CN108534055B - Fluorescent light-collecting solar lighting system - Google Patents
Fluorescent light-collecting solar lighting system Download PDFInfo
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
- F21S9/035—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit being integrated within the support for the lighting unit, e.g. within or on a pole
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
- F21V23/023—Power supplies in a casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a fluorescent light-collecting solar lighting system, which comprises a nano two-dimensional material surface loaded CsBX
3(B is an element having a valence of + 2; and X is a halogen element) and a fluorescent optical waveguide component and an illumination component using the nanocrystal as a fluorescent material. The fluorescent light waveguide component is used for converting solar energy into electric energy and comprises a fluorescent material and a solar cell; the fluorescent material absorbs sunlight and re-emits fluorescence, and the solar cell converts the fluorescence into electric energy; the lighting part is electrically connected with the fluorescent light waveguide part to form a closed circuit and provide lighting for the outside. The fluorescent material used by the system has the characteristics of high energy conversion efficiency, high absorption coefficient, wide absorption spectrum, narrow emission band, high emission intensity, small self-loss, good spectral matching with a solar cell, good intermiscibility with an optical waveguide material and stable performance. In addition, the application requirements of different places such as road lighting, intelligent home, environmental decoration and the like can be met due to the various material characteristics of the system.
Description
Technical Field
The invention relates to the technical field of nano composite materials and solar photovoltaic devices, in particular to a fluorescent light-collecting solar lighting system.
Background
The fluorescent light-collecting solar photovoltaic device absorbs sunlight and re-emits fluorescence by virtue of the fluorescent material in the optical waveguide medium, so that higher energy conversion efficiency can be obtained. Compared with the traditional concentrating solar cell, the fluorescent light-collecting solar photovoltaic deviceThe solar photovoltaic component can absorb direct light and scattered light and avoid device loss caused by a heat effect, so that the photovoltaic power generation cost caused by an expensive solar tracking system and a cooling system is reduced, and the solar photovoltaic component has a better photovoltaic building integrated application prospect. At present, the fluorescent light-collecting solar photovoltaic device is mainly applied to the field of buildings as exterior glass of the buildings, for example, the device is applied to ground laying and roadside illumination of a commercial pedestrian street, provides illumination for a commercial area and plays a role in modifying the pavement of the commercial street, so that the fluorescent light-collecting solar photovoltaic device has a good application prospect. However, the fluorescent material as a key component of the fluorescent light-collecting solar photovoltaic device has the problems of low light absorption coefficient, low fluorescent quantum efficiency, serious self-loss phenomenon and the like. With CsPbX
3The perovskite nanocrystals represented by the perovskite nanocrystals have excellent optical and electrical properties due to high light absorption coefficient, low defect density, long carrier diffusion distance, bipolar carrier transmission and the like; the nanometer two-dimensional material has good mechanical, optical and electrical properties, is beneficial to providing good carriers and transmission channels for the nanometer crystals, and is widely applied to material research in the photoelectric field. Through the optimization of the structure, the fluorescent material which has the advantages of high absorption coefficient, wide absorption spectrum, narrow emission band, high emission intensity, small self-loss, high fluorescence quantum efficiency, good spectral matching with a solar cell, good intermiscibility with an optical waveguide material and stable performance is obtained. Therefore, a surface load CsBX based on a nano two-dimensional material is developed
3The fluorescent light-collecting solar road lighting system with nanocrystalline (B is element containing +2 valence state; X is halogen element) is very important.
Disclosure of Invention
Based on the technical problems in the background art, the present invention aims to provide a fluorescent light-collecting solar lighting system, so as to obtain a nanocomposite material having high energy conversion efficiency, high absorption coefficient, wide absorption spectrum, narrow emission band, high emission intensity, low self-loss, good spectral matching with a solar cell, good compatibility with an optical waveguide material, and stable performance, and to meet the application requirements of different places such as road lighting, smart home, environmental decoration, and the like. The specific technical scheme is as follows:
the invention provides a fluorescent light-collecting solar lighting system, which is characterized by comprising: takes a surface loading structure of a nano two-dimensional material as CsBX
3Fluorescent light guide component and lighting component using nanocrystalline (B is element containing +2 valence state; X is halogen element) as fluorescent material, wherein:
the fluorescent light waveguide component is used for converting solar energy into electric energy and comprises a fluorescent material and a solar cell; wherein the fluorescent material absorbs sunlight and re-emits fluorescence, and the solar cell converts the fluorescence into electric energy;
the lighting component is electrically connected with the fluorescent light waveguide component to form a closed circuit and provide illumination to the outside.
