WO2017039200A1 - Composite à gradient fonctionnel pour la conversion d'énergie, procédé de fabrication associé, et capteur faisant appel à celui-ci - Google Patents

Composite à gradient fonctionnel pour la conversion d'énergie, procédé de fabrication associé, et capteur faisant appel à celui-ci Download PDF

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WO2017039200A1
WO2017039200A1 PCT/KR2016/009180 KR2016009180W WO2017039200A1 WO 2017039200 A1 WO2017039200 A1 WO 2017039200A1 KR 2016009180 W KR2016009180 W KR 2016009180W WO 2017039200 A1 WO2017039200 A1 WO 2017039200A1
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layer
metal
current
powder
phosphor
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PCT/KR2016/009180
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English (en)
Korean (ko)
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권한상
박재홍
임석규
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부경대학교 산학협력단
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Priority claimed from KR1020150122003A external-priority patent/KR101782107B1/ko
Priority claimed from KR1020160096082A external-priority patent/KR101782103B1/ko
Application filed by 부경대학교 산학협력단 filed Critical 부경대학교 산학협력단
Publication of WO2017039200A1 publication Critical patent/WO2017039200A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K99/00—Subject matter not provided for in other groups of this subclass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
    • H01L31/09—Devices sensitive to infrared, visible or ultraviolet radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources

Definitions

  • the present invention relates to an energy conversion metal-phosphor oblique functional composite and a method for manufacturing the same, and more particularly, to form a bonding layer composed of a mixed powder of a metal powder and a phosphor powder between a metal layer and a phosphor layer.
  • the present invention relates to an energy conversion warp functional composite having a superior thermal stability as well as a method of manufacturing the same, which not only suppresses the delamination phenomenon but also changes it gradually.
  • the present invention relates to a sensor using a metal-ceramic gradient functional composite, and more particularly, to continuously change the content of the metal and ceramic material between the current conversion layer and the current emitting layer of the current generating unit constituting the sensor.
  • a bonding layer in which the physical properties between the metal and the ceramic are gradually changed, the interlayer peeling phenomenon is not only suppressed due to the perfect bonding between the current converting layer made of a ceramic material and the dissimilar material of the current emitting layer made of a metal material.
  • Functionally Graded Materials refers to materials whose properties change continuously from one side to the other.
  • the inclined functional material can secure various properties of the material through the gradual change of the desired physical properties, and compared with the conventional two-layered material to reduce the concentration of residual stress between the layers due to the difference in thermal expansion coefficient, Since the thermal fatigue properties and the like can be improved, it is recognized as a very promising technology in applications requiring thermal and mechanical properties.
  • Phosphor emits light in the visible region by excitation of electrons inside the phosphor by external energy such as photon, electric field, accelerated electron and pressure. It is a kind of energy conversion material that emits light.
  • the phosphor exhibits a change in light emission characteristics due to external heat, and when the phosphor is applied to a field emission display (FED), electrons are charged on the surface of the phosphor to reduce the light emission efficiency. .
  • FED field emission display
  • ELD electroluminescent display
  • a coating of a metal electrode is required on top and bottom of the phosphor layer.
  • electrode materials are essential materials for electric and electronic devices, and in general, electrode materials are coated on the surface of functional materials such as ceramics by a method such as a vapor deposition method.
  • Korean Patent Laid-Open Publication No. 2015-0143278 discloses an inclined functional metal ceramic composite material and a method of manufacturing the same.
  • the inclined functional metal ceramic composite material is composed of a single layer in which only ceramic particles are dispersed on a metal matrix. There is no description of a technique capable of fully bonding.
  • a ceramic layer is formed between the current conversion layer and the current emitting layer constituting the sensor by continuously changing the content of the metal and the ceramic material so that the physical properties between the metal and the ceramic are gradually changed. Due to the perfect bonding between the current conversion layer and the current dissipating layer dissimilar material composed of a metal material, not only the interlayer peeling phenomenon can be suppressed, but also excellent thermal and mechanical durability can be exhibited.
  • the ceramic material constituting the current conversion layer and the external energy react with each other to be converted into current, thereby generating a current, and smoothly transporting the current through the bonding layer and the current emitting layer. To circulate the current inside the sensor The.
