting technologies, and in particular, to an organic light emitting structure and a light emitting device.
Background
An Organic Light Emitting Diode (OLED) refers to a device in which an Organic semiconductor material and a Light Emitting material can emit Light by carrier injection and recombination under the driving of an electric field. A display or a lighting product manufactured according to such a light emitting principle is called an organic light emitting display or an organic light emitting lighting device. The OLED structure has been widely used due to many advantages such as thin material, uniform light emission, and good light quality, however, the existing OLED structure has a single display effect.
Disclosure of Invention
The invention provides an organic light-emitting structure and a light-emitting device, which can present a certain pattern when the organic light-emitting structure is not powered on, and improve the appearance effect of the organic light-emitting structure.
According to an aspect of the present invention, there is provided an organic light emitting structure including:
the organic light emitting diode comprises a first electrode layer, a first organic light emitting layer, a second electrode layer, a second organic light emitting layer and a third electrode layer which are sequentially stacked;
the first electrode layer with the distance between two adjacent surfaces of second electrode layer is according to the first rule change of setting for, and/or, the second electrode layer with the distance between two adjacent surfaces of third electrode layer is according to the second rule change of setting for.
Optionally, when the distance between two adjacent surfaces of the first electrode layer and the second electrode layer changes according to a first set rule, the thickness of the first electrode layer changes according to the first set rule;
when the distance between the second electrode layer and the two adjacent surfaces of the third electrode layer is changed according to a second set rule, the thickness of the third electrode layer is changed according to the second set rule.
Optionally, when the thickness of the first electrode layer changes: the thickness of the first electrode layer varies in a gradient manner, or the thickness of the first electrode layer varies linearly, or the first electrode layer includes a plurality of first subregions arranged in an array manner, and the thicknesses of adjacent first subregions are different;
when the thickness of the second electrode layer changes: the thickness gradient of the second electrode layer changes, or the thickness of the second electrode layer changes linearly, or the second electrode layer includes a plurality of second subregions arranged in an array, and the thicknesses of the adjacent second subregions are different. Optionally, the first organic light emitting layer and the second organic light emitting layer have different light emitting colors.
Optionally, the thickness gradient of the first electrode layer is changed into a gradient increase or a gradient decrease according to a certain direction, or the thickness of a partial region is decreased, and the thickness of the partial region is unchanged;
the thickness gradient of the second electrode layer is changed into a gradient increase or a gradient decrease according to a certain direction, or the thickness of a partial area is reduced, and the thickness of the partial area is unchanged.
Optionally, the first organic light emitting layer and the second organic light emitting layer emit light of different colors.
Optionally, the thickness of the third electrode layer is fixed, and the third electrode layer undulates with the height of the second organic light emitting layer.
Optionally, the thickness of each of the first electrode layer and the second electrode layer is in a range of 3nm to 100nm.
Optionally, the material used for the semi-transparent electrode includes at least one of aluminum, magnesium and silver.
Optionally, the light emitting colors of the first organic light emitting layer and the second organic light emitting layer are respectively one of red, green, blue, yellow, orange-red and light red.
According to an aspect of the present invention, there is provided a light emitting device, including a substrate, the organic light emitting structure according to any of the embodiments disposed on the substrate, and an encapsulation layer disposed on a side of the organic light emitting structure away from the substrate.
