CN109346607A - A kind of perovskite solar battery light-absorption layer layered structure - Google Patents
A kind of perovskite solar battery light-absorption layer layered structure Download PDFInfo
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- CN109346607A CN109346607A CN201811250984.3A CN201811250984A CN109346607A CN 109346607 A CN109346607 A CN 109346607A CN 201811250984 A CN201811250984 A CN 201811250984A CN 109346607 A CN109346607 A CN 109346607A
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- ore bed
- calcium titanium
- titanium ore
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
- H10K30/15—Sensitised wide-bandgap semiconductor devices, e.g. dye-sensitised TiO2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/221—Carbon nanotubes
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/549—Organic PV cells
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Abstract
A kind of perovskite solar battery light-absorption layer layered structure, belongs to technical field of solar batteries.Calcium titanium ore bed among electron transfer layer and hole transmission layer is divided into two layers, calcium titanium ore bed close to electron transfer layer is the calcium titanium ore bed of one-dimensional electric material embedded type structure, it is the calcium titanium ore bed for being not embedded into SWCNT type structure between SWCNT embedded type calcium titanium ore bed and hole transmission layer, is not embedded into the conventional calcium titanium ore bed of type relative to SWCNT embedded type calcium titanium ore bed thinner thickness.Using technical solution of the present invention, carrier mobility be can be improved.
Description
Technical field
The invention belongs to technical field of solar batteries, are related to a kind of pair of perovskite solar battery calcium titanium ore bed (extinction
Layer) separate zone stimulation, so that its carrier mobility is improved, to improve the side of perovskite solar cell photoelectric transformation efficiency
Method.
Background technique
Perovskite solar battery is caused as emerging third generation solar cell with its many good characteristic
The research enthusiasm of vast researcher, achieves a series of achievement, so that its commercialized possibility is constantly promoted.How
The performance for improving device, is the target that we seek assiduously all the time.However, previous research focuses mostly in electron-transport
The research of layer, hole transmission layer, perovskite light-absorption layer band engineering and modifying interface has no as new device architecture aspect
Too many report.And the often variation of device architecture, it will usually its performance is greatly improved, so reasonably to perovskite solar-electricity
Pool structure is changed, and is had great importance for further increasing its device performance.
Summary of the invention
The present invention is by carrying out layering preparation to perovskite solar battery calcium titanium ore bed (light-absorption layer), and in layered structure
Middle insertion has the one-dimensional electric nano material (using single-walled carbon nanotube (SWCNT) in this example) of good electric conductivity, to mention
Its high carrier mobility, and then promote device performance.
A kind of perovskite solar battery light-absorption layer layered structure, main contents are as follows: in electron transfer layer and hole transport
The intermediate calcium titanium ore bed of layer is divided into two layers, and the calcium titanium ore bed close to electron transfer layer is the calcium titanium of one-dimensional electric nano material insertion
Ore bed improves carrier transport rate to reach, and then promotes the purpose of its incident photon-to-electron conversion efficiency, so layer generally accounts for about calcium titanium
The 80% of ore bed overall thickness；It is one-dimensional to be not embedded between the calcium titanium ore bed and hole transmission layer of one-dimensional electric nano material insertion
The calcium titanium ore bed of electrical-conductive nanometer material, it is therefore an objective to prevent the insertion of carbon nanotube from causing device positive and negative anodes short-circuit, to reach every
From effect, account for about the 20% of calcium titanium ore bed overall thickness.Be not embedded into the conventional calcium titanium ore bed of one-dimensional electric nanomaterial-type relative to
One-dimensional electric nano material embedded type calcium titanium ore bed thinner thickness.
The calcium titanium ore bed of one-dimensional electric material one-dimensional electric nano material embedded type structure is that one-dimensional electric nano material is equal
Even dispersion is embedded into calcium titanium ore bed.The conventional calcium titanium ore bed for being not embedded into type is relative to one-dimensional electric nano material embedded type knot
Without insertion one-dimensional electric nano material in calcium titanium ore bed for the calcium titanium ore bed of structure.
The one-dimensional electric nano material that the present invention is embedded in calcium titanium ore bed in principle need to be met the size requirements.Specific size is wanted
Ask general are as follows: one-dimensional material diameter should be far smaller than calcium titanium ore bed overall thickness, and (one-dimensional material diameter is less than or equal to 10nm, perovskite
Layer overall thickness is about 650nm), in order to avoid influence the crystalline quality of calcium titanium ore bed.The present invention is with single-walled carbon nanotube (SWCNT)
Example, hereinafter referred to as SWCNT, the preferably length of SWCNT are 300-600nm, and the density being preferably embedded into is 1 × 105―1×1010Root/
cm3(insertion SWCNT calcium titanium ore bed).
The present invention, which is focused on, is embedded in carbon nanotube by the layering to perovskite solar battery calcium titanium ore bed, with carbon nanometer
Excellent electric conductivity is managed, the transmission rate of calcium titanium ore bed carrier is accelerated.Further, since SWCNT is in calcium titanium ore bed difference crystal grain
Between run through, crystal boundary can be eliminated to a certain extent to the inhibition of carrier, to improve carrier mobility, Jin Erda
To the purpose for improving perovskite solar cell photoelectric transformation efficiency.The calcium titanium ore bed of SWCNT embedded type structure be not embedded into
Calcium titanium ore bed ingredient in the calcium titanium ore bed of SWCNT type structure is the same.
