CN107987829A - One plant growth Mn4+Garnet fluorescent powder, its preparation method and the LED plant growth lamp of doping - Google Patents
One plant growth Mn4+Garnet fluorescent powder, its preparation method and the LED plant growth lamp of doping Download PDFInfo
- Publication number
- CN107987829A CN107987829A CN201711126245.9A CN201711126245A CN107987829A CN 107987829 A CN107987829 A CN 107987829A CN 201711126245 A CN201711126245 A CN 201711126245A CN 107987829 A CN107987829 A CN 107987829A
- Authority
- CN
- China
- Prior art keywords
- plant growth
- fluorescent powder
- doping
- garnet fluorescent
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
- C09K11/671—Chalcogenides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Botany (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Luminescent Compositions (AREA)
Abstract
The present invention discloses a plant growth Mn4+The garnet fluorescent powder of doping, its chemical general formula are (Li1‑yMy)2(Ti1‑zLnz)O3：xMn4+, wherein M is one or more elements in alkaline-earth metal Na, K, Ru, Cs；Ln is one or more elements in Si, Ge, Sn, Zr, 0 ＜ x≤0.05,0 ＜ y≤1,0 ＜ z≤0.3.The present invention also provides a plant growth Mn4+The preparation method of the garnet fluorescent powder of doping.The present invention also provides a kind of LED plant growth lamp.Plant growth Mn4+The garnet fluorescent powder of doping makes up missing of the existing LED plant growth lamp in dark red and far-red light spectral limit, plays shortening plant growing cycle, promotes the effect of plant health fast-growth.
Description
Technical field
The present invention relates to fluorescent powder field, and in particular to a plant growth Mn4+The garnet fluorescent powder of doping, its system
Preparation Method and LED plant growth lamp.
Background technology
Root is it was found that when illumination daily amount is less than 100W/m on bed surface in greenhouse2When, or sunshine time was less than 4.5h/ days
When, it should just carry out artificially feed.The light compensation point that general leaf vegetables is used as is about 2000lx, and fruit vegetables crop also wants higher
A bit.And the southern area winter, spring unbroken rainy days in, the indoor luminous intensity of temperature only has 2000lx or so, causes as growth
It is suppressed.Especially in vegetables commercialization nursery, illumination deficiency influences whether the robust growth of seedling, so as to influence commercial seedling
Quality and economic value, it is therefore necessary to carry out artificially feed.At present, plant light compensation is mainly using containing infrared and remote red
The fluorescent lamp of external spectrum, but this mode quantity of heat production is big, and the efficiency of light energy utilization is low, directly affects the raising of economic benefit.With temperature
The development of room industry and the raising of production level, the research for carrying out the reasonable light filling in greenhouse and reduction light filling cost have seemed more next
It is more important.
Understand that high green plants is selective to the demand of light by literature survey.Irradiated with the light source rich in feux rouges
Under, the development of plant is significantly accelerated, causes plant compared with prematurity, solid.It can promote the accumulation of dry matter in plant at the same time, promote
Make the formation of bulb, root tuber, leaf-head and other plant organ.Under blue light action, promote seedling stem thickening, adjust stomata and open
Put, promote cell leakage and cytoplasm circulation.
The content of the invention
First purpose of the present invention is to provide a plant growth Mn4+The garnet fluorescent powder of doping, makes up existing
Missing of the LED plant growth lamp in dark red and far-red light spectral limit, plays shortening plant growing cycle, promotes plant health fast
The effect of fast-growing length.
To achieve the above object, the present invention adopts the following technical scheme that：
One plant growth Mn4+The garnet fluorescent powder of doping, its chemical general formula are (Li1-yMy)2(Ti1-zLnz)O3：
xMn4+, wherein M is one or more elements in alkaline-earth metal Na, K, Ru, Cs；Ln is one kind or more in Si, Ge, Sn, Zr
Kind of element, 0 ＜ x≤0.05,0 ＜ y≤1,0 ＜ z≤0.3.
Preferably, the garnet fluorescent powder can be excited by the light in 300 nanometer of -550 nanometer wavelength range, launch
650 nanometers -750 nanometers of far-red light, centre wavelength are located at 680 nanometers.
Second object of the present invention is to provide a plant growth Mn4+The preparation side of the garnet fluorescent powder of doping
Method.
One plant growth Mn4+The preparation method of the garnet fluorescent powder of doping, comprises the following steps：
(1) after analytically pure powder raw material is weighed by mol ratio, 3-5 milliliters of ethanol are added, are ground 30-120 minutes,
Powder raw material is uniformly mixed, obtains mixture；
(2) mixture obtained by step (1) is passed through oxidizing atmosphere in the environment of temperature is 950-1150 degree Celsius, kept the temperature
Make mixture that solid phase reaction occur when 2-8 is small, last furnace cooling obtains plant growth Mn4+The garnet fluorescent powder of doping.