The organic light-emitting structure provided by the technical scheme of the embodiment of the invention comprises: the organic light emitting diode comprises a first electrode layer, a first organic light emitting layer, a second electrode layer, a second organic light emitting layer and a third electrode layer which are sequentially stacked; the distance between the adjacent surfaces of the first electrode layer and the second electrode layer is changed according to a first set rule, and/or the distance between the adjacent surfaces of the second electrode layer and the third electrode layer is changed according to a second set rule, so that the lengths of cavities at different positions of a microcavity formed inside the organic light-emitting structure are different, when the organic light-emitting structure is not electrified, when ambient light enters the organic light-emitting structure, because the lengths of the cavities at different positions of the organic light-emitting structure are different, under the action of the microcavity, the wavelengths of the ambient light emitted from different cavity lengths of the organic light-emitting structure are different, so that when the organic light-emitting structure is not electrified, a certain pattern can be displayed, and the appearance effect of the organic light-emitting structure is improved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of an organic light emitting structure provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of another organic light-emitting structure provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of another organic light emitting structure provided by an embodiment of the invention;
fig. 4 is a schematic diagram of another organic light emitting structure provided by an embodiment of the invention;
FIG. 5 is a top view of a first electrode layer according to an embodiment of the invention;
fig. 6 is a schematic view of another organic light emitting structure provided by an embodiment of the present invention;
fig. 7 is a schematic view of another organic light emitting structure provided by an embodiment of the present invention;
fig. 8 is a schematic view of a light-emitting device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
An embodiment of the present invention provides an organic light emitting structure, and fig. 1 is a schematic diagram of an organic light emitting structure provided in an embodiment of the present invention, and referring to fig. 1, the organic light emitting structure includes: a first electrode layer 10, a first organic light emitting layer 20, a second electrode layer 30, a second organic light emitting layer 40, and a third electrode layer 50, which are sequentially stacked; the distance between the adjacent surfaces of the first electrode layer 10 and the second electrode layer 30 varies according to a first set law, and/or the distance between the adjacent surfaces of the second electrode layer 30 and the third electrode layer 50 varies according to a second set law.
The second electrode layer 30 is a common electrode, the first electrode layer 10, the first organic light emitting layer 20 and the second electrode layer 30 can form one group of OLED structure, and the second electrode layer 30, the second organic light emitting layer 40 and the third electrode layer 50 can form another group of OLED structure. The first organic light emitting layer 20 and the second organic light emitting layer 40 may be provided as light emitting layers of arbitrary light emitting colors as needed, and illustratively, the light emitting colors of the first organic light emitting layer 20 and the second organic light emitting layer 40 are one of red, green, blue, yellow, orange-red, and light-red, respectively. The first setting rule may be that the thickness of the partial region is gradually reduced along a certain direction, or gradually increased along a certain direction, or first increased or decreased along a certain direction, or the thickness of the partial region is different from the thickness of another partial region, and the like, and the second setting rule may be that the thickness of the partial region is gradually reduced along a certain direction, or first increased or decreased along a certain direction, or the thickness of the partial region is different from the thickness of another partial region, and the like.
For example, referring to fig. 1, when the distance between the adjacent surfaces of the first electrode layer 10 and the second electrode layer 30 changes according to a predetermined rule, if the first electrode layer 10 is a reflective electrode, the second electrode layer 30 is a semi-transmissive electrode, or the third electrode layer 50 is a reflective electrode, the second electrode layer 30 and the first electrode layer 10 are semi-transmissive electrodes, the first electrode layer 10, the second electrode layer 30 and the first organic layer 20 form a microcavity, and the distance between the adjacent surfaces of the first electrode layer 10 and the second electrode layer 30 is the length of the microcavity, the length of the microcavity changes according to the predetermined rule, the lengths of the microcavity are different, and the light extraction effect is different. When the electrode of the organic light-emitting structure is not electrified, when the ambient light enters the organic light-emitting structure, because the lengths of the micro cavities at different positions of the organic light-emitting structure are different, and the wavelengths of the ambient light emitted from different cavity lengths of the organic light-emitting structure are different under the action of the micro cavities, certain patterns can be presented when the organic light-emitting structure is not electrified, and the appearance effect of the organic light-emitting structure is improved.
