Organic photoelectric detector and equipment comprising same

Abstract

The utility model relates to the technical field of photoelectric equipment, in particular to an organic photoelectric detector and equipment comprising the organic photoelectric detector, and the organic photoelectric detector comprises an anode and a cathode; one end, far away from the cathode, of the anode is arranged on the transparent glass substrate; a hole transport layer is arranged at one end, far away from the transparent glass substrate, of the anode; an electron transport layer is arranged at one end, close to the anode, of the cathode; an active layer is arranged between the hole transport layer and the electron transport layer; the active layer is composed of at least two aggregation layers, and each aggregation layer comprises a graphene-azo sub-layer, a graphene-perylene sub-layer and a graphene-phthalocyanine sub-layer which are sequentially arranged in the longitudinal direction. Through collaborative design of a graphene grid thin layer structure and various photosensitive pigments, the generation, separation and migration efficiency of photon-generated carriers is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of optoelectronic equipment technology, and in particular to an organic photodetector and a device including the organic photodetector. Background Technology

[0002] Organic photodetectors (OPDs) are photoelectric conversion devices based on organic semiconductor materials, whose core function is to efficiently convert optical signals into electrical signals. With the rapid development of flexible electronics, wearable devices, and optical communication technologies, OPDs have become a research hotspot in the field of photoelectric detection due to their advantages such as low cost, solution fabrication, and flexible integration. Research on organic photodetectors began in the 1980s. In 1981, Kudo and Morizumi first fabricated an organic photodetector that could respond to light of a specific wavelength without the need for an external filter, laying the foundation for this field. In 1989, FFSo et al. further promoted the development of organic photodetectors by growing a thin film of the organic material PTCDA on a Si substrate and measuring an external quantum efficiency of 85% at an external voltage of -10V.

[0003] Patent publication numbers CN115440892A and CN116249421A both disclose organic photodetectors and electronic devices including such detectors. However, in terms of structure, CN115440892A has a relatively simple structure, mainly consisting of a hole transport layer and an activation layer, resulting in mediocre device performance. While CN116249421A mentions a multi-layered structure for the active layer, its active layer material is of a single type, limiting its functional diversity. Furthermore, both patent documents lack protective measures for the cathode, which is prone to failure due to corrosion in the optoelectronic field. Utility Model Content

[0004] The purpose of this application is to provide an organic photodetector to solve at least one of the technical problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, this application provides an organic photodetector, comprising: a transparent glass substrate, an anode, and a cathode;

[0006] The end of the anode furthest from the cathode is disposed on the transparent glass substrate;

[0007] A hole transport layer is provided at the end of the anode away from the transparent glass substrate;

[0008] An electron transport layer is provided at the end of the cathode near the anode;

[0009] An active layer is disposed between the hole transport layer and the electron transport layer.

[0010] Furthermore, the active layer is a graphene layer coated with any one of azo, perylene, or phthalocyanine photosensitive pigments, or the active layer is composed of no less than two aggregate layers, each aggregate layer comprising a graphene-azo sublayer, a graphene-perylene sublayer, and a graphene-phthalocyanine sublayer arranged sequentially in the longitudinal direction.

[0011] Furthermore, the graphene-azo sublayer comprises a thin graphene grid layer and an azo photosensitive pigment layer disposed thereon;

[0012] The graphene-perylene sublayer includes a graphene mesh thin layer and a perylene-based high-photosensitive pigment layer disposed thereon;

[0013] The graphene-phthalocyanine sublayer comprises a graphene mesh thin layer and a phthalocyanine photosensitive pigment layer disposed thereon.

[0014] Furthermore, the graphene mesh thin layer includes a bottom wall, side walls, horizontal mesh pillars, and vertical mesh pillars;

[0015] The sidewall is located at the edge of the bottom wall;

[0016] The vertical grid columns are arranged in an equidistant array on the bottom wall;

[0017] A horizontal grid post is provided at the end of the vertical grid post that is away from the bottom wall;

[0018] The horizontal grid pillars are square grid structures, and the nodes of the grid are connected to the vertical grid pillars.