Preferably, analytically pure material powder is Li in the step 1)2CO3、TiO2And MnCO3, according to Li+：Ti4+：
Mn2+=2：1：0.01 mol ratio weighs.
Preferably, analytically pure material powder is K in the step 1)2CO3、TiO2、SnO2And MnCO3, according to K+：
Ti4+：Sn4+：Mn2+=2：0.8：0.2：0.01 mol ratio weighs.
Preferably, analytically pure material powder is Cs in the step 1)2CO3、TiO2、GeO2And MnCO3, according to Cs+：
Ti4+：Ge4+：Mn2+=2：0.9：0.1：0.01 mol ratio weighs.
Preferably, analytically pure material powder is Li in the step 1)2CO3、TiO2、GeO2、SnO2And MnCO3, press
According to Li+：Ti4+：Ge4+：Sn4+：Ge4+：Mn2+=2：0.85：0.1：0.05：0.01 mol ratio weighs.
Third object of the present invention is to provide a kind of LED plant growth lamp.
A kind of LED plant growth lamp, including above-mentioned garnet fluorescent powder.
Preferably, the LED plant growth lamp further includes blue chip, the LED plant growth lamp is by blue chip
Formed with garnet fluorescent powder encapsulation.
Preferably, the blue chip is GaN base inorganic semiconductor LED grain, emission spectrum main peak is received positioned at 440
- 460 nanometers of rice.
The beneficial effects of the invention are as follows：
1. the plant growth Mn of the present invention4+The garnet fluorescent powder of doping makes up existing LED plant growth lamp dark red
With the missing in far-red light spectral limit, shortening plant growing cycle is played, promotes the effect of plant health fast-growth；
2. the LED plant growth lamp of the present invention have light efficiency height, less energy consumption, long lifespan, be simple to manufacture, that stability is good etc. is excellent
Point, can carry out large-scale production, and on the required illumination condition of plant normal growth is provided, it is practical with certain popularization
Value；
3. since LED type of wavelength is enriched, just it coincide with photosynthesis of plant spectral region, is obtained by combining on demand
Various types of complex spectrums are obtained, concentrate the light equilibrium irradiate crop of specific wavelength, the utilization rate of spectrum can be greatly improved, because
This, LED plant growth lamp of the invention can be effectively facilitated plant health fast-growth；
4. since LED information display system fever is few, take up space small, therefore, LED plant growth lamp of the invention can be used for multilayer cultivation
The three-dimensional combined system of training.
Brief description of the drawings
Fig. 1 is the plant growth Mn obtained in the embodiment of the present invention 14+The X-ray diffraction of the garnet fluorescent powder of doping
Figure.
Fig. 2 is the plant growth Mn obtained in the embodiment of the present invention 14+The excitation emission spectra of the garnet fluorescent powder of doping
Figure；Wherein, excitation wavelength is 460 nanometers, and the launch wavelength of monitoring is 680 nanometers.
Fig. 3 is the electroluminescent launching light spectrogram of LED plant growth lamp in the embodiment of the present invention 1.
Fig. 4 is the plant growth Mn obtained in the embodiment of the present invention 24+The excitation emission spectra of the garnet fluorescent powder of doping
Figure.
Fig. 5 is the plant growth Mn obtained in the embodiment of the present invention 34+The excitation emission spectra of the garnet fluorescent powder of doping
Figure.
Fig. 6 is the plant growth Mn obtained in the embodiment of the present invention 44+The X-ray diffraction of the garnet fluorescent powder of doping
Figure.
Fig. 7 is the plant growth Mn obtained in the embodiment of the present invention 44+The excitation emission spectra of the garnet fluorescent powder of doping
Figure.
Embodiment
Embodiment 1
One plant growth Mn4+The preparation method of the garnet fluorescent powder of doping, comprises the following steps：
(1) it is Li by analytically pure material powder2CO3、TiO2And MnCO3, according to Li+：Ti4+：Mn2+=2：1：0.01 rubs
You are placed in agate mortar in proportioning weighing, are added 3 milliliters of ethanol, are ground 35 minutes, be uniformly mixed powder raw material, mixed
Compound；
(2) mixture obtained by step (1) is placed in square crucible, it is 1050 Celsius to be put into tube furnace and be heated to temperature
Degree, is passed through oxidizing atmosphere, and insulation 2 makes mixture that solid phase reaction occur when small, last furnace cooling obtains plant growth Mn4+Mix
Miscellaneous garnet fluorescent powder.