Continuing to refer to fig. 1, if the first electrode layer 10 is a reflective electrode, the third electrode layer 30 is a semi-transparent electrode, or the third electrode layer 30 is a reflective electrode, the first electrode layer 10 is a semi-transparent electrode, the first electrode layer 10, the third electrode layer 30 and the structure between the first electrode layer 10 and the third electrode layer 30 form a microcavity, the distance between the adjacent surfaces of the first electrode layer 10 and the third electrode layer 50 is the cavity length of the microcavity, the distance between the adjacent surfaces of the first electrode layer 10 and the second electrode layer 30 changes according to a set rule, and when the thickness of the film layer between the second electrode layer 30 and the third electrode layer 50 is uniform, the cavity length of the microcavity changes according to the set rule. When the electrode of the organic light-emitting structure is not electrified, when the ambient light enters the organic light-emitting structure, because the lengths of the micro-cavities at different positions of the organic light-emitting structure are different, the wavelengths of the ambient light emitted from different positions of the micro-cavities of the organic light-emitting structure are different under the action of the micro-cavities, so that certain patterns can be presented when the organic light-emitting structure is not electrified, and the appearance effect of the organic light-emitting structure is improved.
Fig. 2 is a schematic diagram of another organic light emitting structure according to an embodiment of the present invention, and referring to fig. 2, when a distance between adjacent surfaces of a second electrode layer 30 and a third electrode layer 50 changes according to a predetermined rule, if a first electrode layer 10 is a reflective electrode, and the second electrode layer 30 and the third electrode layer 50 are semi-transmissive electrodes, or the third electrode layer 50 is a reflective electrode, and the second electrode layer 30 is a semi-transmissive electrode, a microcavity may be formed between the second electrode layer 30 and the third electrode layer 50, and a distance between adjacent surfaces of the second electrode layer 30 and the third electrode layer 50 is a microcavity length, the microcavity length changes according to a second predetermined rule. When the electrode of the organic light-emitting structure is not electrified, when the ambient light enters the organic light-emitting structure, due to the fact that the lengths of the micro cavities at different positions of the organic light-emitting structure are different, under the action of the micro cavities, the wavelengths of the ambient light emitted from different cavity length positions of the organic light-emitting structure are different, so that when the organic light-emitting structure is not electrified, a certain pattern can be displayed, and the appearance effect of the organic light-emitting structure is improved.
Fig. 3 is a schematic diagram of another organic light emitting structure provided in an embodiment of the present invention, and referring to fig. 3, when a distance between adjacent surfaces of a first electrode layer 10 and a second electrode layer 30 changes according to a predetermined rule, and a distance between adjacent surfaces of the second electrode layer 30 and a third electrode layer 50 changes according to the predetermined rule, the first electrode layer 10 is a reflective electrode, the second electrode layer 30 may be a semi-transmissive electrode, a microcavity may be formed between the first electrode layer 10 and the third electrode layer 50, or both the second electrode layer 30 and the third electrode layer 50 may be semi-transmissive electrodes, a microcavity may be formed between the second electrode layer 30 and the third electrode layer 50, or a microcavity may be formed between the first electrode layer 10 and the second electrode layer 30. The cavity length of each microcavity changes, so that when ambient light enters the organic light-emitting structure, under the action of the microcavities, the wavelengths of the ambient light emitted from different cavity length positions of the organic light-emitting structure are different, so that when the organic light-emitting structure is not powered on, a certain pattern can be presented, and the appearance effect of the organic light-emitting structure is improved. In addition, when the third electrode layer 50 is a reflective electrode, the operation principle is the same as that of the above embodiment, and is not repeated herein.
The technical scheme of the embodiment of the invention provides an organic light-emitting structure which comprises: a first electrode layer 10, a first organic light emitting layer 20, a second electrode layer 30, a second organic light emitting layer 40, and a third electrode layer 50, which are sequentially stacked; the distance between the adjacent surfaces of the first electrode layer 10 and the second electrode layer 30 is changed according to a first set rule, and/or the distance between the adjacent surfaces of the second electrode layer 30 and the third electrode layer 50 is changed according to a second set rule, so that the lengths of cavities at different positions of a microcavity formed inside the organic light-emitting structure are different, when the organic light-emitting structure is not powered on, when ambient light enters the organic light-emitting structure, because the lengths of the microcavities at different positions of the organic light-emitting structure are different, under the action of the microcavity, the wavelengths of the ambient light emitted from different cavity lengths of the organic light-emitting structure are different, so that when the organic light-emitting structure is not powered on, a certain pattern can be also presented, and the appearance effect of the organic light-emitting structure is improved.