[0019] Furthermore, the azo photosensitive pigment, the perylene photosensitive pigment, and the phthalocyanine photosensitive pigment coated on the graphene mesh layer form interconnected pigment layers within the mesh of the graphene mesh layer.

[0020] Furthermore, the electron transport layer comprises an upper ZnO sublayer and at least one lower ZnO sublayer;

[0021] The upper and lower end faces of the ZnO sublayer are coated with a PNID modification layer.

[0022] The lower end face of the ZnO sublayer is coated with a PNID modification layer.

[0023] Furthermore, the transparent glass substrate is made of indium tin oxide conductive glass, which is used to provide physical support, optical transmission and electrical insulation for other structures.

[0024] Furthermore, the anode is a zinc electrode.

[0025] Furthermore, the cathode is a gold-silver-aluminum composite electrode.

[0026] Furthermore, the gold-silver-aluminum composite electrode comprises a gold layer, a silver layer, and an aluminum layer;

[0027] The aluminum layer is disposed in the innermost layer as an inner layer substrate;

[0028] The gold layer is placed on the outermost side to protect the inner silver and aluminum layers from oxidation;

[0029] The silver layer is disposed between the gold layer and the aluminum layer to improve the electron transfer efficiency between the aluminum layer and the gold layer.

[0030] Furthermore, the hole transport layer is a PEDOT:PSS aqueous solution, used to transport holes and thereby optimize device performance.

[0031] On the other hand, this application also discloses a device including an organic photodetector. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of an organic photodetector;

[0034] Figure 2 A schematic diagram of the three-dimensional structure of the assembly layer.

[0035] Figure 3 A schematic diagram of the three-dimensional structure of a graphene mesh thin layer.

[0036] Figure 4 A cross-sectional view showing the pigment layer positioned behind a graphene mesh layer;

[0037] Figure 5 A three-dimensional structural diagram of an explosion in the vertical direction of the electron transport layer;

[0038] Figure 6 This is a schematic diagram of the three-dimensional structure of the electron transport layer;

[0039] Figure 7 This is a cross-sectional view of a gold-silver-aluminum composite electrode.

[0040] Figure label:

[0041] 1-Anode; 2-Cathode; 3-Transparent glass substrate; 4-Hole transport layer; 5-Electron transport layer; 6-Active layer; 7-Gold layer; 8-Silver layer; 9-Aluminum layer; 10-Graphene-azo sublayer; 11-Graphene-perylene sublayer; 12-Graphene-phthalocyanine sublayer; 13-Graphene mesh thin layer; 14-Bottom wall; 15-Side wall; 16-Horizontal mesh pillar; 17-Vertical mesh pillar; 18-Pigment layer; 19-ZnO upper sublayer; 20-ZnO lower sublayer; 21-PNID modified layer; 22-Collection layer. Detailed Implementation

[0042] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed in this application to further explain the specific application content, and these settings can be combined or used in conjunction with each other.

[0046] The present application will be further explained below with reference to specific implementation methods.

[0047] like Figure 1 As shown, this embodiment provides an organic photodetector, including: a transparent glass substrate 3, an anode 1, and a cathode 2;

[0048] The end of the anode 1 away from the cathode 2 is disposed on the transparent glass substrate 3;

[0049] A hole transport layer 4 is provided at the end of the anode 1 away from the transparent glass substrate 3;

[0050] An electron transport layer 5 is provided at the end of the cathode 2 near the anode 1;

[0051] An active layer 6 is disposed between the hole transport layer 4 and the electron transport layer 5.

[0052] The active layer is a graphene layer coated with any one of azo, perylene, or phthalocyanine photosensitive pigments, or the active layer consists of no less than two aggregate layers.