  • an object of the present invention to provide an energy conversion gradient functional composite having a superior thermal stability as well as suppressing the delamination phenomenon and a method of manufacturing the same.
  • a phosphor layer made of phosphor powder
  • a bonding layer composed of a plurality of mixed layers made of a mixed powder of metal powder and phosphor powder is formed between the metal layer and the phosphor layer,
  • Each layer of the plurality of mixed layers is made of a mixed powder of metal powder and phosphor powder of different composition ratios
  • the mixed layer adjacent to the metal layer has a higher content of metal powder
  • the mixed layer adjacent to the phosphor layer has a higher content of phosphor powder, so that the content of the metal powder and the phosphor powder of each layer of the mixed layer is continuous. It provides the energy conversion gradient functional complex to be changed.
  • a current generator configured of a metal-ceramic gradient functional composite to generate a current by external energy
  • a current measuring unit measuring the current generated by the current generating unit
  • connection terminal formed at one side of the upper end of the current generator to allow the current generated from the current generator to circulate through the current measurer to the current generator.
  • the current generating unit is a current conversion layer made of a ceramic material; A current emitting layer made of a metal material; And a current transfer layer including a plurality of mixed layers in which a metal material and a ceramic material are mixed between the current conversion layer and the current emission layer.
  • Each layer of the plurality of mixed layers is made of a mixture of metal and ceramic materials of different composition ratios
  • the mixed layer adjacent to the current emitting layer has a higher content of the metal material than the ceramic material.
  • the mixed layer adjacent the current converting layer has a higher content of the ceramic material than the content of the metal material. It provides a sensor using a metal-ceramic gradient functional composite characterized in that the content of the metal material and the ceramic material is continuously changed.
  • the energy conversion metal-phosphor gradient functional composite according to the present invention forms a bonding layer composed of a mixed powder of a metal powder and a phosphor powder between a metal layer and a phosphor layer to gradually change the physical properties between the metal and the phosphor, thereby achieving various characteristics. Not only can it be secured, but also the thermal stress characteristic and thermal fatigue characteristic can be improved because the residual stress concentration between layers due to the difference in thermal expansion coefficient is alleviated. Moreover, interlayer peeling phenomenon is suppressed by this and it is excellent in thermal stability. Therefore, it can be effectively used for the field emission display and the electroluminescent display using the inclined functional composite.
  • the senor using the metal-ceramic gradient functional composite according to the present invention is to change the content of the metal and ceramic material continuously between the current conversion layer and the current emitting layer of the current generating unit constituting the sensor physical properties between the metal and ceramic
  • the bonding layer By forming the bonding layer to be gradually changed, the perfect bonding between the current converting layer made of ceramic material and the dissimilar material of the current emitting layer made of metal material not only suppresses the delamination phenomenon but also excellent thermal and mechanical durability. And smoothly transports current through the junction layer and the current releasing layer to circulate the current inside the sensor.
  • the sensor can be applied as a variety of sensors, such as ultraviolet sensor, temperature sensor, pressure sensor.
  • FIG. 1 is a cross-sectional view showing an energy conversion gradient functional composite according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing an energy conversion gradient functional composite according to an embodiment of the present invention.
  • FIG. 3 is a diagram showing a copper-ZnS: Cu, Cl gradient functional composite according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a phosphor layer of a copper-ZnS: Cu, Cl gradient functional composite according to an embodiment of the present invention emitting light under a 365 nm ultraviolet lamp.
  • FIG. 5 is a spectrum showing photoluminescence intensities of copper-ZnS: Cu, Cl gradient functional complexes and ZnS: Cu, Cl phosphor powders according to an embodiment of the present invention.
  • FIG. 7 is a spectrum illustrating photoluminescence intensity according to temperature change of a copper-ZnS: Cu, Cl gradient functional composite according to an embodiment of the present invention.
  • FIG. 8 is a graph showing a current-voltage curve (I-V curve) when the UV-rays of 365 nm are irradiated on the copper-ZnS: Cu, Cl gradient functional composite according to an embodiment of the present invention.
  • FIG. 9 is a cross-sectional view showing a sensor using an inclined functional composite according to an embodiment of the present invention.
  • FIG. 10 is a cross-sectional view showing a metal-ceramic gradient functional composite according to one embodiment of the present invention.
