CN211013245U - Ultraviolet detection device for broadband solar blind light - Google Patents
Ultraviolet detection device for broadband solar blind light Download PDFInfo
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- CN211013245U CN211013245U CN201921945107.8U CN201921945107U CN211013245U CN 211013245 U CN211013245 U CN 211013245U CN 201921945107 U CN201921945107 U CN 201921945107U CN 211013245 U CN211013245 U CN 211013245U
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- solar blind
- ultraviolet detection
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- response mechanism
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Abstract
The utility model relates to a solar blind light ultraviolet detection technical field, in particular to be used for wide band solar blind light ultraviolet detection device. The device comprises an ultraviolet light emitting source, a spectrum down-converter is arranged in the light emitting direction of the ultraviolet light emitting source, a spectrum response mechanism is arranged in the spectrum down-converter along the light direction, a differential circuit is connected and arranged on the spectrum response mechanism, and the differential circuit is connected with an output unit and a display unit. The device is simple to operate, convenient to test, and stable, and effective broadband solar blind light ultraviolet detection is realized.
Description
Technical Field
The utility model relates to a solar blind light ultraviolet detection technical field, in particular to be used for wide band solar blind light ultraviolet detection device.
Background
Because the ozone layer in the atmospheric layer has strong absorption effect on ultraviolet radiation of 200-280nm, the light in the wave band is difficult to reach the earth surface, and the light in the wave band is called solar blind light.
Solar blind ultraviolet detectors are receiving wide attention for their wide application in military and civilian fields, such as ultraviolet water purification, missile tracking and control, bio-imaging contrast agents, liquid crystal displays, and the like.
Up to now, the technical methods for solar blind uv detection are mainly photomultiplier tubes, wide band gap semiconductors and inorganic perovskite quantum dots. However, photomultiplier tubes are generally bulky, fragile, and require high bias voltages, thus limiting their practical application; in contrast, the photodetector based on the wide-bandgap semiconductor has a fast response speed and an inherent optical blind property, but the bandgap of the photodetector is greater than 3.8 eV, so that the high-quality growth of the crystal is difficult to realize; furthermore, cesium-lead-halide inorganic perovskite quantum dots (CsPbX)3X = Cl, Br, I) is used for solar-blind photodetection, which can provide an effective and low-cost method to improve solar-blind uv detection, but the use of toxic elements and atmospheric instability factors may cause a series of practical industrial application problems.
Based on the above defects of the current solar blind ultraviolet detection technology, designing a solar blind ultraviolet detector device with simple preparation method, environmental friendliness and wide response range is a problem which needs to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the above-mentioned problem that present day blind ultraviolet detection exists, provide one kind and be used for wide band day blind light ultraviolet detection device.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a be used for wide band solar blind light ultraviolet detection device, includes ultraviolet luminous source, and the light of ultraviolet luminous source jets out the direction and sets up the spectrum down-converter, and the spectrum down-converter sets up the spectral response mechanism along the light direction, and the spectral response mechanism is connected and is provided with the difference circuit, and the difference circuit is connected with output unit and display element.
Preferably, the source of ultraviolet radiation is a xenon lamp. For example, a 150 watt xenon lamp is used as the ultraviolet light source.
Preferably, the spectral down-converter is an organic-inorganic transparent film.
Preferably, the spectrum down-converter is an organic-inorganic transparent thin film composed of rare earth ion doped PMMA.
Preferably, the spectral down-converter is Gd2O3:Eu3+-organic-inorganic transparent films of PMMA.
Preferably, the spectral response mechanism is a silicon-based photoresistor, a silicon-based battery or a common semiconductor.
Preferably, a thin-film spectral down-converter is attached to the surface of the spectral response mechanism.
Preferably, the output unit is an oscilloscope or an electrochemical workstation. An oscilloscope or the like is used as an output unit to convert a photoelectric signal invisible to the naked eye into a visible image.
Preferably, the differential circuit has two inputs connected to the spectral response mechanism and an output connected to the output unit.
For the above technical problems, common semiconductor materials, such as Si, TiO2，CuO2Although the above limitations can be avoided, their band gaps are relatively narrow and, therefore, do not absorb solar-blind ultraviolet light efficiently.
