High color rendering full spectrum plasmonic luminescent material

Abstract

This invention discloses a high color rendering, full-spectrum plasma luminescent material, relating to the field of plasma luminescence technology. It aims to address the shortcomings of existing plasma luminescent materials, such as insufficient color rendering, presence of toxic and harmful substances, poor stability, short lifespan, and inability to form a continuous spectrum. The luminescent material is prepared from the following components by weight: 50-80 parts sulfur (S), 20-50 parts selenium (Se), 1-5 parts a triiodine compound of rare earth elements, 0.1-1 parts an alkali metal bromine compound, and 0.5-3 parts an alkali metal iodine compound. Optionally, europium iodide (EuI2), indium iodide (InI), and excess pure iodine (I2) are added. It is encapsulated in a mixed buffer gas of argon (Ar) and krypton (Kr), with the inner wall of the quartz bubble shell coated with an Al2O3 protective film. The raw materials of this invention are non-toxic and environmentally friendly, complying with RoHS and other environmental regulations. It can form a continuous spectrum close to sunlight, and exhibits long lifespan and strong stability.

Description

Technical Field

[0001] This invention relates to the field of plasma luminescence technology, specifically to a high color rendering, full-spectrum plasma luminescent material. Background Technology

[0002] Plasma luminescence technology is widely used in various lighting scenarios. Among them, sulfur-based plasma light sources have attracted attention due to their spectral characteristics, but existing technologies have many shortcomings. Early microwave sulfur lamps used pure sulfur or a combination of sulfur and selenium as the luminescent medium, resulting in a low color rendering index (Ra≈80), with a special color rendering index (R9<50) and insufficient red light performance. Some related technologies use toxic rare earth formulations containing thallium (Tl), with formulation components of S / Se / Ar or containing TlI, NaI, etc., which are filled into quartz bulbs for use.

[0003] The shortcomings of existing technologies are specifically manifested in the following ways: thallium-containing formulations are toxic and do not comply with RoHS environmental standards; the iodides in the formulation have poor thermal and chemical stability and are prone to decomposition, leading to severe light decay and bulb blackening, which in turn results in a large tolerance for color rendering index (CRI, R9); although metal halide lamps have improved color rendering index, with CRI≈85, their lifespan is only 500 hours, requiring frequent replacement; although LED light sources have CRI>95, the point light source spectrum has a gap between green and blue, and cannot form a continuous spectrum close to sunlight, which has obvious limitations in professional lighting scenarios. Summary of the Invention

[0004] To address the shortcomings of existing plasma luminescent materials, such as insufficient color rendering, presence of toxic and harmful substances, poor stability, short lifespan, and inability to form a continuous spectrum close to sunlight, this paper proposes a high color rendering full-spectrum plasma luminescent material prepared from non-toxic raw materials, with a reasonable formulation, excellent color rendering, strong stability, and long service life. This material overcomes the application limitations of existing technologies in professional lighting and various lighting scenarios, and meets the requirements for environmental protection and high optical performance.

[0005] To solve the above-mentioned technical problems, the present invention achieves this through the following solution: A high color rendering full-spectrum plasmon luminescent material of the present invention is prepared from the following materials in parts by mass. Sulfur (S), 50-80 parts; Selenium (Se), 20-50 parts; Triiodine compounds of rare earth elements, 1-5 parts; Alkali metal bromine compounds, 0.1 to 1 part; Alkali metal iodine compounds, 0.5 to 3 parts.

[0006] Furthermore, the triiodine compound includes one or more of dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3).

[0007] Furthermore, when the triiodine compound of the rare earth element includes dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3), the molar ratio of dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3) is in the range of 4~6:2~4:0.5~2; When the rare earth triiodine compound includes dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3), the amount of dysprosium iodide (DyI3) added is 3% to 15% of the total mass of the luminescent material.