  • FIG. 11 is a diagram illustrating a metal-ceramic gradient functional composite according to an embodiment of the present invention.
  • I-V curve current-voltage curve
  • FIG. 13 is a photograph showing a metal-ceramic gradient functional composite according to an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view showing an energy conversion gradient functional composite according to an embodiment of the present invention.
  • the energy conversion metal-phosphor gradient functional composite 500 according to an embodiment of the present invention
  • a bonding layer 520 is formed between the metal layer 510 and the phosphor layer 530, which is composed of a plurality of mixed layers 525 made of a mixed powder of metal powder and phosphor powder.
  • Each layer of the plurality of mixed layers 525 is made of a mixed powder of metal powder and phosphor powder of different composition ratios
  • a layer adjacent to the metal layer 510 has a higher content of metal powder
  • a mixed layer adjacent to the phosphor layer 530 has a higher content of phosphor powder, thereby increasing the amount of phosphor powder.
  • the content of the metal powder and the phosphor powder in each layer is changed continuously.
  • the thickness of the energy conversion gradient functional composite may be adjusted according to the number of mixed layers 525 stacked.
  • the composition ratio of each layer of the plurality of mixed layers may be changed from 95: 5 to 1:99 by volume ratio of the metal powder and the phosphor powder from the metal layer to the phosphor layer.
  • the composition ratio of the metal and the phosphor powder does not satisfy the above range, the bonding between the bonding layer and the metal layer and the phosphor layer may not be performed well, and interlayer peeling may occur.
  • the content and composition ratios of the metal powder and the phosphor powder included in the plurality of mixed layers 525 are different for each layer, and the composition ratio thereof is changed according to each mixed layer 525 in the thickness direction. Because of the continuous change to mitigate the rapid change in physical properties between the metal and the phosphor is not only resistant to mechanical or thermal shock, but also thermal shock characteristics and thermal fatigue characteristics can be improved.
  • a bonding layer is formed by stacking a plurality of mixed layers consisting of a mixed powder of a metal powder and a phosphor powder between a metal layer and a phosphor layer so that the composition ratio of each layer is continuously changed in the thickness direction. 1, or the region adjacent to the metal layer in the monolayer has a high content of metal powder and the region adjacent to the phosphor layer has a high content of phosphor powder, so that the contents of the metal powder and the phosphor powder change continuously. It is possible to form a bonding layer in which the content of the powders is inclined (see FIG. 2).
  • FIG. 2 is a cross-sectional view showing an energy conversion gradient functional composite according to an embodiment of the present invention.
  • the energy conversion gradient functional composite 500 according to an embodiment of the present invention
  • a monolayer bonding layer 520 made of a mixed powder of metal powder and phosphor powder is formed,
  • the region adjacent to the metal layer 510 in the bonding layer 520 has a high content of metal powder, and the region adjacent to the phosphor layer 530 has a high content of phosphor powder, thus the metal powder of the bonding layer 520. And the content of the phosphor powder changes continuously.
  • the bonding layer 520 is continuously changed from 95 to 1% by volume with respect to the total content of the mixed powder of the metal powder and the phosphor powder as the metal layer from the metal layer to the phosphor layer,
  • the content of the phosphor powder can vary continuously from 5 to 99% by volume.
  • the content of the metal powder and the phosphor powder in the region adjacent to the metal layer and the region adjacent to the phosphor layer in the bonding layer 520 is different from each other, and the content thereof continuously changes in the thickness direction.
  • the metal powder may be any one selected from the group consisting of copper (Cu), aluminum (Al), nickel (Ni) and titanium (Ti).
  • the phosphor powder may be any one selected from the group consisting of compounds based on Group 2 to Group 6 semiconductor compounds including ZnS-based and ZnO-based.
  • the diameter of the metal powder and the phosphor powder may be 10 nm or more and 100 ⁇ m or less.
  • the diameter of the metal powder and the phosphor powder may be the same or may be different.
  • the phosphor particles may be aligned at the interface of the metal particles.
  • the metal particles may be aligned at the interface of the phosphor particles.
  • the energy conversion gradient functional composite of the present invention can be effectively used for photoelectric conversion devices, field emission displays, and electroluminescent displays using phosphors.