Optionally, referring to fig. 1, when the distance between two adjacent surfaces of the first electrode layer 10 and the second electrode layer 30 changes according to a first set rule, the thickness of the first electrode layer 10 changes according to the first set rule;
referring to fig. 2, when the distance between two adjacent surfaces of the second electrode layer 30 and the third electrode layer 50 is changed according to a second set rule, the thickness of the third electrode layer 50 is changed according to the second set rule.
Specifically, in the fabrication of the organic light emitting structure, the first electrode layer 10, the first organic layer 20, the second electrode layer 30, the second organic layer 40, and the third electrode layer 50 may be sequentially fabricated on the substrate. The thickness of the first electrode layer 10 changes according to a first set rule, that is, the surface of the first electrode layer 10 adjacent to the substrate is a flat surface, the surface of the first electrode layer 10 adjacent to the second electrode layer 20 is fluctuated, subsequently, when the first organic layer 20 is manufactured, the first organic layer 20 is directly manufactured on the surface of the first electrode layer 10 with the fluctuated surface, the surface of the first organic layer 20 far away from the first electrode layer 10 can be a flat surface, and the thickness changes according to the first set rule after the first organic layer 20 is manufactured.
The thickness of the second electrode layer 30 changes according to a second set rule, that is, the surface of the second electrode layer 30 adjacent to the first electrode layer 10 is a flat surface, the surface of the second electrode layer 30 far away from the first electrode layer 10 is undulated, and subsequently, when the second organic layer 40 is manufactured, the second organic layer 40 is directly manufactured on the surface of the second electrode layer 30 with undulated height, and the surface of the second organic layer 40 far away from the second electrode layer 30 can be a flat surface, so that the thickness of the second organic layer 40 after the manufacturing is completed changes according to the second set rule.
Optionally, when the thickness of the first electrode layer 10 changes: fig. 4 is a schematic diagram of another organic light emitting structure provided in an embodiment of the present invention, and referring to fig. 3 and 4, a thickness gradient of the first electrode layer 10 changes, or fig. 5 is a schematic diagram of another organic light emitting structure provided in an embodiment of the present invention, and referring to fig. 5, a thickness of the first electrode layer 10 changes linearly, or fig. 6 is a top view of a first electrode layer provided in an embodiment of the present invention, and referring to fig. 6, the first electrode layer 10 includes a plurality of first sub-regions 11 arranged in an array, and thicknesses of adjacent first sub-regions 11 are different.
When the thickness of the second electrode layer 20 varies: the thickness gradient of the second electrode layer varies, or the thickness of the second electrode layer 20 varies linearly, or the second electrode layer 20 includes a plurality of second subregions arranged in an array, and the thicknesses of the adjacent second subregions are different.
Referring to fig. 3 and 4, the thickness gradient of the first electrode layer 10 may be gradually increased or gradually decreased in a certain direction as shown in fig. 4, or may be partially decreased and partially unchanged as shown in fig. 3. Referring to fig. 5, the thickness of the first electrode layer 10 varies linearly, that is, the thickness of the first electrode layer 10 continuously increases or continuously decreases or increases first and then decreases in a certain direction.
The thickness gradient or the linear change of the first electrode layer 10 is set, or the first electrode layer 10 comprises a plurality of first subregions 11 arranged in an array, and the thicknesses of the adjacent first subregions 11 are different, so that the length change of the microcavity is more diversified, and when the organic light-emitting structure is not electrified, the color change of the ambient light emitted by the organic light-emitting structure is more diversified, and the appearance effect of the organic light-emitting structure is better.
Similarly, the thickness gradient of the second electrode layer may be gradually increased or gradually decreased along a certain direction, or the thickness of a partial region may be decreased and the thickness of a partial region may be unchanged. The thickness of the second electrode layer 30 varies linearly, that is, the thickness of the second electrode layer 30 continuously increases, or continuously decreases, or increases after decreasing, or decreases after increasing, along a certain direction.