Optionally, the system is laid on the ground to provide lighting for streets or is arranged on the outer wall of a building to provide lighting and decoration for rooms.
Optionally, the CsBX
3The X can be independently Cl, Br and I or two halogen elements are used according to any proportion to prepare the nanocrystalline so as to obtain the fluorescent materials with different band gaps, colors and stability.
Optionally, the CsBX
3The element B can independently use Sn and Ge elements, IIIA group In and Tl elements, VA group Bi and Sb elements, transition metal Cu and Mn elements, or two or more elements are used according to any proportion to prepare the nanocrystalline so as to obtain the fluorescent materials with different band gaps, colors and stability.
Optionally, the nano two-dimensional material may be graphene, graphene oxide, reduced graphene oxide, boron nitride, black phosphorus, and molybdenum disulfide, so as to obtain fluorescent materials with different carriers supporting nanocrystals, and obtain various photoelectric characteristics.
Optionally, the fluorescent material is prepared by the following steps:
s1) according to solvent a: the volume ratio of the solvent b is 1: (15-35) preparing a mixed solution, adding a cesium source according to the concentration of 12-42 g/L, and sequentially keeping the mixed solution at the vacuum condition of 80-140 ℃ for 1.5-3 hours and the argon condition of 140-190 ℃ for 0.5-2.5 hours to obtain a cesium precursor solution M; wherein the solvent a is monounsaturated fatty acid, and the solvent b is linear olefin with 13-24 carbon atoms;
s2) according to solvent a: solvent b: the volume ratio of the solvent c is 1: (10-30): (0.6-3.6) preparing a mixed solution, adding a B source, an X source and a nano two-dimensional material according to the concentration of 5-25 g/L, 10-40 g/L and 0.1-2.5 g/L in sequence, and keeping the mixture for 0.5-1 h under the vacuum condition at the temperature of 80-140 ℃ and 3-4 h under the argon condition at the temperature of 140-190 ℃ in sequence to obtain a nano two-dimensional material loaded B, X precursor solution N (B is an element with a valence state of + 2; and X is a halogen element); wherein the solvent a is monounsaturated fatty acid, the solvent b is linear olefin with 13-24 carbon atoms, and the solvent c is unsaturated enamine with 13-24 carbon atoms;
s3) following the precursor solution M: the volume ratio of the precursor solution N is 1: (15-45), injecting the precursor solution M obtained in the step S1) into the precursor solution N obtained in the step S2) to obtain a nano composite material solution, centrifuging to obtain a precipitate, and drying at a vacuum low temperature of 80-140 ℃ to obtain the fluorescent material.
Optionally, the cesium source is CsNO
3、Cs
2CO
3、Cs
2SO
4One or more of the above; the source B is one or more of chloride and oxide containing +2 valence state elements; the X source is HX or PbX
2、CsX、NH
4One or more of X (X is halogen element).
Optionally, the fluorescent light waveguide component further comprises a toughened glass cover, an anti-reflection film, an upper waveguide medium, a lower waveguide medium, a bottom protection seat and a connecting table;
wherein, the fluorescent material is packaged in a closed space formed by the upper waveguide medium and the lower waveguide medium;
the upper surface of the upper waveguide medium is sequentially provided with an antireflection film and a toughened glass cover;
the lower surface of the lower waveguide medium is sequentially provided with a bottom protection seat and a connecting platform;
the connecting table can connect a plurality of optical waveguide components in series, so that the illumination effect is improved.
Optionally, the solar cell is a stacked solar cell formed by separately using crystalline silicon, amorphous silicon, cuingase(s), CuZnSeS, an organic solar cell, a dye-sensitized solar cell, a perovskite solar cell, or two or more of the above single solar cells, or a stacked solar cell formed by one or more of the above solar cells and a thermoelectric material, so as to improve the photoelectric conversion efficiency of the system.