[0008] Furthermore, the alkali metal bromine compound includes cesium bromide (CsBr); The amount of cesium bromide (CsBr) added is 3%-30% of the total mass of the luminescent material.

[0009] Furthermore, when the triiodine compound is dysprosium iodide (DyI3), the mass ratio of dysprosium iodide (DyI3) to cesium bromide (CsBr) is 5~10:1.

[0010] Furthermore, the alkali metal iodine compound includes one or more of sodium iodide (NaI) and cesium iodide (CsI).

[0011] Furthermore, the molar ratio of sulfur (S) to selenium (Se) is 60:40 to 80:20, and the sulfur (S) and selenium (Se) are nanoparticles with a particle size of 10~300 nm.

[0012] Furthermore, the luminescent material also includes a mixed buffer gas, which is a mixture of argon (Ar) and krypton (Kr), wherein the volume percentage of krypton (Kr) is 1% to 10%.

[0013] Furthermore, the luminescent material also includes one of europium iodide (EuI2) and indium iodide (InI); When the luminescent material is indium iodide (InI), the amount of indium iodide (InI) added is 10% to 60% of the total mass of the luminescent material.

[0014] Furthermore, the luminescent material also contains an excess of pure iodine I2, wherein the amount of pure iodine I2 added is 0.5% to 3% of the total mass of the luminescent material.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses sulfur (S), selenium (Se), triiodides of rare earth elements, alkali metal iodides, and alkali metal bromides as core raw materials, without adding toxic substances such as thallium and cadmium. The raw materials are non-toxic and environmentally friendly, and comply with global environmental regulations such as RoHS and REACH.

[0016] 2. Each core raw material is combined in a specific mass ratio, with the molar ratio of sulfur to selenium controlled between 60:40 and 80:20 and existing in the form of nanoparticles. The amounts of rare earth triiodides, alkali metal iodides, and alkali metal bromides are precisely limited, and combined with excess pure iodine I2, to achieve high color development performance.

[0017] 3. The inner wall of the quartz bulb is coated with an Al2O3 protective film. Combined with the encapsulation process such as vacuum degree and preheating degassing, and the synergistic effect of the components in the formula, it can effectively reduce the side reaction between the luminescent material and the bulb, inhibit bulb blackening, reduce light decay, and extend the service life of the luminescent material.

[0018] 4. The formula is filled in a mixed buffer gas of Ar and Kr. The components work together to form a continuous spectrum close to sunlight with no obvious spectral loss, making it suitable for a variety of scenarios.

[0019] 5. The formula is reasonable, the preparation process is simple, the raw materials are easy to obtain, the packaging process can be implemented on a large scale, which facilitates mass production and reduces production costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the mass percentage of each substance in the luminescent material of this invention.

[0021] The attached diagram is labeled as follows: Sulfur 1, Selenium 2, Triiodine compound 3, Alkali metal bromine compound 4, Alkali metal iodine compound 5. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Obviously, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example 1:

[0024] Please refer to the appendix. Figure 1 , Figure 1 This is a schematic diagram showing the mass percentage of each substance in the luminescent material of the present invention. The largest mass percentage is sulfur element 1, followed by selenium element 2, and the third largest mass percentage is triiodine compound 3. Alkali metal bromine compound 4 and alkali metal iodine compound 5 are formulated according to requirements.

[0025] The present invention discloses a high color rendering full-spectrum plasmon luminescent material, which is prepared from the following materials in parts by mass. Sulfur (S), 50-80 parts; Selenium (Se), 20-50 parts; Triiodine compounds of rare earth elements, 1-5 parts; Alkali metal bromine compounds, 0.1 to 1 part; Alkali metal iodine compounds, 0.5 to 3 parts.

[0026] The triiodine compounds include one or more of dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3).

[0027] When the triiodine compound of the rare earth element includes dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3), the molar ratio of dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3) is in the range of 4~6:2~4:0.5~2; When the rare earth triiodine compound includes dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3), the amount of dysprosium iodide (DyI3) added is 3% to 15% of the total mass of the luminescent material.