  • the electrons inside the phosphor are excited and excited by energy from the outside, that is, photons, electric fields, accelerated electrons, pressure, and the like. Since it has a property as an inorganic light emitting material that is transitioned to emit light, it is possible to convert high energy to low energy (Down Conversion), or to convert low energy to high energy (Up Conversion).
  • one embodiment of the present invention relates to a photoelectric conversion element in which an ultraviolet-A region (320-400 nm) light incident from one side is absorbed by the energy conversion gradient functional composite, causing a current change by the incident light. .
  • an embodiment of the present invention relates to an electroluminescent device in which a voltage applied from one side is applied to the energy conversion gradient functional composite, and the voltage is converted into light to form light.
  • One embodiment of the present invention relates to a method for producing an energy conversion gradient functional composite, the method of the present invention
  • composition ratio of the mixed powder on the metal layer is closer to the metal layer, the more the metal powder is contained, and the layer spaced apart from the metal layer increases the phosphor powder, and the composition ratio of the mixed powder is continuously changed. Stacking the mixed powders sequentially so as to form a bonding layer composed of a plurality of mixed layers;
  • the composition ratio of each layer of the plurality of mixed layers may be changed from 95: 5 to 1:99 by volume ratio of the metal powder and the phosphor powder from the metal layer to the phosphor layer.
  • the solid state sintering method may be used so that the composition ratio of each layer of the mixed layer does not change during sintering.
  • the mixed layer is a mixed layer adjacent to the metal layer has a higher content of the metal powder, and a mixed layer adjacent to the phosphor layer has a higher content of the phosphor powder, the metal of each layer of the mixed layer
  • the liquid phase sintering method can be used so that the contents of the powder and the phosphor powder change continuously.
  • One embodiment of the present invention relates to a method for producing an energy conversion gradient functional composite, the method of the present invention
  • the region adjacent to the metal layer on the metal layer has a high metal powder content, and the region spaced from the metal layer has a monolayer bonding layer made of a mixed powder of a metal powder and a phosphor powder, which is configured to have a high content of phosphor powder.
  • the bonding layer is continuously changed from 95 to 1% by volume relative to the total content of the mixed powder of the metal powder and the phosphor powder as the bonding layer from the metal layer to the phosphor layer,
  • the content can vary continuously from 5 to 99% by volume.
  • the solid state sintering method may be used so that the composition ratio of the bonding layer does not change during the sintering process.
  • the region adjacent to the metal layer has a high content of metal powder
  • the region adjacent to the phosphor layer has a high content of phosphor powder, so that the metal powder and the phosphor powder of the bonding layer have high content.
  • the liquid phase sintering method can be used to continuously change the content of.
  • the pressure is preferably 30 to 100 MPa, and the heating temperature is preferably 50 to 500 ° C. lower than the low melting temperature of the metal powder and the phosphor powder.
  • the sintering may use a discharge plasma sintering or pressure sintering apparatus, but is not limited thereto.
  • 9 is a block diagram showing a sensor using a metal-ceramic gradient functional composite according to an embodiment of the present invention. 9, the sensor 100 using a metal-ceramic gradient functional composite according to an embodiment of the present invention is
  • a current generator 200 composed of a metal-ceramic gradient functional composite to generate current by external energy 10;
  • a current measuring unit 300 measuring a current generated by the current generating unit 200.
  • connection terminal 250 is formed on one side of the upper end of the current generating unit 200 to allow the current generated from the current generating unit 200 to circulate through the current measuring unit 300 to the current generating unit 200.
  • the current generator 200 includes a current conversion layer 210 made of a ceramic material; A current emitting layer 230 made of a metal material; And a current transfer layer 220 including a plurality of mixed layers 225 mixed with a metal material and a ceramic material between the current conversion layer and the current emission layer.
  • Each layer of the plurality of mixed layers 225 is made of a mixture of metal and ceramic materials of different composition ratios
  • the mixed layer adjacent to the current emitting layer 230 has a greater content of the metal material than the ceramic material, and the more mixed layer adjacent the current converting layer 210 has a greater content of the ceramic material than the metal material.
  • the content of the metal material and the ceramic material of each layer of the mixed layer is varied continuously.
