CN206774255U - A kind of GaAs photovoltaic isotope battery - Google Patents
A kind of GaAs photovoltaic isotope battery Download PDFInfo
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- CN206774255U CN206774255U CN201720547651.1U CN201720547651U CN206774255U CN 206774255 U CN206774255 U CN 206774255U CN 201720547651 U CN201720547651 U CN 201720547651U CN 206774255 U CN206774255 U CN 206774255U
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Abstract
The utility model discloses a kind of GaAs photovoltaic isotope battery, it includes：Seal casinghousing (1), wherein filled with dispersivity radiator beta-ray (2)；GaAs photovoltaic semiconductor thin film in seal casinghousing rolls up (3), and fluorescent material (4) is filled with space between volume.GaAs photovoltaic isotope automatic light source of the present utility model, it can be worked under conditions of no ambient light photograph, and battery volume compact, external output current disclosure satisfy that the power reguirements of in general MEMS up to few tens of microamps.
Description
Technical field
The utility model belongs to the crossing domain of isotope battery or photovoltaic cell, and in particular to a kind of GaAs photovoltaic is same
The plain battery in position.
Background technology
Traditional photovoltaic cell converts light energy into electric energy by photovoltaic effect, but it must be under the irradiation of external light source
It could work, can not be by ambient light because being under night or some closed occasions which has limited the application of photovoltaic cell
What source was irradiated to.In addition, conventional photovoltaic battery is not suitable for using in MEMS (MEMS), because in micro-electro-mechanical systems
System such as robot, implantable MEMS, wireless senser, artificial cardiac pacemaker, the production of Portable movable electronics
In the miniature instrument equipment such as product field, space or deep-sea unmanned detector, typically require that power supply is miniaturized, but conventional photovoltaic battery
In order to fully expand its light-receiving area, it is very big that its photovoltaic module is typically made area, and semiconductor layer can not crimp to be rigid,
Therefore conventional photovoltaic battery cannot be used directly in above-mentioned MEMS.
The concept of fluorescence isotope battery is had been proposed that to solve the above problems, it is three level stack formula device,
First layer is isotope metal level, and it can be decayed to launch β particles by β, such as63Ni, its Beta-ray average energy sent
Measure as 17.42KeV；147Pm, its Beta-ray average energy sent are 61.93KeV；137Ce, it sends Beta-ray average
Energy is 187.1KeV；90Sr, its Beta-ray average energy sent are 195.8KeV, and these above-mentioned isotope metals are generally used
Vapour deposition process or sputtering method are deposited on non-radioactive metal layer of the same race, such as63Ni is deposited on the thickness of some tens of pm
In common nickel sheet；Second tunic is fluorescent material layer, and it can send under the irradiation for the β particles that above-mentioned isotope layer is launched
Fluorescence；Third layer is photovoltaic semiconductors layer, it typically is semiconductor layers such as polysilicon layer, monocrystalline silicon layer, carborundum, gallium nitride,
For being electric energy by fluorescence conversion.But such fluorescence isotope battery runs into many problems in practice：Subject matter is single
Electric current caused by plane product is very faint, for example, 1-4nA/cm2, so faint electric current almost have industrial applicibility, reason
Although total external output current can be improved by expanding cell area by above saying, due to isotope metal at least within
Layer and photovoltaic semiconductors layer are rigid layers, enlarged-area can not be carried out in a manner of curling, therefore area expansion certainly will cause the fluorescence
Isotope battery volume is excessive, can not meet the design object of miniaturization.
The utility model aims to solve the problem that above-mentioned all problems.
Utility model content
The utility model provides a kind of GaAs photovoltaic isotope battery, and it includes：
Seal casinghousing 1, space existing for dispersivity radiator beta-ray 2 is available for wherein having；
GaAs photovoltaic semiconductor thin film volume 3 in seal casinghousing, is filled with fluorescent material 4 between volume in space.
Preferably, the fluorescent material is ZnS:Cu fluorescent material, Y2O2S:Eu fluorescent material, fluorescent RE powder or calcium halophosphate activated by antimony andmanganese are glimmering
Light powder.