[0028] The alkali metal bromine compound includes cesium bromide (CsBr); the amount of cesium bromide (CsBr) added is 3%-30% of the total mass of the luminescent material.

[0029] When the triiodine compound is dysprosium iodide (DyI3), the mass ratio of dysprosium iodide (DyI3) to cesium bromide (CsBr) is 5~10:1.

[0030] The alkali metal iodine compound includes one or more of sodium iodide (NaI) and cesium iodide (CsI).

[0031] The molar ratio of sulfur (S) to selenium (Se) is 60:40 to 80:20, and the sulfur (S) and selenium (Se) are nanoparticles with a particle size of 10~300 nm.

[0032] The luminescent material also includes a mixed buffer gas, which is a mixture of argon (Ar) and krypton (Kr), wherein the volume percentage of krypton (Kr) is 1% to 10%.

[0033] The luminescent material also includes one of europium iodide (EuI2) and indium iodide (InI); when the luminescent material is indium iodide (InI), the amount of indium iodide (InI) added is 10% to 60% of the total mass of the luminescent material.

[0034] The luminescent material also contains an excess of pure iodine I2, wherein the amount of pure iodine I2 added is 0.5% to 3% of the total mass of the luminescent material. Example 2:

[0035] The core technical principle of this invention is that the luminescent material achieves continuous spectral emission close to sunlight through hierarchical synergistic decomposition, catalytic cycling, and dynamic equilibrium of its components. The specific decomposition mechanism is as follows: I. Hierarchical and Synergistic Decomposition of Core Luminescent Material: (1) Decomposition of the sulfur-selenium system: (S-Se) n+m +e - →nS + +mSe + Sulfur and selenium exist in the form of nanoparticles, with their molar ratio controlled between 60:40 and 80:20, providing a basis for spectral continuity. (2) Decomposition of rare earth triiodide compounds: DyI3 → DyI2 + +I - →Dy 3+ +3I - DyI3 is responsible for enhancing the yellow spectrum, HoI3 is responsible for enhancing the green spectrum, and CeI3 is responsible for enhancing the blue and ultraviolet spectra. The three work together to fill the gap in the continuous spectrum of sulfur and selenium and improve color rendering. (3) Decomposition of luminescent material: InI + Ar + →In + +I - +Ar,InI acts as a blue spectrum enhancer, further improving spectral continuity;EuI2→Eu 2+ +2I - Eu 2+ It emits 611nm red light, enhancing the deep red spectral performance.

[0036] II. Catalytic decomposition by activator: Alkali metal bromine compounds (preferably CsBr) are used as excitation promoters, and their thermal decomposition and catalytic processes are as follows: CsBr → Cs + Br2 (thermal decomposition temperature > 300℃); Cs + e - →Cs + +2e - This lowers the ionization energy of the system and promotes the excitation and luminescence of other components; Cs + +SBr+I - →CsBr+S + +I enables the recycling of CsBr, thereby improving the stability of the system.

[0037] III. Penning Effect-Assisted Decomposition of Buffer Gases: A mixed buffer gas (Ar and Kr mixture) undergoes Penning effect-assisted excitation: Ar + e - →Ar + (Metastable state); Ar + +DyI3→Ar+DyI2 + +I - ;Kr+ +InI→Kr+In + +I - The volume ratio of Kr is controlled at 1%~10%, which can effectively improve excitation efficiency and optimize light effect.

[0038] IV. Halogen-compensated dynamic equilibrium decomposition: By adding an excess of 0.5%~3% pure iodine (I2), the thermal decomposition of rare earth iodides is suppressed using the principle of chemical equilibrium. The dynamic equilibrium process is: DyI3 ⇌ Dy 3+ +3I - ;I2⇌2I - ;6I - +Al₂O₃→3I₂+2AlO₂ - This ensures a stable concentration of iodine ions in the system and reduces light decay.