  • the external energy reaches the current converting layer, and a current is generated by the ceramic material constituting the current converting layer reacting with the external energy, and the generated current is applied to the current transfer layer. Can be transferred to the current emitting layer.
  • Ceramic materials used in the present invention are materials having a property of changing electrical conductivity or resistance by external energy, and may be applied as a sensor for detecting external energy (external environment) using such characteristics. Specifically, when the ceramic material receives external energy in a state where a voltage is applied, a large number of electrons are generated and a change in the flow of current appears, and thus it may be applied to a sensor using the same.
  • the metal material constituting the current carrying layer and the current emitting layer may be any one selected from the group consisting of copper (Cu), aluminum (Al), and titanium (Ti).
  • the ceramic material is ZnO, ZnS, ZrO 2 , CaO, Y 2 O 3 , MgO, Nd 2 O 3 , ThO 2 , NiO, Al 2 O 3 , Cr 2 O 3 , Fe 2 O 3 , MnO, CaSiO 3 , It may be one or a complex thereof selected from the group consisting of BaO, SrO, TiO 2 , BaTiO 3 , BaBiO 3 , SrAl 2 O 4 and Pb (Zr, Ti) O 3 .
  • the external energy may be heat, ultraviolet light, gas, flame or pressure.
  • the controller 400 may further include a controller 400 that determines whether or not external energy is generated using the current value measured by the current measuring unit 300.
  • control unit it is possible to determine the type or size of the external energy reaching the current conversion layer of the current generating unit by using the current value measured by the current measuring unit, through which the metal-ceramic gradient functional composite sensor Can be utilized as
  • the metal-ceramic gradient functional composite as a sensor
  • the value of the work function according to the metal in the metal-ZnO gradient functional composite constituting the current generating unit is changed (Al: 3.74 eV, Cu: 4.47 eV, Ti: 4.09 eV)
  • different kinds of metals can be used to produce sensors with different sensitivity and current voltage characteristics.
  • the maximum temperature according to the metal in the metal-ZnO gradient functional composite is Al 500 ° C, Cu 900 ° C, and Ti. Is 1000 ° C., it is possible to manufacture a sensor having a different maximum temperature value by changing the type of metal.
  • connection terminal 250 formed on one side of the upper end of the current generating unit 200 is made of a metal material, the current formed in the current conversion layer 210 constituting the current generating unit emits current The current may be transferred to the layer 230, and the current may be circulated through the current measuring unit 300 to the current generating unit 200.
  • connection terminal 250 may be provided for applying electrical potential energy (potential difference) to circulate the current generated by the current generating unit in the sensor.
  • the metal material constituting the connection terminal may be the same as or different from the metal material constituting the current transfer layer and the current releasing layer.
  • the metal material constituting the connection terminal may be any one selected from the group consisting of copper (Cu), aluminum (Al), and titanium (Ti).
  • the thickness of the metal-ceramic gradient functional composite constituting the current generator 200 may be adjusted according to the number of mixed layers 225 stacked.
  • the composition ratio of each layer of the plurality of mixed layer 225 is a volume% ratio of the metal material and the ceramic material from the current emitting layer 230 to the current conversion layer 210 is 95: 5 to 1 Can be changed to: 99.
  • the composition ratio of the metal and the ceramic material does not satisfy the above range, the interlayer peeling may occur due to poor bonding between the current transfer layer, the current emission layer, and the current conversion layer.
  • the content and composition ratio of the metal material and the ceramic material included in the plurality of mixed layers 225 are different for each layer, and the composition ratio of the metal-ceramic gradient functional composite according to each mixed layer 225 in the thickness direction. Since is continuously changed to mitigate the rapid change in physical properties between the metal and the ceramic is not only resistant to mechanical or thermal shock, but also thermal shock characteristics and thermal fatigue characteristics can be improved.
  • FIGS. 10 and 11 are cross-sectional views showing a metal-ceramic gradient functional composite constituting the current generating unit 200 according to an embodiment of the present invention.
  • the composition ratio of each layer differs from each other in the mixed material consisting of a metal and ceramic mixture between the current conversion layer 210 and the current emission layer 230.
  • a plurality of layers are formed so as to continuously change in the thickness direction to form a current transfer layer 220 (see FIG. 10), or a region adjacent to the current emission layer 230 in the single layer has a high metal content and a current conversion layer 210.