In order to further avoid new limitations on the basis of improving the above technical problems, the present application combines the advantages of the respective solar-blind spectral converters and conventional semiconductor materials to obtain the technical solution described above.
The utility model has the advantages that: firstly, the problems that toxic elements are used and unstable factors in the atmosphere can cause a series of practical industrial application problems are avoided; secondly, the test is convenient and the manufacture is simple; and fourthly, the broadband solar blind ultraviolet detection is simplified, the response range is wide, and the problem that the solar blind ultraviolet cannot be effectively absorbed due to narrow band gap of common semiconductor materials is solved.
Drawings
Fig. 1 shows a schematic structural diagram of the present invention.
Fig. 2 shows a top view of a part of the structure of the present invention.
In the figure: 100 ultraviolet luminous source, 200 spectrum down converter, 300 spectrum response mechanism, 400 difference circuit, 500 output unit and 600 display unit.
Detailed Description
Further refinements will now be made on the basis of the representative embodiment shown in the figures. It should be understood that the following description is not intended to limit the embodiments to one preferred embodiment. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the embodiments as defined by the appended claims.
In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration specific embodiments in accordance with the embodiments. Although these embodiments are described in sufficient detail to enable those skilled in the art to practice the embodiments, it is to be understood that these examples are not limiting, such that other examples may be used and that corresponding modifications may be made without departing from the spirit and scope of the embodiments.
Specifically, referring to fig. 1, fig. 1 shows a device for detecting broadband solar blind ultraviolet, as shown in fig. 1, a spectrum down-converter 200 is disposed in a light emitting direction of an ultraviolet light emitting source 100, a spectrum response mechanism 300 is disposed in the spectrum down-converter 200 along the light direction, a differential circuit 400 is disposed in the spectrum response mechanism 300 in a connecting manner, and the differential circuit 400 is connected to an output unit 500 and a display unit 600.
Wherein, the ultraviolet light source 100 is a xenon lamp, for example, a 150 watt xenon lamp is adopted as the ultraviolet light source 100; here, as shown in fig. 2, the spectrum down-converter 200 is an organic-inorganic transparent film, and the film-like spectrum down-converter 200 is attached to the surface of the spectrum response mechanism 300; the spectral response mechanism 300 is a silicon-based photoresistor, a silicon-based battery or a common semiconductor; the two input terminals of the differential circuit 400 are connected to the spectral response mechanism 300, and the output terminal is connected to the output unit 500; the output unit 500 is an oscilloscope or an electrochemical workstation. An oscilloscope or an electrochemical workstation is used as the output unit 500, so that photoelectric signals invisible to the naked eye are converted into visible images. The display unit 600 is a computer or the like.
The spectrum down converter 200 is an organic-inorganic transparent film formed by rare earth ion doped PMMA, in particular to Gd2O3:Eu3+-organic-inorganic transparent films of PMMA. The preparation method comprises the following steps:
as shown in FIG. 1, the xenon lamp irradiates solar blind ultraviolet rays to Gd2O3:Eu3+An organic-inorganic transparent film of PMMA, the film being coated on the silicon-based photo resistor, two positive and negative electrodes of the differential circuit 400 being connected to the silicon-based photo resistor, the output terminal being connected to an oscilloscope, the oscilloscope being connected to a USB interface of a computer by a data line.
When the xenon lamp is used, the main brake switch is turned on, then the switch of the xenon lamp is turned on, the xenon lamp is preheated for 15 min, all devices are connected, and the solar blind light ultraviolet excitation wavelength is adjusted. Is coated with Gd under the excitation of solar blind light ultraviolet pulse2O3:Eu3+The silicon-based photoresistor of the PMMA film generates a photoelectric signal, the oscilloscope can clearly capture the photoelectric response, the image of the oscilloscope can be displayed on a computer, and the image data on the computer is stored for data analysis and processing.
The device is simple to operate, convenient to test, and stable, and effective broadband solar blind light ultraviolet detection is realized.
The film adopted in the scheme is self-made, and the preparation method comprises the following steps:
preparation of Gd2O3:5%Eu3+PMMA film, first Gd is prepared2O3: Eu3+And (3) fluorescent powder.