[0053] like Figure 2 As shown, as a further embodiment of this example, the active layer is composed of no less than two aggregate layers 22, each aggregate layer 22 including a graphene-azo sublayer 10, a graphene-perylene sublayer 11 and a graphene-phthalocyanine sublayer 12 arranged sequentially in the longitudinal direction;

[0054] The graphene-azo sublayer 10 includes a graphene mesh thin layer 13 and an azo photosensitive pigment layer disposed thereon;

[0055] The graphene-perylene sublayer 11 includes a graphene mesh thin layer 13 and a perylene-based high-photosensitive pigment layer disposed thereon;

[0056] The graphene-phthalocyanine sublayer 12 includes a graphene mesh thin layer 13 and a phthalocyanine photosensitive pigment layer disposed thereon.

[0057] like Figure 3 As shown, as a further embodiment of this example, the graphene mesh thin layer 13 includes a bottom wall 14, side walls 15, horizontal mesh pillars 16 and vertical mesh pillars 17.

[0058] The sidewall 15 is disposed at the edge of the bottom wall 14;

[0059] The vertical grid columns 17 are arranged in an array on the bottom wall 14;

[0060] A horizontal grid post 16 is provided at the end of the vertical grid post 17 that is away from the bottom wall 14;

[0061] The horizontal grid post 16 has a rectangular grid structure, and the nodes of the grid are connected to the vertical grid post 17.

[0062] like Figure 4As shown, as a further embodiment of this example, the azo photosensitive pigment, the perylene photosensitive pigment, and the phthalocyanine photosensitive pigment coated on the graphene mesh thin layer 13 form a connected pigment layer 18 within the mesh of the graphene mesh thin layer.

[0063] In the azo-graphene system, the cis-trans isomerization of azobenzene under illumination alters the molecular configuration, perturbing the π-electron cloud distribution of graphene and accelerating interfacial charge separation. Experiments show that the standard free energy of a single azobenzene molecule in the RGO-AZO-3 composite reaches 1.42 eV, which is 32.7% higher than that of pure azobenzene. In the perylene-graphene system, after the perylene pigment absorbs infrared light, excited-state electrons are injected into graphene through π-π interactions, forming long-lived charge carriers. The photocurrent density is increased by 40% after perylene red 149 is combined with graphene. In the phthalocyanine-graphene system, phthalocyanine absorbs photons in the visible light region (600-700 nm), and excited electrons are efficiently transported to the electrode via graphene. The photoelectric conversion efficiency of the AlPc / graphene composite material reaches 0.7%, which is higher than that of pure phthalocyanine devices.

[0064] This embodiment uses graphene as a substrate and enables the three photosensitive pigments to work synergistically. Multiple aggregate layers 22 are set up, including a graphene-azo sublayer 10, a graphene-perylene sublayer 11, and a graphene-phthalocyanine sublayer 12 arranged in sequence in the vertical direction. This allows the three photosensitive pigments to achieve a synergistic effect on an extremely thin graphene mesh layer 13, even though they are not mixed.

[0065] Three photosensitive pigments are initially in a supersaturated solution and immersed in the graphene mesh 13. After the water in the photosensitive pigments evaporates, the photosensitive material is deposited and solidified, forming a stable pigment layer 18 within the graphene mesh. Because the pigment layers 18 are interconnected within the mesh and encapsulate each vertical grid post 17, the physical properties of the pigment layers 18 are very stable. Compared with the simple brushing commonly used in existing technologies, this method can minimize the impact of localized pigment layer detachment.

[0066] Because the three photosensitive pigments have different particle sizes, surface properties, and polarities, direct mixing will result in uneven dispersion and stratification. Coating the mixed photosensitive pigments onto a graphene mesh layer in this case will lead to poor dispersibility. To achieve synergistic effects among the three photosensitive pigments while avoiding poor dispersibility after mixing, this application separately sets up graphene-azo sublayers, graphene-perylene sublayers, and graphene-phthalocyanine sublayers, each with a thickness of no more than 20 nm, preferably 12 nm. By setting a relatively thin graphene mesh layer at the microscopic level, the three photosensitive pigments achieve synergistic and uniform macroscopic effects.

[0067] like Figure 5-6As shown, as a further embodiment of this example, the electron transport layer 5 includes an upper ZnO sublayer 19 and at least one lower ZnO sublayer 20.

