CN108997013A - A kind of upper conversion transparent ceramic and its application in raising crystal silicon solar energy battery photoelectric conversion efficiency - Google Patents
A kind of upper conversion transparent ceramic and its application in raising crystal silicon solar energy battery photoelectric conversion efficiency Download PDFInfo
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- CN108997013A CN108997013A CN201810844553.3A CN201810844553A CN108997013A CN 108997013 A CN108997013 A CN 108997013A CN 201810844553 A CN201810844553 A CN 201810844553A CN 108997013 A CN108997013 A CN 108997013A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 89
- 239000000919 ceramic Substances 0.000 title claims abstract description 77
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 53
- 239000010703 silicon Substances 0.000 title claims abstract description 53
- 239000013078 crystal Substances 0.000 title claims abstract description 51
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 9
- 229910052765 Lutetium Inorganic materials 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 8
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 6
- 229910052691 Erbium Inorganic materials 0.000 claims description 60
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 57
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 3
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229910052727 yttrium Inorganic materials 0.000 claims 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims 1
- 239000011222 crystalline ceramic Substances 0.000 abstract description 6
- 229910002106 crystalline ceramic Inorganic materials 0.000 abstract description 6
- 239000000843 powder Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 10
- 238000004020 luminiscence type Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002243 precursor Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- -1 erbium ion Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- 235000015895 biscuits Nutrition 0.000 description 3
- 238000000462 isostatic pressing Methods 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Abstract
The present invention relates to a kind of upper conversion transparent ceramic and its application in crystal silicon solar energy battery photoelectric conversion efficiency is being improved, is belonging to crystalline ceramics applied technical field.It solves the problems, such as that existing crystal silicon solar energy battery is unable to the photon that absorbing wavelength is greater than its band gap width, improves its photoelectric conversion efficiency.Crystalline ceramics of the invention, chemical formula are (Y1‑x‑yErxMy)2O3, in formula, one of M Sc, La, Gd, Lu, Zr, Hf, Zn and Li or a variety of, x and y are element molar fraction, 0 < x≤0.2,0≤y < 0.5,0 < x+y < 0.5.The crystalline ceramics makes crystal silicon solar energy battery while guaranteeing constant less than the photonic absorption of 1100nm to sunlight medium wavelength, additionally it is possible to be located at the photon of 1430~1600nm using wavelength, improve the photoelectric conversion efficiency of crystal silicon solar energy battery.
Description
Technical field
The invention belongs to crystalline ceramics applied technical fields, and in particular to it is saturating to convert erbium ion-doped yttria-base in one kind
Bright ceramics and its application in raising crystal silicon solar energy battery photoelectric conversion efficiency.
Background technique
So far, the electric power and fuel of world energy sources demand mostly come from coal, oil and natural gas.However, this
Tens billion of tons of the carbon dioxide that a little combustion of fossil fuel generate accelerates greenhouse effects, and coal fired power generation also releases largely
The pollutants such as arsenic, lead, sulphur, these by-products cause tremendous influence to environment and economy.
For the sun every year to the energy of about 100000 terawatt (TW) of terrestrial radiation, this numerical value is about annual global energy requirements
10,000 times of total amount.It therefore, is that the mankind solve the seriously polluted important means of existing fossil energy using solar energy.Wherein, silicon
Based solar battery is more than 80% in the market share that global photovoltaic art occupies.Wherein crystal silicon solar energy battery has former material
Expect in plentiful supply, the advantages that high-efficient, stability is good, and environmental pollution is small and suitable outdoor utility.The band gap of crystalline silicon is
1.12eV, corresponding wavelength 1100nm, that is to say, that sunlight of the wavelength greater than 1100nm is cannot be by crystal silicon solar electricity
What pond utilized, this part fails absorbed infrared light and is equivalent to be incident on the 20% of the total solar energy of earth surface.As it can be seen that
If near infrared light of the crystal silicon solar energy battery to wavelength greater than 1100nm can be made to have absorption, and it is converted into electricity in turn
If energy, environment will be protected, economic aspect is promoted to generate facilitation to economizing on resources.