Preferably, the dispersivity radiator beta-ray 2 be tritium gas or63Ni powders.They are all the radioactive sources that pure β decays occur,
Only produce a kind of ray of β rays.Beta-ray energy caused by them is less than 20keV.Benefit using low energy beta rays is true
Ensuring safety property and as far as possible few infringement or not semiconductor film material.Why it is referred to as " dispersivity " radiator beta-ray be because
Disperse or any one in the closed shell can be spread in for them free flow pattern, it is ubiquitous, exist everywhere.
Preferably, the GaAs photovoltaic semiconductor thin film is GaAs unijunction semiconductive thin film, double junction semiconductor film
Or three pn junction p n film.
Preferably, GaAs photovoltaic semiconductor thin film is fexible film, and its thickness is 5-10 microns.
The composition method for expressing of above-mentioned fluorescent material is A:B is the usual method for expressing in this area, represents to adulterate in A crystal
A small amount of B atoms.With ZnS:Exemplified by Cu, its expression is doped with a small amount of Cu in ZnS crystal, i.e., is taken with a part of Cu atoms
For the Zn atoms in ZnS crystal, the atom adulterated improves fluorescence generation efficiency usually as activator.
The beneficial effects of the utility model：
1st, the utility model using dispersivity radiator beta-ray such as tritium gas or63The β particle-irradiation fluorescence that Ni powder radiates
Powder, fluorescence is produced, and then go irradiation GaAs photovoltaic semiconductor thin film to go to realize conversion of the luminous energy to computer with the fluorescence.This phase
When in having provided light source for oneself in the photovoltaic cells, therefore the dependence to external light source is completely eliminated, therefore arsenic of the present utility model
Gallium photovoltaic isotope battery can be used at night and can also used under closed occasion.
2nd, GaAs photovoltaic isotope battery of the present utility model can easily be miniaturized.Because in the utility model
By beta ray source by rigid isotope metal level change into dispersivity radioactive source tritium gas or63Ni powder, and by traditional phosphor
The bed of material changes over fluorescent material, and does not affect curling from flexible GaAs photovoltaic semiconductor thin film, gas and powder, and soft
Property semiconductor film is easy to crimp again, thus with general thin formula photovoltaic cell or traditional three level stack formula fluorescence nuclear battery Central Plains
The rigid semiconductor layer for the very large area that the expansion of this needs is set is different, and the utility model can crimp flexible semiconductor film
Get up and be put into a manner of height-volume is compact in the closed housing of very little, realize miniaturization.
3rd, in traditional three level stack formula fluorescence nuclear battery, fluorescence generation efficiency is low.Because fluorescent material layer is only straight
Junction could produce fluorescence to the side of isotope metal level by β particle-irradiations, and towards photovoltaic semiconductors layer that
Face (i.e. away from the side of isotope metal level) can not be by β particle-irradiations, therefore, at least fluorescent material layer of half
External surface area be wasted.Similarly, in whole fluorescence caused by fluorescent material layer, also only directive photovoltaic semiconductors that
Half fluorescence is used to produce electric energy, and directive isotope metal level second half fluorescence is then wasted.It is as described above more
Weight loss in efficiency make it that total conversion efficiency of traditional three level stack formula fluorescence nuclear battery from β particles to electric energy is very low, body
Electric current caused by present unit area is very faint, for example, 1-4nA/cm2, so faint electric current is almost without industry practicality
Property.And the utility model then substantially increases conversion efficiency by cleverly structure design：Not by arsenic in the utility model
Gallium photovoltaic semiconductor thin film one is enclosed to enclose the land close to one and rolled tightly completely, but space is left between each circle, and in these spaces
Fill fluorescent material, and be filled with the closed shell in the utility model dispersivity radiator beta-ray such as tritium gas or63Ni powder,
Because of the dispersivity of radiator beta-ray gas, it is fully able to the gap location being present between each fluorescent powder grain, thus tritium gas or63Ni powder
Occur decay caused by β particles be in the closed shell it is ubiquitous, therefore, all appearances of all fluorescent material
The radiation that face can receive these β particles produces fluorescence, i.e., 100% fluorescent material external surface area is obtained for utilization, do not appointed
The fluorescent material external surface area what is wasted.And fluorescent material is filled among each circle of gallium arsenide semiconductor film, it is launched glimmering
Light also almost 100% is all irradiated on gallium arsenide semiconductor film and is utilized, almost without fluorescence losses.Therefore, this practicality
New GaAs photovoltaic isotope battery is on fluorescence generation efficiency and fluorescence utilization ratio, all than traditional three level stack formula
Fluorescence nuclear battery greatly improves.Along with the utility model can by flexibility gallium arsenide semiconductor film strip be made, such as
Long generous size is 1000mm*10mm*0.005mm, is rolled up when in use, both make it that resultant battery is compact-sized, overall
Product very little, and effectively it is exaggerated work area so that total externally output current has been had been provided with to be micro- up to tens microamperes of ranks
The industrial applicibility of electromechanical device power supply.