Oxidizing atmosphere in step (2) is oxygen.
As shown in Figure 1, according to X-ray analysis as a result, the plant growth Mn obtained4+The garnet fluorescent powder of doping is pure
Phase Li2TiO3。
As shown in Fig. 2, with FLS980 should spectrometer measurement its excite at room temperature and emission spectra, under 460 nanometers of excitations,
Plant growth Mn4+The garnet fluorescent powder of doping shows Mn4+Feature it is sharp2Eg→4A2gDark red light emitting peak.
By obtained plant growth Mn4+The garnet fluorescent powder of doping directly encapsulates with blue chip and LED plants is made
Growth lamp, its electroluminescent emission spectrum are as shown in Figure 3.
Embodiment 2
One plant growth Mn4+The preparation method of the garnet fluorescent powder of doping, comprises the following steps：
(1) by analytically pure material powder K2CO3、TiO2、SnO2And MnCO3, according to K+：Ti4+：Sn4+：Mn2+=2：0.8：
0.2：0.01 mol ratio is weighed and is placed in agate mortar, adds 5 milliliters of ethanol, is ground 35 minutes, is mixed powder raw material
Uniformly, mixture is obtained；
(2) mixture obtained by step (1) is placed in square crucible, it is 1050 Celsius to be put into tube furnace and be heated to temperature
Degree, is passed through oxidizing atmosphere, and insulation 2 makes mixture that solid phase reaction occur when small, last furnace cooling obtains plant growth Mn4+Mix
Miscellaneous garnet fluorescent powder.
Oxidizing atmosphere in step (2) is oxygen.
According to X-ray analysis as a result, the plant growth Mn obtained4+The garnet fluorescent powder of doping is pure phase K2TiO3。
As shown in figure 4, with FLS980 should spectrometer measurement its excite at room temperature and emission spectra, under 460 nanometers of excitations,
Plant growth Mn4+The garnet fluorescent powder of doping shows Mn4+The sharp dark red light emitting peak of feature.
By obtained plant growth Mn4+The garnet fluorescent powder of doping directly encapsulates with blue chip and LED plants is made
Growth lamp.
Embodiment 3
One plant growth Mn4+The preparation method of the garnet fluorescent powder of doping, comprises the following steps：
(1) it is Cs by analytically pure material powder2CO3、TiO2、GeO2And MnCO3, according to Cs+：Ti4+：Ge4+：Mn2+=2：
0.9：0.1：0.01 mol ratio is weighed and is placed in agate mortar, adds 4 milliliters of ethanol, is ground 35 minutes, is made powder raw material
It is uniformly mixed, obtains mixture；
(2) mixture obtained by step (1) is placed in square crucible, it is 1050 Celsius to be put into tube furnace and be heated to temperature
Degree, is passed through oxidizing atmosphere, and insulation 2 makes mixture that solid phase reaction occur when small, last furnace cooling obtains plant growth Mn4+Mix
Miscellaneous garnet fluorescent powder.
Oxidizing atmosphere in step (2) is oxygen.
According to X-ray analysis as a result, the plant growth Mn obtained4+The garnet fluorescent powder of doping is pure phase Cs2TiO3。
As shown in figure 5, with FLS980 should spectrometer measurement its excite at room temperature and emission spectra, under 460 nanometers of excitations,
Plant growth Mn4+The garnet fluorescent powder of doping shows Mn4+The sharp dark red light emitting peak of feature.
By obtained plant growth Mn4+The garnet fluorescent powder of doping directly encapsulates with blue chip and LED plants is made
Growth lamp.
Embodiment 4
One plant growth Mn4+The preparation method of the garnet fluorescent powder of doping, comprises the following steps：
(1) it is Li by analytically pure material powder2CO3、TiO2、GeO2、SnO2And MnCO3, according to Li+：Ti4+：Ge4+：Sn4 +：Ge4+：Mn2+=2：0.85：0.1：0.05：0.01 mol ratio is weighed and is placed in agate mortar, is added 3 milliliters of ethanol, is ground
Mill 35 minutes, is uniformly mixed powder raw material, obtains mixture；
(2) mixture obtained by step (1) is placed in square crucible, it is 1050 Celsius to be put into tube furnace and be heated to temperature
Degree, is passed through oxidizing atmosphere, and insulation 2 makes mixture that solid phase reaction occur when small, last furnace cooling obtains plant growth Mn4+Mix
Miscellaneous garnet fluorescent powder.
Oxidizing atmosphere in step (2) is oxygen.