[0039] V. Protective Layer Regulation and Inhibition of Decomposition: An Al2O3 protective film is prepared on the inner wall of the quartz bulb using the sol-gel method and heat treatment. This film effectively blocks direct contact between luminescent substances (especially active indium and dysprosium ions) and the quartz bulb (SiO2). The regulation process is as follows: Dy 3+ +Al₂O₃→Al₂O₃・Dy 3+ (Adsorbed state); It slows down chemical reactions, delays the blackening of the blister shell, and extends its service life. Example 3:

[0040] The present invention will be further described in detail below with reference to specific embodiments. Each embodiment follows the scope defined by the claims of the present invention, and differs only slightly in terms of component ratios and auxiliary additives, and can achieve the technical effects of the present invention.

[0041] Basic preferred embodiment: 1. Material ratio (by mass): 70 parts sulfur (S), 30 parts selenium (Se), 33 parts dysprosium iodide (DyI), 0.5 parts cesium bromide (CsBr), 1.5 parts cesium iodide (CsI); additional 1.5 parts pure iodine (I2) (accounting for 1.8% of the total mass).

[0042] 2. Raw material pretreatment: Sulfur (S) and selenium (Se) are processed into nanoparticles with a particle size controlled at 80±5nm and a molar ratio of 7:3 (in the range of 60:40 to 80:20); all solid raw materials are dried in an argon glove box to remove moisture and impurities.

[0043] 3. Packaging process: The above solid mixture is filled into a quartz bubble with an inner diameter of 5.5 mm (the inner wall is pre-coated with an Al2O3 protective film by sol-gel method + heat treatment), and vacuumed to a vacuum degree ≤10. -4After preheating and degassing, a mixed buffer gas of Ar + 3% Kr at 350 Torr is introduced, followed by sealing.

[0044] 4. Performance Testing: Under 140W power input, the luminous material has a luminous flux of over 12000lm, a luminous efficacy of >85lm / W, a correlated color temperature of 4500K, a color rendering index Ra=96, a special color rendering index R9=94, a GSM58B color difference ΔE=1.2, a light decay of 2.8% after 1000 hours, no blackening of the bubble shell, and complies with RoHS environmental standards.

[0045] Examples containing multiple rare earth triiodine compounds: 1. Material ratio (by mass): 60 parts sulfur (S), 40 parts selenium (Se), 4 parts rare earth triiodide compound (dysprosium iodide (DyI3): holmium iodide (HoI3): cerium iodide (CeI3) = 5:3:1, molar ratio), 0.8 parts cesium bromide (CsBr), 2 parts sodium iodide (NaI); additionally add 2 parts pure iodine (I2) (accounting for 2.2% of the total mass) and 30 parts indium iodide (InI) (accounting for 30% of the total mass).

[0046] 2. Raw material pretreatment: Sulfur (S) and selenium (Se) are nanoparticles with a particle size of 150 nm and a molar ratio of 6:4; the amount of dysprosium iodide (DyI3) added is 8% of the total mass, which is within the range of 3% to 15%.

[0047] 3. Packaging process: Same as in Example 1, with the mixed buffer gas being Ar + 5% Kr, and a vacuum degree ≤10. -4 Pa, preheated and degassed before being melted and sealed.

[0048] 4. Performance testing: Correlated color temperature 3500K, color rendering index Ra=95, special color rendering index R9=92, luminous efficacy >82lm / W, light decay of 2.9% after 1000 hours, excellent spectral continuity, significantly improved blue spectrum intensity, suitable for indoor photography lighting scenarios.

[0049] High color temperature example: 1. Material ratio (by mass): 80 parts sulfur (S), 20 parts selenium (Se), 35 parts dysprosium iodide (DyI), 1 part cesium bromide (CsBr), 3 parts cesium iodide (CsI); additionally add 3 parts pure iodine (I2) (3% of the total mass) and 60 parts indium iodide (InI) (60% of the total mass).