Currently, feasible solution is using upper transfer principle, the infrared portions in sunlight are modulated to can be with
In the wavelength band absorbed by crystal silicon solar energy battery (< 1100nm).According to the theory analysis table of Australian researchers
It is bright, pass through making full use of for the infrared light to solar spectrum medium wavelength greater than 1100nm, crystal silicon solar energy battery photoelectric conversion
Efficiency theory reaches as high as 40.2%, is much larger than the Xiao Keli-Kui Yise limit (30%).Up-conversion luminescence typically occurs in rare earth
In ion, wherein erbium ion has metastable energy level abundant and the longer life time of the level, is commonly used in up-conversion luminescence
Field.Erbium ion4I13/2Energy level exists within the scope of 1430~1600nm to be absorbed, and can be converted to wavelength and be existed
The up-conversion luminescence of 1000nm, 660nm, 560nm or so.Just area of solar cell can be used in improve crystal
The photoelectric conversion efficiency of silicon solar cell.2005, researcher Shalav of New South Wales, Australia etc. was adopted for the first time
With erbium ion-doped NaYF4Polycrystal powder is mixed into transparent acroleic acid binding agent, and place it in one it is two-sided
The back side of crystal silicon solar energy battery.Finally, under the laser excitation of the 1523nm of 5.1mW, outside crystal silicon solar energy battery
Quantum efficiency is up to 2.5%.Thereafter, other materials include oxide, fluoride, oxysulfide by sequential use in this side
To.It but is mostly still in such a way that micrometer fluorescent powder is dispersed in transparent organic polymer in these work
To improve crystal silicon solar energy battery efficiency.Powder disperses unevenly in transparent organic polymer, and due to powder
Particle size is in micron range, so that its light to wavelength less than 1100nm scatters seriously, the loss of light is big, and light power is with powder
The increase of body thickness and be remarkably decreased, while the transparency it is poor.Cause part exciting light be not fully absorbed and part on
Conversion, which shines, to be absorbed by crystal silicon solar energy battery, its application in crystal silicon solar energy battery in practice is unfavorable for.
Crystalline ceramics is a kind of inorganic optical material haveing excellent performance.Its high transparency for both having had glass, but also with pottery
The high-termal conductivity of porcelain, it is high-intensitive the advantages that, be widely used in the directions such as laser, illumination, nuclear medicine.Yttria-base transparent ceramics
It is low with cost of material, the features such as rare earth solubility is big, and phonon energy is small.Yttrium oxide is a kind of efficient up-conversion,
There are many about the report for converting application thereon in world wide.However up to the present, about erbium ion-doped yttria-base
Application of the crystalline ceramics in terms of improving crystal silicon solar energy battery photoelectric conversion efficiency is but reported without relevant research.
The erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention, can be by activating in control ceramic phosphor
Ion concentration, the thickness of fluorophor and its transmitance adjust its absorption to sunlight, and then change the efficiency of emergent light, I
Can control the porosity inside ceramics to adjust the power that matrix scatters light, while also avoiding because of fluorescent powder grain
Between scattering and caused by energy loss.
Summary of the invention
The purpose of the invention is to improve the photoelectric conversion efficiency of crystal silicon solar energy battery, the prior art is overcome not
Foot.The present invention, which provides, to be converted erbium ion-doped yttria-base transparent ceramics and its is improving crystal silicon solar energy battery light in one kind
Application in photoelectric transformation efficiency.
It is as follows that the present invention solves the technical solution that above-mentioned technical problem is taken:
The present invention provides and converts erbium ion-doped yttria-base transparent ceramics in one kind, and chemical formula is (Y1-x-yErxMy)2O3, in formula, one of M Sc, La, Gd, Lu, Zr, Hf, Zn and Li or a variety of, x and y are element molar fraction, and 0 < x≤
0.2,0≤y < 0.5,0 < x+y < 0.5.
Preferably, 0.001 < x≤0.15,0 < x+y < 0.5.
In above scheme, by the addition of M (Sc, La, Gd, Lu, Zr, Hf, Zn and Li's is one or more), be conducive to
Yttria-base transparent ceramics preparation or enhancing yttria-base transparent ceramics Up-conversion Intensity, or adjust absorb and
Emit position.
Preferably, one of M La, Gd, Lu, Zr, Hf and Zn or a variety of.
The present invention provides the above-mentioned upper erbium ion-doped yttria-base transparent ceramics of conversion and is improving crystal silicon solar energy battery
Application in photoelectric conversion efficiency is that two-sided crystalline substance is fixed in the upper surface of the upper erbium ion-doped yttria-base transparent ceramics of conversion
The back side of body silicon solar cell, and reflective mirror will be carried on the back and be fixed on the upper following table for converting erbium ion-doped yttria-base transparent ceramics
On face.
In above scheme, the excitation light source of the two-sided crystal silicon solar energy battery is the sunlight of focusing or out-focus.