As shown in fig. 6, according to X-ray analysis as a result, the plant growth Mn obtained4+The garnet fluorescent powder of doping is pure
Phase Li2TiO3。
As shown in fig. 7, with FLS980 should spectrometer measurement its excite at room temperature and emission spectra, under 460 nanometers of excitations,
Plant growth Mn4+The garnet fluorescent powder of doping shows Mn4+The sharp red emission peak of feature.
By obtained plant growth Mn4+The garnet fluorescent powder of doping directly encapsulates with blue chip and LED plants is made
Growth lamp.
Claims (10)
- A 1. plant growth Mn4+The garnet fluorescent powder of doping, it is characterised in that its chemical general formula is (Li1-yMy)2 (Ti1-zLnz)O3：xMn4+, wherein M is one or more elements in alkaline-earth metal Na, K, Ru, Cs；Ln is Si, Ge, Sn, Zr In one or more elements, 0 ＜ x≤0.05,0 ＜ y≤1,0 ＜ z≤0.3.
- 2. plant growth Mn according to claim 14+The garnet fluorescent powder of doping, it is characterised in that described dark red Color fluorescent powder can be excited by the light in 300 nanometer of -550 nanometer wavelength range, launch 650 nanometers -750 nanometers of far-red light, Centre wavelength is located at 680 nanometers.
- 3. plant growth Mn according to claim 14+The preparation method of the garnet fluorescent powder of doping, its feature exist In comprising the following steps：(1) after analytically pure powder raw material is weighed by mol ratio, 3-5 milliliters of ethanol are added, grinds 30-120 minutes, makes powder Powder stock is uniformly mixed, and obtains mixture；(2) mixture obtained by step (1) is passed through oxidizing atmosphere in the environment of temperature is 950-1150 degree Celsius, keeps the temperature 2-8 Hour makes mixture that solid phase reaction occur, and last furnace cooling obtains plant growth Mn4+The garnet fluorescent powder of doping.
- 4. plant growth Mn according to claim 34+The preparation method of the garnet fluorescent powder of doping, its feature exist In analytically pure material powder is Li in the step 1)2CO3、TiO2And MnCO3, according to Li+：Ti4+：Mn2+=2：1：0.01 Mol ratio weighs.
- 5. plant growth Mn according to claim 34+The preparation method of the garnet fluorescent powder of doping, its feature exist In analytically pure material powder is K in the step 1)2CO3、TiO2、SnO2And MnCO3, according to K+：Ti4+：Sn4+：Mn2+=2： 0.8：0.2：0.01 mol ratio weighs.
- 6. plant growth Mn according to claim 34+The preparation method of the garnet fluorescent powder of doping, its feature exist In analytically pure material powder is Cs in the step 1)2CO3、TiO2、GeO2And MnCO3, according to Cs+：Ti4+：Ge4+：Mn2+= 2：0.9：0.1：0.01 mol ratio weighs.
- 7. plant growth Mn according to claim 34+The preparation method of the garnet fluorescent powder of doping, its feature exist In analytically pure material powder is Li in the step 1)2CO3、TiO2、GeO2、SnO2And MnCO3, according to Li+：Ti4+：Ge4+： Sn4+：Ge4+：Mn2+=2：0.85：0.1：0.05：0.01 mol ratio weighs.
- 8. a kind of LED plant growth lamp, it is characterised in that including garnet fluorescent powder as claimed in claim 1 or 2.
- 9. LED plant growth lamp according to claim 8, it is characterised in that the LED plant growth lamp further includes blue light Chip, the LED plant growth lamp are formed by blue chip and garnet fluorescent powder encapsulation.