[0050] 2. Raw material pretreatment: Sulfur (S) and selenium (Se) are nanoparticles with a particle size of 10 nm and a molar ratio of 8:2; the mass ratio of dysprosium iodide (DyI3) to cesium bromide (CsBr) is 5:1, which is within the range of 5~10:1.

[0051] 3. Packaging process: Same as in Example 1, with the mixed buffer gas being Ar + 10% Kr, and a vacuum degree ≤ 10. -4 Pa, preheated and degassed before being melted and sealed.

[0052] 4. Performance testing: Correlated color temperature 6500K, color rendering index Ra=94, special color rendering index R9=91, luminous efficacy >80lm / W, light decay of 3.0% after 1000 hours, spectrum close to sunlight, no blue light peak, suitable for stage lighting and lithography machine lighting scenarios.

[0053] Low color temperature example: 1. Material ratio (by mass): 50 parts sulfur (S), 50 parts selenium (Se), 1 part dysprosium iodide (DyI3), 0.1 parts cesium bromide (CsBr), 0.5 parts sodium iodide (NaI); additionally add 0.5 parts pure iodine (I2) (0.5% of the total mass) and 5 parts europium iodide (EuI2).

[0054] 2. Raw material pretreatment: Sulfur (S) and selenium (Se) are nanoparticles with a particle size of 300 nm and a molar ratio of 6:4; the amount of cesium bromide (CsBr) added is 3% of the total mass, which is within the range of 3%-30%.

[0055] 3. Packaging process: Same as in Example 1, with the mixed buffer gas being Ar + 1% Kr, and a vacuum degree ≤ 10. -4 Pa, preheated and degassed before being melted and sealed.

[0056] 4. Performance test: Correlated color temperature 3000K, color rendering index Ra=95, special color rendering index R9=93, luminous efficacy >83lm / W, light decay of 2.7% after 1000 hours, excellent red light performance, suitable for vehicle lights and indoor warm light lighting scenarios.

[0057] Comparative Test: The luminescent material of the preferred embodiment of the present invention was compared with the performance of sulfur-based luminescent materials, metal halide lamps, and LED light sources in the prior art. The testing standards followed CIE13.3-1995, ANSI / IESTM-30-20, ISO11664-4, and IESLM-80-15. The specific comparison results are shown in the table below: Example 4:

[0058] The core innovation of this invention lies in the synergistic effect of the five-element formulation system, the Al2O3 protective film, halogen compensation technology, and the packaging process. Its alternative solutions are mainly reflected in the following aspects, all of which fall within the scope of protection of this invention: 1. Replacement of luminescent medium: Se vapor + ZnSe nanoparticles, Te vapor + ZnTe nanoparticles, and S vapor + CdSe quantum dots can be used to replace the basic sulfur selenium nanoparticles, all of which can achieve similar spectral continuity effects; 2. Buffer gas substitution: Ne+5%Xe and He+2%Ar+1%Kr mixed gas can be used to replace Ar+1%~10%Kr, and the Penning effect assisted excitation effect is basically the same; 3. Exciter substitution: RbCl (0.08wt%) and KF (0.15wt%) can be used to replace CsBr as exciters, both of which can achieve the effect of reducing ionization energy and promoting excitation luminescence; 4. Stabilizer replacement: Hg vapor (0.01 kPa) and Sn particles (10) can be added. 10 / cm 3 As a stabilizer, it further enhances the stability of the system and reduces light decay.

[0059] Se vapor partial pressure 0.8±0.05 kPa; ZnSe nanoparticles (particle size 80±5 nm, concentration 1.0-1.5×10⁻⁶) 12 / cm 3 ), particle size 10-300nm; -CsBr thermal decomposition produces Cs atoms (2CsBr→2Cs+Br2 (thermal decomposition>300℃)), (Cs+e - →Cs + +2e - (Reduce ionization energy), (CsBr or other alkali metal halide content 0.01-0.20wt%); Kr ratio 1-10%.