[0068] The upper and lower end faces of the ZnO sublayer 19 are coated with a PNID modification layer 21;

[0069] The lower end face of the ZnO sublayer 20 is coated with a PNID modification layer 21.

[0070] In this embodiment, electron transport layer 5 is responsible for transporting electrons and blocking holes. PNID lowers the electron transport barrier by adjusting the work function of the ZnO surface. PNID modification layer 21 can fill ZnO surface defects (such as oxygen vacancies) and reduce charge recombination centers. In addition, the modification layer can promote the formation of a better interpenetrating network structure between the active layer and ZnO, improving charge extraction efficiency. Experimental studies show that the photoresponsivity of the PNID-modified ZnO electron transport layer 5 used in this application can reach 0.46 A / W, which is 171% higher than that of the unmodified electron transport layer 5. Moreover, the multilayer ZnO structure forms a stepped electron transport channel through gradient design of thickness or doping concentration, reducing electron accumulation at the interface. In contrast, the single ZnO sheet used in the prior art has a simple structure, lacks gradient control, and has insufficient uniformity of electron transport paths, which can easily lead to excessively high local electron concentrations and increase the recombination probability.

[0071] As a further embodiment of this invention, the transparent glass substrate 3 is made of indium tin oxide conductive glass, which is used to provide physical support, optical transmission and electrical insulation for other structures.

[0072] The transparent glass substrate 3 serves as the physical support structure for the organic photodetector, undertaking multiple key functions such as optics, electronics, and process compatibility. Its performance directly determines the efficiency, stability, and application scenarios of the device.

[0073] As a further embodiment of this example, the anode 1 is a zinc electrode.

[0074] The anode 1 is the core component of the organic photodetector, mainly responsible for the efficient collection and transmission of holes, and plays a key role in the photoelectric conversion efficiency, stability and structural design of the organic photodetector.

[0075] As a further embodiment of this example, the cathode 2 is a gold-silver-aluminum composite electrode.

[0076] like Figure 7 As shown, as a further embodiment of this example, the gold-silver-aluminum composite electrode includes a gold layer 7, a silver layer 8, and an aluminum layer 9.

[0077] The aluminum layer 9 is disposed in the innermost layer as an inner layer substrate;

[0078] The gold layer 7 is located on the outermost side to protect the inner silver layer 8 and aluminum layer 9 from oxidation;

[0079] The silver layer 8 is disposed between the gold layer 7 and the aluminum layer 9 to improve the electron transfer efficiency between the aluminum layer 9 and the gold layer 7.

[0080] The cathode 2 enables efficient electron collection and extraction, charge transport, and involves energy level matching, optical modulation, and the stability of organic photodetectors.

[0081] Of the three materials used in the composite electrode of this application, silver has the best conductivity (the highest among metals), but it is expensive; aluminum has the second best conductivity and is cheaper, but it is easily oxidized; gold has moderate conductivity but extremely strong oxidation resistance. The gold-silver-aluminum composite electrode uses aluminum as the base material to reduce costs, and then plates the surface with silver and then gold, which ensures high conductivity and protects aluminum and silver from performance degradation through the oxidation resistance of gold.

[0082] In terms of thermal performance, all three materials are low-emissivity metals, which can reduce heat radiation loss when used as radiation shields. Gold has extremely high chemical stability and can maintain surface integrity at high temperatures. The composite structure can match the thermal expansion coefficients of different components, reduce deformation caused by thermal stress, and improve equipment accuracy and lifespan.

[0083] Furthermore, alloy cathodes 2 (such as platinum-barium and palladium-barium) have higher secondary electron emission coefficients than pure metals. Silver-aluminum-gold composite cathodes 2 may improve emission efficiency by optimizing surface morphology and increasing electron emission sites through synergistic effects between materials.

[0084] From a cost perspective, aluminum costs only about 1 / 50th of silver and about 1 / 1000th of gold. Using aluminum as the base material and partially plating it with silver and gold can significantly reduce the amount of precious metals used while ensuring key performance characteristics. During processing, silver-aluminum alloys have good ductility, making them easy to process into complex shapes (such as electronic component leads and heat sinks), suitable for mass production. The plasticity of composite materials can also reduce processing steps, further reducing costs.