- 10. LED plant growth lamp according to claim 9, it is characterised in that the blue chip is GaN base inorganic half Conductor LED grain, emission spectrum main peak are located at 440 nanometers -460 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126245.9A CN107987829A (en) | 2017-11-14 | 2017-11-14 | One plant growth Mn4+Garnet fluorescent powder, its preparation method and the LED plant growth lamp of doping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126245.9A CN107987829A (en) | 2017-11-14 | 2017-11-14 | One plant growth Mn4+Garnet fluorescent powder, its preparation method and the LED plant growth lamp of doping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107987829A true CN107987829A (en) | 2018-05-04 |
Family
ID=62031466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711126245.9A Pending CN107987829A (en) | 2017-11-14 | 2017-11-14 | One plant growth Mn4+Garnet fluorescent powder, its preparation method and the LED plant growth lamp of doping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107987829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022090444A1 (en) * | 2020-11-02 | 2022-05-05 | Merck Patent Gmbh | Phosphor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729267A (en) * | 2002-12-20 | 2006-02-01 | 丰田合成株式会社 | Phosphor and optical device using same |
| CN101796157A (en) * | 2007-09-03 | 2010-08-04 | 昭和电工株式会社 | Fluor and its manufacture method and the light-emitting device that uses this fluor |
| JP2012167147A (en) * | 2011-02-10 | 2012-09-06 | Panasonic Corp | Phosphor and light emitting device |
| CN105670622A (en) * | 2016-01-26 | 2016-06-15 | 井冈山大学 | Red fluorescent material for LED lamps for plant growth and preparation method of red fluorescent material |
-
2017
- 2017-11-14 CN CN201711126245.9A patent/CN107987829A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729267A (en) * | 2002-12-20 | 2006-02-01 | 丰田合成株式会社 | Phosphor and optical device using same |
| CN101796157A (en) * | 2007-09-03 | 2010-08-04 | 昭和电工株式会社 | Fluor and its manufacture method and the light-emitting device that uses this fluor |
| JP2012167147A (en) * | 2011-02-10 | 2012-09-06 | Panasonic Corp | Phosphor and light emitting device |
| CN105670622A (en) * | 2016-01-26 | 2016-06-15 | 井冈山大学 | Red fluorescent material for LED lamps for plant growth and preparation method of red fluorescent material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022090444A1 (en) * | 2020-11-02 | 2022-05-05 | Merck Patent Gmbh | Phosphor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xiang et al. | Enhancement of red emission and site analysis in Eu2+ doped new-type structure Ba3CaK (PO4) 3 for plant growth white LEDs | |
| Liu et al. | Deep-red-emitting Mg2InSbO6: Mn4+ phosphors with a double-perovskite structure for plant-cultivation LEDs: synthesis and photoluminescence properties | |
| Cao et al. | Li3Mg2NbO6: Mn4+ red phosphor for light-emitting diode: synthesis and luminescence properties | |
| Fang et al. | Light keys open locks of plant photoresponses: A review of phosphors for plant cultivation LEDs | |
| Yun et al. | Dual spectra band emissive Eu 2+/Mn 2+ co-activated alkaline earth phosphates for indoor plant growth novel phosphor converted-LEDs | |
| CN105165437B (en) | A kind of method for promoting tobacco seedling using LED plant growth light sources | |
| CN105154080B (en) | A kind of garnet fluorescent powder and its application | |
| Lv et al. | Improved thermal stability of the near‐infrared Al‐modulated Zn3Ga2GeO8: Cr3+ phosphors for plant growth applications | |
| Deng et al. | A thermal-stable Mn4+-doped far-red-emitting phosphor-converted LED for indoor plant cultivation | |
| Li et al. | F enhanced luminescence performance of SrLu2O4: Ce3+ glass ceramic for superior high-power artificial horticultural LEDs | |
| CN113174256A (en) | Mn (manganese)4+Doped red fluorescent powder and preparation method thereof | |
| Jia et al. | Optimization of the luminescence efficiency and moisture stability of a red phosphor KRb3Ge2F12: Mn4+ for indoor plant growth LED applications | |
| Deng et al. | Mn4+-activated red pc-LED for precisely matching the spectral absorption and circadian rhythm of photoreceptor toward promoting crop growth | |
| Wan et al. | Boosting up color tunability of Sr2Ga2GeO7 by energy transfer between Dy3+ and Eu3+ ions | |
| CN114806563A (en) | Fluorescent powder capable of promoting plant growth and preparation and application thereof | |
| Dai et al. | Novel Cr3+‐Doped Garnet Phosphor with Broadband Efficient Far‐Red Emission for Photochrome Matching Plant‐Lighting | |
| CN107987829A (en) | One plant growth Mn4+Garnet fluorescent powder, its preparation method and the LED plant growth lamp of doping | |
| CN113072940A (en) | Double-emission fluorescent powder for LED plant illumination and preparation method and application thereof | |
| US8057703B2 (en) | Three-band phosphor for multi-layer agricultural plastic film | |
| CN104728644A (en) | LED light supplementing lamp bead | |
| CN108559505B (en) | Mn (manganese)4+Activated plant growth LED lamp deep red fluorescent material and preparation method thereof | |
| CN108559504B (en) | High-sensitivity fluorescent temperature measuring material and preparation method thereof | |
| CN108456523B (en) | Fluorescent powder for LED lamp for plant growth and preparation method thereof | |
| CN114752380B (en) | Plant illumination blue light emitting device, illumination device and application | |
| CN116333739A (en) | Activator-free matrix luminous red fluorescent powder and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180504 |
|
| RJ01 | Rejection of invention patent application after publication |