[0060] 1. Preparation method of Al2O3 protective film for inner wall of glass bulb (sol-gel method + heat treatment); Sol-gel method for depositing aluminum oxide film, using a combination of sol-gel method and dip coating / spin coating method, can prepare transparent and dense aluminum oxide (Al2O3) film on glass substrate. This film can effectively block the direct contact between luminescent materials (especially active indium and dysprosium ions) and quartz bulb (SiO2), slow down chemical reaction, and thus significantly delay the "blackening" process of the bulb and improve its lifespan; 2. Inflation process parameters (vacuum degree ≤ 10) -4 Pa, preheating and degassing); ensure the purity of the filling material (≥99.99%) and the vacuum degree (≤10). -4 Pa) and the preheating and degassing process of the bubble shell during sealing are used to eliminate the promotion of side reactions by catalysts such as water and oxygen.

[0061] 3. An excess of 0.5%-3% pure iodine (I2) increases the partial pressure of halogens, thereby inhibiting the thermal decomposition of rare earth iodides through the principle of chemical equilibrium. This is crucial in ensuring the long-term stability of luminescent materials in this field.

[0062] 4. Proportion adjustment formulas applicable to different color temperatures (3000K-6500K). InI ratio 10%-60%; CsBr ratio 3-30%; S / Se ratio 25%-50%; DyI3 ratio 3%-15%; color temperature varies from 1500K-10000K, spectral characteristics range from neutral white to cool white, and ultra-cool white; 5. Example: A preferred embodiment of the formulation is as follows: Sulfur (S): 2.5 mg; Selenium (Se): 1.2 mg (S:Se molar ratio ≈ 7:3), Dysprosium iodide (DyI3): 0.15 mg, Indium iodide (InI): 0.05 mg; Cesium bromide (CsBr): 0.02 mg.

[0063] The above solid mixture was filled into a quartz bubble shell with an inner diameter of 5.5 mm in an argon glove box. The box was then evacuated and filled with a 350 Torr Ar + 3% Kr mixed gas, followed by sealing. Test results showed that the light source, with a 140W electrical input, had a luminous flux exceeding 12000 lm, a luminous efficacy >85 lm / W, a correlated color temperature of 4500K, CRI=96, and R9=94.

[0064] In summary, this invention aims to provide an environmentally friendly, high-efficiency, and high-color-rendering plasma-emitting formula that can generate a continuous spectrum with a high color rendering index, wide color gamut coverage, and ideal color temperature. This invention belongs to the technical field of professional stage, projection, vehicle lighting, lithography machine, photographic lighting, and related indoor and outdoor lighting technologies, specifically relating to a gas-filling formula for LEP light sources, solving the problem of color distortion in clothing caused by insufficient color rendering of traditional sulfur-based LEP.

[0065] Sulfur-based LEP lamps have shortcomings in color rendering. While sulfur lamps have good spectra, their color rendering is insufficient. Early rare-earth formulations contained toxic substances such as thallium. Metal halide lamps have a CRI of approximately 85, but a lifespan of only 500 hours (frequent replacements affect performances). Although LEDs have a CRI of over 95, their point light source spectrum lacks the spectral range between green and blue, resulting in a lack of continuous exposure to sunlight.

[0066] This invention features a continuous spectrum close to sunlight, with a blue light peak without LEDs; and high color gamut coverage: 105% NTSC vs. 85% LED. The market urgently needs a green formulation that achieves top-tier optical performance while complying with modern environmental regulations (such as RoHS and REACH).

[0067] This invention uses sulfur (S), selenium (Se), triiodides of rare earth elements, alkali metal iodides, and alkali metal bromides as core raw materials. It does not contain toxic substances such as thallium and cadmium. The raw materials are non-toxic and environmentally friendly, and comply with global environmental regulations such as RoHS and REACH.