The thickness gradient or the linear change of the second electrode layer 30 is set, or the second electrode layer 20 includes a plurality of second subregions arranged in an array, and the thicknesses of the adjacent second subregions are different, so that the microcavity length changes more variously, and when the organic light-emitting structure is not powered on, the color change of the ambient light emitted by the organic light-emitting structure is more varied, and the appearance effect of the organic light-emitting structure is better.
Optionally, the first organic light emitting layer and the second organic light emitting layer have different light emitting colors.
Specifically, by controlling the first electrode layer 10, the second electrode layer 30 and the third electrode layer 50, the organic light emitting structure may emit light only from the first organic light emitting layer 20, may emit light only from the second organic light emitting layer 40, may emit light from both the first organic light emitting layer 20 and the second organic light emitting layer 40, and the light emitting colors of the first organic light emitting layer 20 and the second organic light emitting layer 40 are different, so that the light emitting colors of the organic light emitting structure are more various, and the color change display of the organic light emitting structure can be realized.
Illustratively, the first organic light emitting layer 20 and the second organic light emitting layer 40 may emit red light and green light, yellow and blue light, and the like, as opposed to each other, or may emit light red and orange red light, and the like, at similar color temperatures.
Alternatively, fig. 7 is a schematic diagram of another organic light emitting structure provided in the embodiment of the invention, and referring to fig. 7, a thickness of the third electrode layer 50 is fixed, and the third electrode layer 50 fluctuates with the height of the second organic light emitting layer 40.
When the second organic layer 40 is manufactured, the surface of the second organic layer 40 away from the second electrode 30 is not completely a flat surface, and the third electrode layer 50 fluctuates with the height of the second organic light emitting layer 40, i.e., a corrugated structure is formed, so that the ratio of plasma modes can be reduced, the loss of photons emitted by the light emitting layer at the interface of the third electrode layer can be reduced, and the light emitting efficiency can be improved.
Optionally, the thickness ranges of the first electrode layer and the second electrode layer are both 3nm to 100nm, and the thicknesses of the first electrode layer and the second electrode layer may be 30nm and 60nm.
If the thicknesses of the first electrode layer and the second electrode layer are less than 3nm, the manufacturing process is difficult; if the thickness of the first electrode layer and the second electrode layer is greater than 100nm, light transmittance may be low. The thickness range of the first electrode layer and the second electrode layer is 3nm-100nm, and the first electrode layer and the second electrode layer are guaranteed to have high light transmittance while the manufacturing process difficulty of the first electrode layer and the second electrode layer is reduced.
Optionally, the material used for the semi-transparent electrode includes at least one of aluminum, magnesium and silver.
Wherein, the light transmittance of the semi-transparent electrode can be more than or equal to 50% and less than or equal to 80%. The aluminum, the magnesium and the silver have high light transmittance, the manufacturing process is mature, the process for manufacturing the semi-transparent electrode by adopting the materials is simple, and the light transmittance of the semi-transparent electrode is high.
Optionally, the light emitting colors of the first organic light emitting layer and the second organic light emitting layer are respectively one of red, green, blue, yellow, orange-red and light red.
Optionally, referring to fig. 1, when the distance between two adjacent surfaces of the first electrode layer 10 and the second electrode layer 20 changes according to a first predetermined rule, the first organic light emitting layer 20 is a blue light emitting layer; referring to fig. 2, when the distance between two adjacent surfaces of the second electrode layer 30 and the third electrode layer 50 is changed according to a second predetermined rule, the second organic light emitting layer 40 is a blue light emitting layer.
Specifically, referring to fig. 1, when the distance between two adjacent surfaces of the first electrode layer 10 and the second electrode layer 20 changes according to a first set rule, the surface of the first electrode layer 10 fluctuates to form a corrugated structure, so that the ratio of the plasma mode can be reduced, the loss of photons emitted by the first light emitting layer 20 at the interface of the first electrode layer 10 can be reduced, the light emitting efficiency can be improved, and the blue light emitting efficiency can be improved by setting the first light emitting layer 10 as a blue light emitting layer.