[0085] In use, the oxidation resistance of gold and the corrosion resistance of aluminum make the composite cathode 2 more stable in humid, high-temperature, or corrosive environments. The fatigue resistance of the silver-aluminum alloy is 2-3 times that of pure aluminum, extending the service life of the equipment. Furthermore, the thermal expansion coefficient of the composite material can be matched with other components (such as ceramics and glass), avoiding accuracy drift caused by temperature changes. For example, in precision instruments, the thermal stability of the composite cathode 2 can improve the long-term reliability of the equipment.

[0086] The gold-silver-aluminum composite electrode disclosed in this embodiment serves as cathode 2. Through the complementary advantages of the materials, it achieves a comprehensive improvement in conductivity, thermal stability, cost-effectiveness, and durability. This design is not only suitable for high-performance electronic devices but also maintains stability in harsh environments while significantly reducing production costs.

[0087] As a further embodiment of this example, the hole transport layer 4 is a PEDOT:PSS aqueous solution, used to transport holes and thereby optimize device performance.

[0088] The hole transport layer 4 is a key functional layer located between the anode 1 and the active layer 6, used to transport holes and optimize the performance of the organic photodetector. Specifically, the hole transport layer 4 can efficiently extract holes and block electrons, optimizing carrier utilization; passivate defects, protect electrodes, and improve device stability; and regulate the light field distribution to enhance light absorption efficiency.

[0089] The basic structure of an organic photodetector (OPD) is to sequentially fabricate the anode 1, hole transport layer 4, active layer 6, electron transport layer 5, and cathode 2 on a transparent glass substrate 3.

[0090] The active layer 6 is an organic photosensitive material and charge transport material, with two structures: a planar heterojunction structure (PHJ) and a bulk heterojunction structure (BHJ). The BHJ structure involves blending the donor and acceptor materials in a certain proportion, which greatly increases the interfacial area between the donor and acceptor, making it easier for photogenerated excitons to diffuse to the donor-acceptor interface for dissociation and improving dissociation efficiency.

[0091] In this application, the prepared graphene-organic dye (pigment) high photosensitive material (including graphene and three types of organic pigments: azo, perylene, and phthalocyanine) is applied to the active layer 6 to improve the photogenerated carrier generation efficiency, carrier separation efficiency, and carrier migration rate of these photosensitive organic pigments, thereby enhancing their photoelectric properties, meeting the development needs of high-tech materials, and further expanding their application fields.

[0092] By adopting the above technical solution, this application has the following beneficial effects:

[0093] (1) By synergistically designing graphene mesh thin-layer structures with various photosensitive pigments, the efficiency of photogenerated carrier generation, separation, and migration was significantly improved. Azo-graphene, perylene-graphene, and phthalocyanine-graphene systems exhibited efficient photoelectric responses in the ultraviolet, infrared, and visible light regions, respectively. After recombination, the photogenerated current density and photoelectric conversion efficiency were increased by 40% and 0.7% (compared to pure phthalocyanine devices), respectively, providing a wider spectral response range and higher sensitivity for photoelectric detection.

[0094] (2) The photoresponsivity of the PNID-modified ZnO multilayer structure is improved by 171% (compared to the unmodified structure) through energy level modulation and defect passivation. Its stepped electron transport channel design effectively reduces the accumulation of electrons at the interface, breaks through the electron transport bottleneck of the traditional single-layer ZnO structure, and significantly improves the carrier extraction efficiency.

[0095] (3) The anode uses a zinc electrode to achieve efficient hole transport, and the cathode innovatively adopts a gold-silver-aluminum composite structure. Through the complementary properties of materials, the conductivity, thermal stability, cost-effectiveness and durability are comprehensively improved. This composite structure not only has the characteristics of low emissivity and high oxidation resistance, but also reduces the deformation caused by thermal stress through matching thermal expansion coefficients, thus extending the service life of the equipment.