[0068] Each core raw material is combined in a specific mass ratio, with the molar ratio of sulfur to selenium controlled between 60:40 and 80:20 and existing in the form of nanoparticles. The amounts of rare earth triiodides, alkali metal iodides, and alkali metal bromides are precisely limited, and combined with excess pure iodine I2, high color development performance is achieved.

[0069] The inner wall of the quartz bulb is coated with an Al2O3 protective film. Combined with the encapsulation process of vacuum degree and preheating degassing, and the synergistic effect of the components in the formula, it can effectively reduce the side reaction between the luminescent material and the bulb, inhibit bulb blackening, reduce light decay, and extend the service life of the luminescent material.

[0070] The formula is filled in a mixed buffer gas of Ar and Kr. The components work together to form a continuous spectrum close to sunlight with no obvious spectral defects, making it suitable for a variety of scenarios.

[0071] The formula is reasonable, the preparation process is simple, the raw materials are readily available, and the packaging process can be implemented on a large scale, which facilitates mass production and reduces production costs.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A high color rendering full-spectrum plasmon luminescent material, characterized in that, Prepared from the following materials in parts by weight, Sulfur (S), 50-80 parts; Selenium (Se), 20-50 parts; Triiodine compounds of rare earth elements, 1-5 parts; Alkali metal bromine compounds, 0.1 to 1 part; Alkali metal iodine compounds, 0.5 to 3 parts.

2. The high color rendering full-spectrum plasmon luminescent material according to claim 1, characterized in that, The triiodine compounds include one or more of dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3).

3. The high color rendering full-spectrum plasmon luminescent material according to claim 2, characterized in that, When the triiodine compound of the rare earth element includes dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3), the molar ratio of dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3) is in the range of 4~6:2~4:0.5~2; When the rare earth triiodine compound includes dysprosium iodide (DyI3), holmium iodide (HoI3), and cerium iodide (CeI3), the amount of dysprosium iodide (DyI3) added is 3% to 15% of the total mass of the luminescent material.

4. The high color rendering full-spectrum plasmon luminescent material according to claim 2, characterized in that, The alkali metal bromine compound includes cesium bromide (CsBr); The amount of cesium bromide (CsBr) added is 3%-30% of the total mass of the luminescent material.

5. The high color rendering full-spectrum plasmon luminescent material according to claim 4, characterized in that, When the triiodine compound is dysprosium iodide (DyI3), the mass ratio of dysprosium iodide (DyI3) to cesium bromide (CsBr) is 5~10:

1.

6. The high color rendering full-spectrum plasmon luminescent material according to claim 1, characterized in that, The alkali metal iodine compound includes one or more of sodium iodide (NaI) and cesium iodide (CsI).

7. The high color rendering full-spectrum plasmon luminescent material according to claim 1, characterized in that, The molar ratio of sulfur (S) to selenium (Se) is 60:40 to 80:20, and the sulfur (S) and selenium (Se) are nanoparticles with a particle size of 10~300 nm.

8. The high color rendering full-spectrum plasmon luminescent material according to claim 1, characterized in that, The luminescent material also includes a mixed buffer gas, which is a mixture of argon (Ar) and krypton (Kr), wherein the volume percentage of krypton (Kr) is 1% to 10%.

9. The high color rendering full-spectrum plasmon luminescent material according to claim 1, characterized in that, The luminescent material also includes one of europium iodide (EuI2) and indium iodide (InI); When the luminescent material is indium iodide (InI), the amount of indium iodide (InI) added is 10% to 60% of the total mass of the luminescent material.

10. The high color rendering full-spectrum plasmon luminescent material according to claim 1, characterized in that, The luminescent material also contains an excess of pure iodine I2, wherein the amount of pure iodine I2 added is 0.5% to 3% of the total mass of the luminescent material.

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