Optionally, the lighting component comprises: the lamp comprises a lampshade, an electricity storage component, a lamp holder, a waterproof cover, a lighting lamp and a lamp holder;
the lamp holder is arranged in the center of the upper part of the lamp holder;
the electric storage component is arranged on the upper surface of the lamp holder and is connected with the fluorescent light waveguide component;
the lampshade is arranged on the upper surface of the lamp holder in a covering mode;
the illuminating lamp and the waterproof cover are sequentially arranged on the lower surface of the lamp holder.
Optionally, the system further includes: a gain member electrically connected to said fluorescent light guide member and said illumination member;
the gain section includes: at least one of a temperature detector, a noise detector, an air quality detector, a wireless signal receiver, a display screen and an intelligent controller; through the combination of different gain parts, the road lighting system can realize the functions of road lighting, ground decoration, information display and the like, and meet the application requirements of different places.
The invention has the beneficial effects that: the fluorescent light waveguide component is used for converting solar energy into electric energy and comprises a fluorescent material and a solar cell; the fluorescent material absorbs sunlight and re-emits fluorescence, and the solar cell converts the fluorescence into electric energy. The lighting part is electrically connected with the fluorescent light waveguide part to form a closed circuit and provide illumination to the outside. The fluorescent material has the characteristics of high energy conversion efficiency, high absorption coefficient, wide absorption spectrum, narrow emission band, high emission intensity, small self-loss, good spectral matching with a solar cell, good intermiscibility with an optical waveguide material and stable performance. In addition, the system has various material characteristics and wide application range, has the functions of road illumination, ground decoration, information display and the like, and can meet the application requirements of different places.
Drawings
FIG. 1 is a schematic structural diagram of a fluorescent concentrating solar lighting system according to the present invention;
in the figure, 1 is a lampshade; 2-an electricity storage component; 3-connecting the electricity storage part with the illuminating lamp; 4-lamp holder, 5-waterproof cover; 6-lighting lamp; 7-lamp bracket; 8-connecting the electricity storage component with the fluorescent light waveguide component; 9-toughened glass cover; 10-antireflection film; 11-upper waveguide medium; 12-patterned fluorescent material; 13-lower waveguide medium; 14-bottom coupled solar cell; 15-bottom protective seat; 16-connecting table; 17-gain component; 18-temperature probe; 19-noise detector; 20-air quality detector; 21-wireless signal receiver; 22-Intelligent controller; 23-display screen.
FIG. 2 shows CsPbI loaded with reduced graphene oxide used in example 1 of the present invention
3TEM images of the nanocrystals.
FIG. 3 shows CsPbI loaded with reduced graphene oxide used in example 1 of the present invention
3PL and UV patterns of the nanocrystals.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In order to solve the problems of low extinction coefficient, low fluorescence quantum efficiency, serious self-loss phenomenon and the like of a fluorescent material in the prior art, the invention provides a fluorescent light-collecting solar lighting system, which loads CsBX on the surface of a nano two-dimensional material
3(B is a compound containing+2 valence state elements; x is halogen element) nanocrystalline is a fluorescent material, and has the characteristics of high energy conversion efficiency, high absorption coefficient, wide absorption spectrum, narrow emission band, high emission intensity, low self-loss, good spectral matching with a solar cell, good intermiscibility with an optical waveguide material and stable performance. In addition, the application requirements of different places such as road lighting, intelligent home, environmental decoration and the like can be met due to the various material characteristics of the system.
The following generally describes a fluorescent concentrating solar lighting system according to an embodiment of the present invention.
In one implementation, the lighting system includes:
loading CsBX on the surface of nano two-dimensional material
3Fluorescent light guide component and lighting component using (B is element containing +2 valence state; X is halogen element) nano crystal as fluorescent material; wherein:
the fluorescent light waveguide component is used for converting solar energy into electric energy and comprises a fluorescent material and a solar cell; wherein the fluorescent material absorbs sunlight and re-emits fluorescence, and the solar cell converts the fluorescence into electric energy;
the lighting component is electrically connected with the fluorescent light waveguide component to form a closed circuit and provide illumination to the outside. Specifically, the lighting system provided above may be laid on the ground to provide lighting for streets, or may be installed on an outer wall of a building to provide lighting for indoors, which is not limited in the embodiments of the present invention.
The fluorescent light-collecting solar lighting system provided by the embodiment of the invention is described in detail through the specific implementation manner.