  • the area adjacent to) increases the content of the ceramic material, so that the content of the metal material and the ceramic material may be continuously changed to form a single current transfer layer so that the content of the powders is inclined (see FIG. 11).
  • a current generator 200 composed of a metal-ceramic gradient functional composite to generate a current by external energy
  • a current measuring unit 300 measuring a current generated by the current generating unit 200.
  • connection terminal 250 is formed on one side of the upper end of the current generating unit 200 to allow the current generated from the current generating unit 200 to circulate through the current measuring unit 300 to the current generating unit 200.
  • the current generator 200 includes a current conversion layer 210 made of a ceramic material; A current emitting layer 230 made of a metal material; And a single current transfer layer 220 in which a metal material and a ceramic material are mixed between the current conversion layer and the current emission layer.
  • the content of the metal material is greater than that of the ceramic material, and in the region adjacent to the current conversion layer 210, the content of the ceramic material is the content of the metal material. More, the content of the metal material and the ceramic material of the current transfer layer 220 is characterized in that it is continuously changed.
  • the current transfer layer 220 from the current emission layer 230 to the current conversion layer 210, the content of the metal material is 95 to 1 with respect to the total mixed content of the metal material and the phosphor material It can be continuously changed in volume%, the content of the ceramic material can be continuously changed in 5 to 99 volume%.
  • the content of the metal and the ceramic material does not satisfy the above range, it may be difficult to bond between the current transfer layer, the current emission layer, and the current conversion layer, thereby causing interlayer separation.
  • Each powder material forming the current converting layer, the current transfer layer, and the current releasing layer of the metal-ceramic gradient functional composite according to the present invention may be sintered using a discharge plasma sintering method to form the layer.
  • the metal material and the ceramic material may form each layer having each function in one composite by stacking and sintering each metal powder and ceramic powder.
  • the diameter of the metal powder and ceramic powder may be 10 nm or more and 100 ⁇ m or less.
  • the diameters of the metal powder and the ceramic powder may be the same or may be different.
  • the ceramic particles may be aligned at the interface of the metal particles.
  • the metal particles may be aligned at the interface of the ceramic particles.
  • Example 1-1 lamination of metal layer, bonding layer and phosphor layer
  • a metal layer and a phosphor layer were prepared using copper powder (100 ⁇ m or less in diameter) and ZnS: Cu, Cl phosphor powder (10 ⁇ m or less in diameter), respectively. Then, the copper powder and the ZnS: Cu, Cl phosphor powder were mixed in the composition of Table 1 below, hand milled for 15 minutes, and then the metal layer was placed on the 15 mm diameter graphite die in the order shown in Table 1 below. 0.2g each was sequentially laminated.
  • Composition (% by volume) Weight (g) 100% ZnS: Cu, Cl 0.2 5% Cu / 95% ZnS: Cu, Cl 0.2 10% Cu / 90% ZnS: Cu, Cl 0.2 20% Cu / 80% ZnS: Cu, Cl 0.2 30% Cu / 70% ZnS: Cu, Cl 0.2 50% Cu / 50% ZnS: Cu, Cl 0.2 70% Cu / 30% ZnS: Cu, Cl 0.2 100% Cu 0.2
  • the metal layer, the bonding layer, and the phosphor layer laminated in Example 1-1 were sintered at 900 ° C. for 5 minutes under a pressure of 50 MPa to prepare a gradient functional composite. At this time, the temperature increase rate was 100 degreeC per minute.
  • the prepared warp functional composite had a diameter of 15 mm and a thickness of 20 mm.
  • Figure 3 shows the energy conversion gradient functional composite prepared in the above embodiment.
  • FIG. 4 is a view showing the phosphor layer of the copper-ZnS: Cu, Cl gradient functional composite according to an embodiment of the present invention to emit light under a 365 nm ultraviolet lamp.
  • the ultraviolet ray 610 irradiated from the 365 nm ultraviolet ray lamp 600 reaches the phosphor layer 530 of the gradient functional complex, the phosphor layer emits light.