In above scheme, the Up-conversion emission wavelength of the upper erbium ion-doped yttria-base transparent ceramics of conversion is less than
1100nm。
In above scheme, the two-sided crystal silicon solar energy battery is guaranteeing to sunlight medium wavelength less than 1100nm's
While the absorption of photon is constant, additionally it is possible to be located at the photon of 1430~1600nm using wavelength.
In above scheme, the introducing of the upper erbium ion-doped yttria-base transparent ceramics of conversion can be improved crystalline silicon too
The photoelectric conversion efficiency of positive energy battery.
Compared with prior art, the beneficial effects of the present invention are:
The upper high conversion efficiency of the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention, the transparency is good, can be with
It solves up-conversion phosphor in the prior art and mixes to disperse uneven in transparent organic polymer, the transparency is poor, is unfavorable for reality
The shortcomings that border is applied.
The erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention can be prepared into different thickness according to demand,
By increasing propagation distance of the sunlight in the upper erbium ion-doped yttria-base transparent ceramics of conversion, increase the suction to sunlight
It receives and utilizes, and then increase external quantum efficiency.Thus the upper erbium ion-doped yttria-base transparent ceramics of conversion can overcome polycrystal powder
End scattering is serious, only exists on surface layer and absorbs, the low problem of sun light utilization efficiency.
The two-sided crystalline silicon sun is fixed in the upper surface of the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention
The back side of energy battery, and be fixed on reflective mirror is carried on the back on the lower surface of the upper erbium ion-doped yttria-base transparent ceramics of conversion；On
It converts erbium ion-doped yttria-base transparent ceramics and passes through erbium ion4I13/2Energy level is close to 1430~1600nm range in sunlight
The absorption of infrared light is then converted into the up-conversion luminescence that wavelength is less than 1100nm, then is reflected back crystalline silicon too through back reflector
Positive energy battery, crystal silicon solar energy battery absorb this part up-conversion luminescence, and this guarantees do not influencing crystal silicon solar
It, can be by penetrating the crystalline silicon sun to those under the premise of battery is less than the absorption of 1100nm photon to sunlight medium wavelength
Can battery and unabsorbed wavelength be located at being absorbed and utilized to improve crystal silicon solar energy battery of 1430~1600nm photon
Photoelectric conversion efficiency.
The present invention provides a kind of new application scheme for yttria-base transparent ceramics.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention are applied in raising crystal silicon solar electricity
The structural schematic diagram when photoelectric conversion efficiency of pond.
Fig. 2 is the erbium ion-doped yttria-base transparent ceramics Er of upper conversion of the invention3+4I13/2The absorption spectrum of energy level,
It can be seen that and near-infrared upconversion emission and AM1.5 solar spectrum.
Fig. 3 is that the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention are applied in raising crystal silicon solar electricity
The principle schematic diagram when photoelectric conversion efficiency of pond.
Specific embodiment
In order to further appreciate that the present invention, the preferred embodiments of the invention are retouched With reference to embodiment
It states, but it is to be understood that these descriptions are intended merely to further illustrate the features and advantages of the present invention rather than to of the invention special
The limitation that benefit requires.
The erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention, chemical formula are (Y1-x-yErxMy)2O3, formula
In, one of M Sc, La, Gd, Lu, Zr, Hf, Zn and Li or a variety of, x and y are element molar fraction, 0 < x≤0.2,0≤y
< 0.5,0 < x+y < 0.5.
In above scheme, x and y are preferably 0.001 < x≤0.15,0 < x+y < 0.5.
In above scheme, when M is a variety of, the proportion of each component is not particularly limited, and is selected according to actual needs, and M is excellent
It is selected as one of La, Gd, Lu, Zr, Hf and Zn or a variety of；By the addition of M, be conducive to the preparation of yttria-base transparent ceramics
Or the Up-conversion Intensity of enhancing yttria-base transparent ceramics, or adjust and absorb and emit position.
A variety of ceramic preparation preparations can be used in the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention, such as
Coprecipitation, sol-gal process, combustion method, gel casting forming, tape casting, atmosphere sintering, hot pressed sintering etc., the present invention mentions
For a kind of detailed process of the preparation method of the erbium ion-doped yttria-base transparent ceramics of upper conversion, but not limited to this.