Fig. 1 is a schematic structural diagram of a fluorescent concentrating solar lighting system according to the present invention, which can be laid on the ground to provide lighting for streets.
The lighting component is positioned on the ground, has the functions of electric quantity storage and lighting, and comprises a lampshade 1, an electric storage component 2, an electric storage component and lighting lamp connecting wire 3, a lamp holder 4, a waterproof cover 5, a lighting lamp 6, a lamp holder 7 and an electric storage component and fluorescent light waveguide component connecting wire 8. The lamp holder 4 is positioned in the center above the lamp holder 7, the electric storage components and the fluorescent light waveguide component connecting wires 8 which are uniformly distributed in the lamp holder are respectively connected with the electric storage components 2 and the fluorescent light waveguide component solar cells 14, the electric storage components 2 are positioned in the center above the lamp holder 4 and cover the lamp shade 1, the waterproof cover 5 and the illuminating lamp 6 are distributed and installed at the bottom of the lamp holder 4, and the electric storage components and the illuminating lamp connecting wires 3 are uniformly distributed in the lamp holder 4 and are connected with the electric storage components 2 and the illuminating lamp 6;
the fluorescent light waveguide component is positioned under the ground, has the functions of absorbing sunlight and converting the sunlight into electric energy, and comprises a toughened glass cover 9, an antireflection film 10, an upper waveguide medium 11, a patterned fluorescent material 12, a lower waveguide medium 13, a bottom coupling solar cell 14, a bottom protection seat 15 and a connecting platform 16. The fluorescent light waveguide component adopts a packaging structure, a toughened glass cover 9, an antireflection film 10, an upper waveguide medium 11, a patterned fluorescent material 12, a lower waveguide medium 13, a bottom coupling solar cell 14, a bottom protection seat 15 and a connecting table 16 are sequentially arranged from the ground downwards, and the bottom coupling solar cell 14 is connected with the outer lamp electricity storage component 2 through electricity storage components uniformly distributed in the outer lamp bracket 7 and a connecting wire 8;
in one implementation, the system may implement a variety of applications through the gain component 17, including one or more of the accessories of the temperature detector 18, the noise detector 19, the air quality detector 20, the wireless signal receiver 21, the intelligent controller 22, the low-power display screen 23, and the like. The gain member 17 is connected to the fluorescent light guide member solar cell 14. As can be seen from the above, the lighting system provided by the embodiment of the present invention can provide functions such as road lighting or information display by configuring the gain component, so that the lighting system has stronger adaptability to different environmental requirements.
In another implementation manner, the solar cell is a stacked solar cell composed of crystalline silicon, amorphous silicon, cuingase(s), CuZnSeS, an organic solar cell, a dye-sensitized solar cell, a perovskite solar cell, or two or more of the above single solar cells, or a stacked solar cell composed of one or more of the above solar cells and a thermoelectric material, so as to improve the photoelectric conversion efficiency of the system.
In another embodiment, the fluorescent concentrating solar lighting provided by the embodiments of the present invention further comprises a surface loading CsBX of the nano two-dimensional material
3(B ═ Pb, Sn, Ge, In, Tl, Bi, Sb, Cu, Mn; X ═ Cl, Br, I) preparation of nanocrystalline fluorescent materials.
The following is a detailed description of the reduced graphene oxide loaded CsPbI provided by the embodiments of the present invention
3The preparation of the nanocrystalline fluorescent material is explained in detail.
In one implementation, 0.6gCsNO is added
3And Cs
2CO
3Sequentially adding the mixed cesium source, 10mL of oleic acid and 100mL of octadecene into a 250mL spherical bottle, and sequentially keeping the mixed cesium source, the oleic acid and the octadecene at 90 ℃ for 1.5 hours and 140 ℃ for 2.5 hours under argon to obtain a colorless cesium precursor solution M1; 0.1g of PbO and 1g of PbI were mixed
2Sequentially adding 0.5mL of oleic acid, 1.5mL of oleylamine, 0.2g of reduced graphene oxide and 40mL of octadecene into a 150mL three-necked bottle, and sequentially keeping the mixture at the temperature of 120 ℃ for 0.5h under vacuum condition and at the temperature of 190 ℃ for 3h under argon condition to obtain black reduced graphene oxide loaded lead and iodine precursor solution N1; rapidly injecting 2mL of solution M1 into the solution N1 to obtain a brownish red solution, centrifuging to obtain a brownish red precipitate, and drying at 140 ℃ under a vacuum low-temperature condition to obtain reduced graphene oxide loaded CsPbI
3The TEM image of a sample of the nanocrystalline fluorescent material is shown in FIG. 2, and the UV and PL images are shown in FIG. 3.