[0096] (4) The three-dimensional interpenetrating network structure of the graphene mesh thin layer and the pigment layer makes the physical properties of the pigment layer stable and effectively avoids the problem of pigment layer peeling off in the traditional coating process. This micro-thin layer design achieves uniform and stable distribution of photosensitive materials on a macroscopic level, which provides a guarantee for the long-term reliability of the device.

[0097] (5) By using a composite design of aluminum substrate and gold and silver plating on the surface, the amount of precious metals used is significantly reduced while ensuring key performance. This material selection strategy enables the composite electrode to have both high conductivity and oxidation resistance, as well as good processing performance and cost-effectiveness, making it particularly suitable for large-scale production needs.

[0098] (6) PEDOT: The synergistic effect of the hole transport layer, active layer, and electron transport layer of PSS optimizes carrier utilization and device stability. This structure, by regulating the light field distribution and enhancing light absorption efficiency, enables the photodetector to maintain high sensitivity while possessing stronger environmental adaptability and longer service life.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An organic photodetector, characterized in that, include: Transparent glass substrate, anode, and cathode; The end of the anode furthest from the cathode is disposed on the transparent glass substrate; A hole transport layer is provided at the end of the anode away from the transparent glass substrate; An electron transport layer is provided at the end of the cathode near the anode; An active layer is disposed between the hole transport layer and the electron transport layer; The active layer is a graphene layer coated with any one of azo, perylene, or phthalocyanine photosensitive pigments. Alternatively, the active layer may consist of at least two aggregate layers, each aggregate layer comprising a graphene-azo sublayer, a graphene-perylene sublayer, and a graphene-phthalocyanine sublayer arranged sequentially in the longitudinal direction; The graphene-azo sublayer includes a thin graphene grid layer and an azo photosensitive pigment layer disposed thereon; The graphene-perylene sublayer includes a graphene mesh thin layer and a perylene-based high-photosensitive pigment layer disposed thereon; The graphene-phthalocyanine sublayer comprises a graphene mesh thin layer and a phthalocyanine photosensitive pigment layer disposed thereon.

2. The organic photodetector according to claim 1, characterized in that, The graphene mesh thin layer includes a bottom wall, side walls, horizontal mesh pillars, and vertical mesh pillars; The sidewall is located at the edge of the bottom wall; The vertical grid column array is arranged on the bottom wall; A horizontal grid post is provided at the end of the vertical grid post that is away from the bottom wall; The horizontal grid pillars are rectangular grid structures, and the nodes of the grid are connected to the vertical grid pillars.

3. The organic photodetector according to claim 2, characterized in that, The azo photosensitive pigment, the perylene photosensitive pigment, and the phthalocyanine photosensitive pigment coated on the graphene mesh thin layer form a connected pigment layer within the mesh of the graphene mesh thin layer.

4. The organic photodetector according to claim 1, characterized in that, The electron transport layer comprises an upper ZnO sublayer and at least one lower ZnO sublayer; The upper and lower end faces of the ZnO sublayer are coated with a PNID modification layer. The lower end face of the ZnO sublayer is coated with a PNID modification layer.

5. The organic photodetector according to claim 1, characterized in that, The transparent glass substrate is made of indium tin oxide conductive glass and is used to provide physical support, optical transmission and electrical insulation for other structures.

6. The organic photodetector according to claim 1, characterized in that, The anode is a zinc electrode.

7. The organic photodetector according to claim 1, characterized in that, The cathode is a gold-silver-aluminum composite electrode.

8. The organic photodetector according to claim 7, characterized in that, The gold-silver-aluminum composite electrode includes a gold layer, a silver layer, and an aluminum layer; The aluminum layer is disposed in the innermost layer as an inner layer substrate; The gold layer is placed on the outermost side to protect the inner silver and aluminum layers from oxidation; The silver layer is disposed between the gold layer and the aluminum layer to improve the electron transfer efficiency between the aluminum layer and the gold layer.

9. The organic photodetector according to claim 1, characterized in that, The hole transport layer is a PEDOT:PSS aqueous solution, used to transport holes and thus optimize device performance.

10. An apparatus comprising the organic photodetector according to any one of claims 1-9.

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