34 ml of Gd (NO) was stirred at 0.1 mol/L3) And 1.6 ml, 0.1 mol/L Eu (NO)3)3Mixing the solution for 30min, then adding a certain amount of 0.1 mol/l NaOH solution, and adjusting the pH value of the mixed solution to 7; stirring the mixed solution for 3 hours, transferring the solution into an autoclave with the capacity of 50 ml, heating the solution in a drying oven at 200 ℃ for 12 hours, and naturally cooling the solution to room temperature; centrifuging and washing the obtained sample with deionized water for at least three times, transferring the precipitate into a crucible, and drying in a forced air drying oven at 60 ℃ for 24 h (drying); then heat treatment is carried out in a muffle furnace: heating for 2 h under the protection of nitrogen, heating to 800 deg.C, maintaining the temperature for 2 h, cooling at-121 deg.C, and naturally cooling to room temperature to obtain Gd2O3: Eu3+And (3) fluorescent powder.
Dissolving 3 g of PMMA in 20 ml of N, N-Dimethylformamide (DMF), and stirring for 30 minutes to obtain a transparent solution; mixing with appropriate amount of Gd2O3: eu3+ fluorescent powder is uniformly dispersed in transparent solution, stirred for 30min, then the viscous mixture is spin-coated on the surface of the silicon photoresistor, and finally dried for 3 h in a drying oven at 70 ℃ to obtain Gd2O3:Eu3+-a transparent composite film of PMMA.
For purposes of explanation, specific nomenclature is used in the above description to provide a thorough understanding of the described embodiments. It will be apparent, however, to one skilled in the art that these specific details are not required in order to practice the embodiments described above. Thus, the foregoing descriptions of specific embodiments described herein are presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. It will be apparent to those skilled in the art that certain modifications, combinations, and variations can be made in light of the above teachings.
Claims (9)
1. The utility model provides a be used for wide band solar blind light ultraviolet detection device, includes ultraviolet luminous source, its characterized in that: the light emitting direction of the ultraviolet light emitting source is provided with a spectrum down-converter, the spectrum down-converter is provided with a spectrum response mechanism along the light direction, the spectrum response mechanism is connected with a differential circuit, and the differential circuit is connected with the output unit and the display unit.
2. The device for broadband solar blind ultraviolet detection according to claim 1, characterized in that: the ultraviolet luminous source is a xenon lamp.
3. The device for broadband solar blind ultraviolet detection according to claim 1 or 2, characterized in that: the spectrum down-converter is an organic-inorganic transparent film.
4. The device for broadband solar blind ultraviolet detection according to claim 3, characterized in that: the spectrum down converter is an organic-inorganic transparent film formed by doping rare earth ions with PMMA.
5. The device according to claim 4, wherein the device comprises: the spectrum down-converter is Gd2O3:Eu3+-organic-inorganic transparent films of PMMA.
6. The device for broadband solar blind ultraviolet detection according to claim 3, characterized in that: the spectral response mechanism is a silicon-based photoresistor, a silicon-based battery or a common semiconductor.
7. The device for broadband solar-blind ultraviolet detection according to claim 1 or 2 or 4 or 5 or 6, characterized in that: a film-like spectral down-converter is attached to the surface of the spectral response mechanism.
8. The device for broadband solar blind ultraviolet detection according to claim 1, characterized in that: the output unit is an oscilloscope or an electrochemical workstation.
9. The device for broadband solar blind ultraviolet detection according to claim 1, characterized in that: the two input ends of the differential circuit are connected to the spectral response mechanism, and the output end of the differential circuit is connected to the output unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921945107.8U CN211013245U (en) | 2019-11-12 | 2019-11-12 | Ultraviolet detection device for broadband solar blind light |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921945107.8U CN211013245U (en) | 2019-11-12 | 2019-11-12 | Ultraviolet detection device for broadband solar blind light |
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| CN211013245U true CN211013245U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112079377A (en) * | 2020-08-31 | 2020-12-15 | 洛阳师范学院 | Alkali metal doped nano cubic crystal material and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112079377A (en) * | 2020-08-31 | 2020-12-15 | 洛阳师范学院 | Alkali metal doped nano cubic crystal material and application thereof |
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