Brief description of the drawings
Fig. 1 is the structural representation of GaAs photovoltaic isotope battery of the present utility model；Wherein each reference implication
It is as follows：
1st, closed shell；2nd, dispersivity radiator beta-ray；3rd, GaAs photovoltaic semiconductor thin film；4th, fluorescent material.
Embodiment
Content of the present utility model is further described below by embodiment, but does not therefore limit this practicality
It is new.
Embodiment 1
Structure is as shown in Figure 1.Closed shell is the closed glass pipe that a diameter of 10mm is highly 10mm, wherein accommodating
The a roll of film being rolled into by the gallium arsenide semiconductor film of the generous strip for 1000mm*10mm*0.005mm of length, between volume between
Gap is 0.003-0.03mm, and the ZnS that particle diameter is 2 μm or so is filled with gap:Cu fluorescent powder grains, closed glass pipe remaining
Space by tritium gas or63Ni powder is full of.Plain conductor and described closed not destroying is drawn respectively in the two sides of semiconductive thin film
It is brought out being used as positive pole and negative pole on the premise of glass tube.The GaAs photovoltaic isotope battery is overall, and externally output current can
Up to 10-30 μ A, the current requirements of in general MEMS or pacemaker are disclosure satisfy that.
Embodiment above describes the advantages of general principle of the present utility model and principal character and the utility model.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, rather than limit the scope of the utility model in any way, do not departing from this reality
On the premise of with new scope, the utility model also has various changes and modifications, and these changes and improvements both fall within requirement and protected
In the range of shield.
Claims (5)
1. a kind of GaAs photovoltaic isotope battery, it is characterised in that it includes：
Seal casinghousing (1), space existing for dispersivity radiator beta-ray (2) is available for wherein having；
GaAs photovoltaic semiconductor thin film in seal casinghousing rolls up (3), and fluorescent material (4) is filled with space between volume.
2. GaAs photovoltaic isotope battery according to claim 1, it is characterised in that the fluorescent material is ZnS:Cu is glimmering
Light powder, Y2O2S:Eu fluorescent material, fluorescent RE powder or halogen calcium phosphate fluoressent powder.
3. GaAs photovoltaic isotope battery according to claim 1, it is characterised in that the dispersivity radiator beta-ray (2)
Be tritium gas or63Ni powders.
4. GaAs photovoltaic isotope battery according to claim 1, it is characterised in that wherein described GaAs photovoltaic half
Conductor thin film is GaAs unijunction semiconductive thin film, double junction semiconductor film or three pn junction p n films.
5. GaAs photovoltaic isotope battery according to claim 1, it is characterised in that wherein GaAs photovoltaic semiconductors
Film is fexible film, and its thickness is 5-10 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720547651.1U CN206774255U (en) | 2017-05-17 | 2017-05-17 | A kind of GaAs photovoltaic isotope battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720547651.1U CN206774255U (en) | 2017-05-17 | 2017-05-17 | A kind of GaAs photovoltaic isotope battery |
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| CN206774255U true CN206774255U (en) | 2017-12-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997788A (en) * | 2017-05-17 | 2017-08-01 | 深圳贝塔能量技术有限公司 | A kind of GaAs photovoltaic isotope battery |
| CN108231236A (en) * | 2018-01-26 | 2018-06-29 | 吉林大学 | Radiation scintillation body formula nuclear battery |
-
2017
- 2017-05-17 CN CN201720547651.1U patent/CN206774255U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997788A (en) * | 2017-05-17 | 2017-08-01 | 深圳贝塔能量技术有限公司 | A kind of GaAs photovoltaic isotope battery |
| CN108231236A (en) * | 2018-01-26 | 2018-06-29 | 吉林大学 | Radiation scintillation body formula nuclear battery |
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