Referring to fig. 2, when the distance between two adjacent surfaces of the second electrode layer 30 and the third electrode layer 50 changes according to a second setting rule, the surface of the second electrode layer 30 fluctuates to form a corrugated structure, so that the ratio of plasma modes can be reduced, the loss of photons emitted by the second light emitting layer 40 at the interface of the second electrode layer 30 is reduced, and the light emitting efficiency is improved, and the blue light emitting efficiency can be improved by setting the second light emitting layer 40 as a blue light emitting layer.
The embodiment of the present invention further provides a light emitting device on the basis of the above embodiment, fig. 8 is a schematic diagram of the light emitting device provided in the embodiment of the present invention, and referring to fig. 8, the light emitting device includes a substrate 60, an organic light emitting structure 100 according to any embodiment disposed on the substrate 60, and an encapsulation layer 70 disposed on a side of the organic light emitting structure 100 away from the substrate 60.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An organic light emitting structure, comprising:
the organic light emitting diode comprises a first electrode layer, a first organic light emitting layer, a second electrode layer, a second organic light emitting layer and a third electrode layer which are sequentially stacked;
the distance between the first electrode layer and two adjacent surfaces of the second electrode layer is changed according to a first set rule, and/or the distance between the second electrode layer and two adjacent surfaces of the third electrode layer is changed according to a second set rule.
2. The organic light emitting structure of claim 1, wherein:
when the distance between two adjacent surfaces of the first electrode layer and the second electrode layer is changed according to a first set rule, the thickness of the first electrode layer is changed according to the first set rule;
when the distance between the second electrode layer and the two adjacent surfaces of the third electrode layer is changed according to a second set rule, the thickness of the third electrode layer is changed according to the second set rule.
3. The organic light emitting structure of claim 2, wherein:
when the thickness of the first electrode layer changes: the thickness of the first electrode layer is changed in a gradient manner, or the thickness of the first electrode layer is changed linearly, or the first electrode layer comprises a plurality of first subregions arranged in an array manner, and the thicknesses of the adjacent first subregions are different;
when the thickness of the second electrode layer changes: the thickness gradient of the second electrode layer changes, or the thickness of the second electrode layer changes linearly, or the second electrode layer includes a plurality of second subregions arranged in an array, and the thicknesses of the adjacent second subregions are different.
4. The organic light emitting structure of claim 3, wherein:
the thickness gradient of the first electrode layer is changed into a gradient increase or a gradient decrease according to a certain direction, or the thickness of a partial area is reduced, and the thickness of the partial area is unchanged;
the thickness gradient of the second electrode layer is changed into a gradient increase or a gradient decrease according to a certain direction, or the thickness of a partial area is reduced, and the thickness of the partial area is unchanged.
5. The organic light emitting structure of claim 1, wherein:
the first organic light emitting layer and the second organic light emitting layer have different emission colors.
6. The organic light emitting structure of claim 1, wherein:
the thickness of the third electrode layer is fixed, and the third electrode layer fluctuates along with the second organic light-emitting layer.
7. The organic light emitting structure of claim 1, wherein:
the thickness ranges of the first electrode layer and the second electrode layer are both 3nm-100nm.
8. The organic light emitting structure of claim 1, wherein:
the material adopted by the semi-transparent electrode comprises at least one of aluminum, magnesium and silver.
9. The organic light emitting structure of claim 3, wherein:
the light emitting colors of the first organic light emitting layer and the second organic light emitting layer are respectively one of red, green, blue, yellow, orange red and light red.
10. A light-emitting device comprising a substrate, at least one organic light-emitting structure according to any one of claims 1-9 disposed on the substrate, and an encapsulation layer disposed on a side of the organic light-emitting structure away from the substrate.
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| CN117133833A (en) * | 2023-10-20 | 2023-11-28 | 长春理工大学 | Spectrum detector chip, preparation method thereof and spectrum detector |
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| CN117133833A (en) * | 2023-10-20 | 2023-11-28 | 长春理工大学 | Spectrum detector chip, preparation method thereof and spectrum detector |
| CN117133833B (en) * | 2023-10-20 | 2024-03-29 | 长春理工大学 | Spectrum detector chip, preparation method thereof and spectrum detector |
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