The preparation method of the upper erbium ion-doped yttria-base transparent ceramics of conversion provided by the invention, first uses solid phase legal system
Standby precursor powder, then prepares biscuit using dry-pressing formed mode, then isostatic pressing is carried out in cold isostatic press, then use
Vacuum-sintering mode is sintered ceramics, finally by annealing removal residual stress and colour center under air atmosphere, obtains to be used to mention
The erbium ion-doped yttria-base transparent ceramics of upper conversion of high crystal silicon solar energy battery photoelectric conversion efficiency.It specifically includes following
Step:
Step 1: according to chemical formula (Y1-x-yErxMy)2O3, weigh in molar ratio Y element, Er element and M element (Sc,
One of La, Gd, Lu, Zr, Hf, Zn and Li or a variety of) solid chemical compound, be put into ball grinder, mechanical mill crush 24
~60h obtains precursor powder；
Wherein, solid chemical compound is preferably oxide, fluoride, chloride or the salt containing respective element；
Step 2: the precursor powder that step 1 is obtained is put into dry-pressing formed in mold, obtained biscuit is put into cold etc. quiet
Isostatic pressing is carried out in press, obtains ceramic body；
Step 3: the ceramic body that step 2 is obtained is put into vacuum drying oven, 10 are kept the temperature under the conditions of 1700~1850 DEG C
~30h, obtains ceramics；
Anneal in air atmosphere Step 4: the ceramics that step 3 is obtained are put into Muffle furnace, removal residual stress and
Colour center obtains the erbium ion-doped yttria-base transparent ceramics of conversion.
The erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention are improving crystal silicon solar energy battery photoelectricity turn
The application changed in efficiency: being that two-sided crystalline silicon is fixed on too in the upper surface of the upper erbium ion-doped yttria-base transparent ceramics of conversion
The back side of positive energy battery, and be fixed on reflective mirror is carried on the back on the lower surface of the upper erbium ion-doped yttria-base transparent ceramics of conversion,
As shown in Figure 1, i.e. crystal silicon solar energy battery, the erbium ion-doped yttria-base transparent ceramics of upper conversion and back reflective mirror from up to
Under set gradually, and the surface of crystal silicon solar energy battery receives the irradiation of sunlight；
Wherein, between crystal silicon solar energy battery, the erbium ion-doped yttria-base transparent ceramics of upper conversion and back reflective mirror
The fixed form of contact surface be not particularly limited, generally use stickup and fix；The exciting light of two-sided crystal silicon solar energy battery
Source is the sunlight of focusing or out-focus；The thickness of the upper erbium ion-doped yttria-base transparent ceramics of conversion, which can according to need, to be set
It sets, by increasing propagation distance of the sunlight in the upper erbium ion-doped yttria-base transparent ceramics of conversion, can increase to too
Sunlight is absorbed and utilized, and then increases external quantum efficiency, and usually it is with a thickness of 1~50mm.
The erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention are improving crystal silicon solar energy battery photoelectricity turn
Change the principle of efficiency are as follows: as shown in Fig. 2, the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention is visible and close red
Outer Up-conversion emission spectral wavelength is less than 1100nm, Er3+4I13/2The absorption spectrum of energy level is in 1430~1600nm；Crystalline silicon
After solar battery fully absorbs sunlight medium wavelength less than 1100nm photon, the photon greater than 1100nm then penetrates crystalline silicon
The erbium ion-doped yttria-base transparent ceramics of upper conversion of solar battery, battery back can continue to penetrate crystalline silicon to these
Solar battery and unabsorbed wavelength are located at the absorption of the photon of 1430~1600nm, are then converted into wavelength and are less than
The up-conversion luminescence of 1100nm, then it is reflected back crystal silicon solar energy battery through back reflector, it is absorbed by crystal silicon solar energy battery,
As shown in Figure 3；Therefore, the erbium ion-doped yttria-base transparent ceramics of upper conversion of the invention are not influencing crystal silicon solar electricity
Under the premise of pond is less than the absorption of 1100nm photon to sunlight medium wavelength, crystal silicon solar energy battery also is absorbed and utilized
1430~1600nm photon, and then improve the photoelectric conversion efficiency of crystal silicon solar energy battery.
Present invention institute in improving crystal silicon solar energy battery photoelectric conversion efficiency is further illustrated with reference to embodiments
The preparation of the erbium ion-doped yttria-base transparent ceramics of upper conversion of application.
Embodiment 1~11
The chemical formula of the erbium ion-doped yttria-base transparent ceramics of upper conversion of embodiment 1~11 is as shown in table 1.