In another implementation, 1.2g Cs
2SO
4Sequentially adding 2mL of oleic acid and 50mL of octadecene into a 250mL spherical bottle, and sequentially keeping the mixture for 2.5h at the temperature of 110 ℃ under vacuum and 1.5h at the temperature of 170 ℃ under argon to obtain a colorless cesium precursor solution M2; 1.1g of PbI
2PbO mixed lead source and 0.3g of HI, NH
4I, sequentially adding a mixed iodine source, 3.5mL of oleic acid, 1.5mL of oleylamine, 0.05g of reduced graphene oxide and 10mL of octadecene into a 150mL three-necked bottle, and sequentially keeping the mixture at 80 ℃ for 1h under vacuum condition and at 150 ℃ for 3.5h under argon condition to obtain a reduced graphene oxide loaded lead and iodine precursor solution N2; rapidly injecting 0.4mL of solution M2 into solution N2 to obtain brownish red solution, centrifuging to obtain brownish red precipitate, and vacuum cooling at 90 deg.CDrying the part to obtain reduced graphene oxide loaded CsPbI
3A nanocrystalline fluorescent material.
The cesium source is CsNO
3、Cs
2CO
3、Cs
2SO
4One or more of the above; the source B is one or more of chloride and oxide containing +2 valence state elements; the X source is HX or PbX
2、CsX、NH
4One or more of X (X is halogen element).
In another implementation, the CsBX
3The X can be independently Cl, Br and I or two halogen elements are used according to any proportion to prepare the nanocrystalline so as to obtain the fluorescent materials with different band gaps.
In another implementation, the CsBX
3The element B can independently use Sn and Ge elements, IIIA group In and Tl elements, VA group Bi and Sb elements, transition metal Cu and Mn elements, or two or more elements are used for preparing the nanocrystalline according to any proportion so as to obtain the fluorescent materials with different band gaps.
In another implementation manner, the nano two-dimensional material may be graphene, graphene oxide, reduced graphene oxide, boron nitride, black phosphorus, and molybdenum disulfide, so as to obtain fluorescent materials with different carriers supporting nanocrystals.
As can be seen from the above, the fluorescent concentrating solar lighting system provided by the embodiment of the invention comprises a nano two-dimensional material surface loaded CsBX
3(B is an element having a valence of + 2; and X is a halogen element) and a fluorescent optical waveguide component and an illumination component using the nanocrystal as a fluorescent material. The fluorescent light waveguide component is used for converting solar energy into electric energy and comprises a fluorescent material and a solar cell; the fluorescent material absorbs sunlight and re-emits fluorescence, and the solar cell converts the fluorescence into electric energy. The lighting part is electrically connected with the fluorescent light waveguide part to form a closed circuit and provide illumination to the outside. The fluorescent material has the characteristics of high energy conversion efficiency, high absorption coefficient, wide absorption spectrum, narrow emission band, high emission intensity, small self-loss, good spectral matching with a solar cell, good intermiscibility with an optical waveguide material and stable performance. In addition, the system is versatileThe material characteristics can meet the application requirements of different places such as road lighting, intelligent home, environmental decoration and the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A fluorescent concentrating solar lighting system, the lighting system comprising: takes a surface loading structure of a nano two-dimensional material as CsBX
3The fluorescent light guide component and the lighting component which are made of fluorescent material, and the gain component which is electrically connected with the fluorescent light guide component and the lighting component; wherein, B is an element containing +2 valence state; x is a halogen element;
the fluorescent light waveguide component is used for converting solar energy into electric energy and comprises a patterned fluorescent material and a solar cell; the patterned fluorescent material absorbs sunlight and re-emits fluorescence, and the solar cell converts the fluorescence into electric energy;
the lighting component is electrically connected with the fluorescent light waveguide component to form a closed circuit and provide illumination to the outside;
the gain section includes: at least one of a temperature detector, a noise detector, an air quality detector, a wireless signal receiver, a display screen and an intelligent controller;
the fluorescent material is prepared by the following steps:
s1) according to solvent a: the volume ratio of the solvent b is 1: (15-35) preparing a mixed solution, adding a cesium source according to the concentration of 12-42 g/L, and heating under a vacuum condition to obtain a cesium precursor solution M; wherein the solvent a is monounsaturated fatty acid, and the solvent b is linear olefin with 13-24 carbon atoms;
s2) according to solvent a: solvent b: the volume ratio of the solvent c is 1: (10-30): (0.6-3.6) preparing a mixed solution, adding a B source, an X source and a nano two-dimensional material according to the concentration of 5-25 g/L, 10-40 g/L and 0.1-2.5 g/L in sequence, and heating under a vacuum condition to obtain a precursor solution N loaded with the nano two-dimensional material B, X, wherein B is an element containing a valence state of + 2; x is a halogen element; the solvent a is monounsaturated fatty acid, the solvent b is linear olefin with 13-24 carbon atoms, and the solvent c is unsaturated enamine with 13-24 carbon atoms;
s3) following the precursor solution M: the volume ratio of the precursor solution N is 1: (15-45), injecting the precursor solution M obtained in the step S1) into the precursor solution N obtained in the step S2) to obtain a nano composite material solution, centrifuging to obtain a precipitate, and drying at 90 ℃ or 140 ℃ in vacuum to obtain the fluorescent material;
the cesium source is CsNO
3、Cs
2CO
3、Cs
2SO
4One or more of the above; the source B is one or more of chloride and oxide containing +2 valence state elements; the X source is HX or PbX
2、CsX、NH
4One or more of X, wherein X is a halogen element.
2. The system of claim 1, wherein the system is laid on the ground to provide lighting for streets, floor decoration and information display, or is installed on the outer wall of a building to provide lighting, decoration and information display indoors.
3. The system of claim 1, wherein the CsBX is configured to be a CsBX
3Wherein X is Cl, Br, I singly or in any proportionThe two halogen elements are used for preparing the nanocrystalline so as to obtain the fluorescent materials with different band gaps.
4. The system of claim 1, wherein the CsBX is configured to be a CsBX
3The element B independently uses Sn and Ge elements, IIIA group In and Tl elements, VA group Bi and Sb elements, transition metal Cu and Mn elements, or uses two or more elements according to any proportion to prepare the nanocrystalline so as to obtain the fluorescent materials with different band gaps.
5. The system according to claim 1, wherein the nano two-dimensional material is graphene, graphene oxide, reduced graphene oxide, boron nitride, black phosphorus and molybdenum disulfide, so as to obtain fluorescent materials with different carrier-supported nanocrystals.
6. The system of claim 1, wherein the fluorescent light guide component further comprises a tempered glass cover, an anti-reflection film, an upper waveguide medium, a lower waveguide medium, a bottom protection seat and a connection platform; the fluorescent material is packaged in a closed space formed by the upper waveguide medium and the lower waveguide medium; the upper surface of the upper waveguide medium is sequentially provided with an antireflection film and a toughened glass cover; the lower surface of the lower waveguide medium is sequentially provided with a bottom protection seat and a connecting platform; the connecting table connects a plurality of optical waveguide components in series, so that the illumination effect is improved.
7. The system according to claim 1, wherein the solar cell is a stacked solar cell composed of two or more of the above single solar cells, or a stacked solar cell composed of one or more of the above single solar cells and thermoelectric materials, and the photoelectric conversion efficiency of the system is improved.
8. The system of claim 1, wherein the illumination component comprises: the lamp comprises a lampshade, an electricity storage component, a lamp holder, a waterproof cover, a lighting lamp and a lamp holder; the lamp holder is arranged in the center of the upper part of the lamp holder; the electric storage component is arranged on the upper surface of the lamp holder and is connected with the fluorescent light waveguide component; the lampshade is arranged on the upper surface of the lamp holder in a covering mode; the illuminating lamp and the waterproof cover are sequentially arranged on the lower surface of the lamp holder.
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| CN110093065B (en) * | 2019-04-29 | 2021-04-02 | 清华大学 | Nanocrystalline ink with fluorescence characteristic, preparation method and patterning application thereof |
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