  • the peak of the copper-ZnS: Cu, Cl gradient functional complex did not occur in the red shift compared to the peak of the ZnS: Cu, Cl phosphor powder. This is because the heat transferred to the copper-ZnS: Cu, Cl gradient functional composite escapes through the copper (397 W / mK), which has excellent thermal conductivity, so that the formation of phonons due to residual heat in the phosphor is suppressed. I could see that.
  • the energy conversion gradient functional composite according to the present invention is excellent in thermal stability and can suppress the delamination between the metal layer and the phosphor layer.
  • the copper-ZnS: Cu, Cl gradient functional composite prepared in Example 1 shows a current-voltage curve (I-V curve) graph when the UV light of 365 nm and the non-lighting (Dark) are shown in FIG. 8.
  • the amount of current of the copper-ZnS: Cu, Cl gradient functional composite increases as the UV of 365 nm is irradiated, and it can be applied as a UV sensor.
  • Example 2-1 current Emission layer , Current Transport layer And current Conversion layer Lamination
  • a current emission layer and a current conversion layer were prepared, respectively. Then, the copper powder and the ZnS powder were mixed in the composition of Table 3 below, and after hand milling for 15 minutes, each 0.2 g of the 15 mm diameter graphite die was placed in the order shown in Table 3 below with the current emitting layer as the lowest layer. Laminated sequentially.
  • Composition (% by volume) Weight (g) 100% ZnS 0.2 5% Cu / 95% ZnS 0.2 10% Cu / 90% ZnS 0.2 20% Cu / 80% ZnS 0.2 30% Cu / 70% ZnS 0.2 50% Cu / 50% ZnS 0.2 70% Cu / 30% ZnS 0.2 100% Cu 0.2
  • the current discharge layer, the current transfer layer, and the current conversion layer stacked in Example 2-1 were sintered at 900 ° C. for 5 minutes at a pressure of 50 MPa using a spark plasma sintering method to prepare a gradient functional composite. At this time, the temperature increase rate was 100 degreeC per minute.
  • the prepared warp functional composite had a diameter of 15 mm and a thickness of 20 mm.
  • I-V curve a current-voltage curve
  • the current amount of the copper-ZnS gradient functional composite increases as UV is applied to the current conversion layer at 365 nm, thereby confirming that it can be applied as a UV sensor.
  • the current generating unit in the control unit through the current value measured by the current measuring unit 20 kW Since it can be determined that ultraviolet rays of 365 nm are irradiated, the application as a sensor is possible.
  • the metal-phosphor oblique functional composite according to the present invention can be effectively used for field emission displays and electroluminescent displays.
  • the metal-ceramic gradient functional composite according to the present invention can be applied as various sensors such as an ultraviolet sensor, a temperature sensor, and a pressure sensor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inorganic Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un composite à gradient fonctionnel métal-phosphore ou métal-céramique pour la conversion d'énergie, un procédé de fabrication associé, et un capteur faisant appel à celui-ci et, plus particulièrement, un composite à gradient fonctionnel, un procédé de fabrication associé, et un élément ou un capteur faisant appel à celui-ci, le composite à gradient fonctionnel formant une couche de liaison dans laquelle la teneur de chaque matériau change en continu de telle sorte que les propriétés physiques varient progressivement entre le métal et le phosphore ou entre le métal et la céramique. Par conséquent, la présente invention permet de supprimer le décollement entre le métal et la céramique, et a une excellente durabilité thermique et mécanique.
PCT/KR2016/009180 2015-08-28 2016-08-19 Composite à gradient fonctionnel pour la conversion d'énergie, procédé de fabrication associé, et capteur faisant appel à celui-ci WO2017039200A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0122003 2015-08-28
KR1020150122003A KR101782107B1 (ko) 2015-08-28 2015-08-28 에너지변환 경사기능복합체 및 그의 제조방법
KR10-2016-0096082 2016-07-28
KR1020160096082A KR101782103B1 (ko) 2016-07-28 2016-07-28 금속-세라믹 경사기능복합체를 이용한 센서

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WO2017039200A1 true WO2017039200A1 (fr) 2017-03-09

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111063810A (zh) * 2018-10-16 2020-04-24 深圳光峰科技股份有限公司 发光装置及其制备方法
CN111063810B (zh) * 2018-10-16 2021-11-12 深圳光峰科技股份有限公司 发光装置及其制备方法

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