The preparation method of the erbium ion-doped yttria-base transparent ceramics of upper conversion of embodiment 1~11 is as follows, specific to use
Raw material, process conditions it is as shown in table 1:
Step 1: according to chemical formula (Y1-x-yErxMy)2O3, the solid of Y element, Er element and M element is weighed in molar ratio
Compound is put into ball grinder, and mechanical mill crushes 24~60h, obtains precursor powder；
Wherein, solid chemical compound is preferably oxide, fluoride, chloride or the salt containing respective element；
Step 2: the precursor powder that step 1 is obtained is put into dry-pressing formed in mold, obtained biscuit is put into cold etc. quiet
Isostatic pressing is carried out in press, obtains ceramic body；
Step 3: the ceramic body that step 2 is obtained is put into vacuum drying oven, 10 are kept the temperature under the conditions of 1700~1850 DEG C
~30h, obtains ceramics；
Anneal in air atmosphere Step 4: the ceramics that step 3 is obtained are put into Muffle furnace, removal residual stress and
Colour center obtains the erbium ion-doped yttria-base transparent ceramics of conversion.
The chemical formula of the erbium ion-doped yttria-base transparent ceramics of upper conversion of 1 embodiment 1~11 of table prepares raw material and system
Standby process conditions
The preparation method of the erbium ion-doped yttria-base transparent ceramics of upper conversion described in the invention is only used to explain
The present invention is not intended to limit the present invention.Coprecipitation, sol-gal process, combustion method, gel casting forming, tape casting, gas
Atmosphere sintering, the ceramic preparations such as hot pressed sintering can prepare of the present invention to improve crystal silicon solar energy battery light
The erbium ion-doped yttria-base transparent ceramics of upper conversion of photoelectric transformation efficiency.It is done all within the spirits and principles of the present invention
Any modification, equivalent replacement should be included within the scope of the present invention.
Claims (8)
1. erbium ion-doped yttria-base transparent ceramics are converted on, which is characterized in that chemical formula is (Y1-x-yErxMy)2O3, in formula,
M is one of Sc, La, Gd, Lu, Zr, Hf, Zn and Li or a variety of, and x and y are element molar fraction, 0 < x≤0.2,0≤y <
0.5,0 < x+y < 0.5.
2. the upper erbium ion-doped yttria-base transparent ceramics of conversion according to claim 1, which is characterized in that 0.001 < x
≤ 0.15,0 < x+y < 0.5.
3. the upper erbium ion-doped yttria-base transparent ceramics of conversion according to claim 1, which is characterized in that M La,
One of Gd, Lu, Zr, Hf and Zn or a variety of.
4. the upper erbium ion-doped yttria-base transparent ceramics of conversion described in claim 1-3 any one are improving crystalline silicon too
Application in positive energy cell photoelectric transfer efficiency, which is characterized in that by the upper erbium ion-doped yttria-base transparent ceramics of conversion
The back side of two-sided crystal silicon solar energy battery is fixed in upper surface, and back reflective mirror is fixed on the upper erbium ion-doped oxidation of conversion
On the lower surface of yttrium base transparent ceramic.
5. the upper erbium ion-doped yttria-base transparent ceramics of conversion according to claim 4 are improving crystal silicon solar electricity
Application in the photoelectric conversion efficiency of pond, which is characterized in that the excitation light source of the two-sided crystal silicon solar energy battery be focus or
The sunlight of out-focus.
6. the upper erbium ion-doped yttria-base transparent ceramics of conversion according to claim 4 are improving crystal silicon solar electricity
Application in the photoelectric conversion efficiency of pond, which is characterized in that the erbium ion-doped yttria-base transparent ceramics of the upper conversion upper turn
Launch wavelength is changed less than 1100nm.
7. the upper erbium ion-doped yttria-base transparent ceramics of conversion according to claim 4 are improving crystal silicon solar electricity
Application in the photoelectric conversion efficiency of pond, which is characterized in that the two-sided crystal silicon solar energy battery is guaranteeing to sunlight medium wave
While the long absorption less than the photon of 1100nm is constant, additionally it is possible to be located at the photon of 1430~1600nm using wavelength.
8. the upper erbium ion-doped yttria-base transparent ceramics of conversion according to claim 4 are improving crystal silicon solar electricity
Application in the photoelectric conversion efficiency of pond, which is characterized in that the introducing of the upper erbium ion-doped yttria-base transparent ceramics of conversion
It can be improved the photoelectric conversion efficiency of crystal silicon solar energy battery.
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