By taking the perovskite solar battery of formal planar structure as an example: (1) among electron transfer layer and hole transmission layer
Calcium titanium ore bed be divided into two layers, two layers of thickness is adjustable.Calcium titanium ore bed close to electron transfer layer is SWCNT embeding layer, to reach
To the effect for improving carrier transport rate, this thickness degree accounts for the 80% of calcium titanium ore bed overall thickness；(2) on SWCNT embeding layer
It is rectangular at the calcium titanium ore bed for being not embedded into SWCNT, it is therefore an objective to prevent the insertion of SWCNT cause device electronic, hole transmission layer be connected,
To achieve the effect that isolation, this layer accounts for the 20% of calcium titanium ore bed overall thickness.
It is layered insertion by the SWCNT to perovskite solar battery calcium titanium ore bed, carrier mobility is improved, can make
Final photoelectric conversion improved efficiency about 2%.
Detailed description of the invention
Fig. 1 is perovskite solar battery hierarchical diagram of the present invention: (1) ito glass (2) electron transfer layer (3) SWCNT
Embedded type calcium titanium ore bed (4) is without SWCNT embedded type calcium titanium ore bed (5) hole transmission layer (6) metal electrode.
The insertion that Fig. 2 is calcium titanium ore bed SWCNT of the present invention runs through crystal boundary schematic diagram: (1) crystal boundary between crystal grain (2) is
SWCNT。
Specific embodiment
Below in conjunction with attached drawing, the present invention is done and is relatively described in detail.But the present invention is not limited in following embodiment.
Because the present invention lays particular emphasis on the innovation of perovskite solar battery calcium titanium ore bed structure to reach increase carrier mobility
The purpose of rate, therefore specific experiment drug proportion, condition are controlled, it can be depending on each researcher's specific experiment situation.
(1) cleaning of ito glass.Deionized water, toluene, acetone, ethyl alcohol, deionized water, each ultrasound 15min are successively used,
Then it is dried up with nitrogen gun, is put into culture dish.
(2) by ito glass with ultraviolet processing 20min, to increase its hydrophily.
(3) preparation of electron transfer layer.With configured 2.67% SnO22000 turns of aqueous solution/min, 30s, 150 DEG C
Anneal 30min, prepared electron transfer layer, about 30nm.
(4) preparation of layered perovskites.Using two-step method, two parts of 1.3mol/L, PbI are respectively configured2Solution, portion incorporation
(length of carbon nanotube is 300-600nm to SWCNT, to ultimately form calcium titanium ore bed embedded quantity as 3 × 1012―5×1012Root/
cm3SWCNT calcium titanium ore bed is advisable, a without incorporation SWCNT.Sol evenning machine is dynamically to drip glue, and first 500 turns at a slow speed/min, 20s, after
1500 turns/min, the mode of 30s successively spin coating PbI2(required dripping quantity can be controlled according to the lift height of required preparation), 70 DEG C
Anneal 30min, cooling.It is then spin coated onto the mixed solution (can according to each experimental group respectively situation) of FAI, MABr, MACl, 150 DEG C
Anneal 20min, completes the preparation of calcium titanium ore bed.The method that double source hot evaporation can also be used herein is accurate to control perovskite film layer
Thickness.Final about 650 nanometers of overall thickness of calcium titanium ore bed.(moon 80% with a thickness of overall thickness of doped layer, the thickness of undoped layer
Degree is the moon 20% of overall thickness)
(5) preparation of hole transmission layer.Configured sprio is subjected to spin coating, 3000 turns/min, 30s, about 80nm.
(6) prepared by metal electrode.Using metal hot evaporation, Au electrode, about 50nm are prepared.Complete preparation.
By adopting the above technical scheme relative to single calcium titanium ore bed and undoped with SWCNT perovskite solar battery,
Final incident photon-to-electron conversion efficiency can about promote 2%.
Finally, it is stated that the present invention focuses on the innovation of structure, above embodiments are only to illustrate technology of the invention
Scheme rather than limit, those skilled in the art should understand that, can modify to innovation scheme of the invention or
Equivalent replacement should all cover without departing from the objective and range of innovation scheme of the present invention in scope of the presently claimed invention
In the middle.
Claims (7)
1. a kind of perovskite solar battery light-absorption layer layered structure, which is characterized in that in electron transfer layer and hole transmission layer
Intermediate calcium titanium ore bed is divided into two layers, and the calcium titanium ore bed close to electron transfer layer is the calcium titanium of one-dimensional electric material embedded type structure
Ore bed is the calcium titanium ore bed for being not embedded into type structure between carbon nanotube embedded type calcium titanium ore bed and hole transmission layer, is not embedded into
The conventional calcium titanium ore bed of type is relative to carbon nanotube embedded type calcium titanium ore bed thinner thickness.
2. a kind of perovskite solar battery light-absorption layer layered structure described in accordance with the claim 1, which is characterized in that one-dimensional to lead
The calcium titanium ore bed of electric material embedded type structure, which is that the insertion of one-dimensional electric material is evenly dispersed, to be embedded into calcium titanium ore bed；It is not embedded into type
Conventional calcium titanium ore bed be be not embedded in calcium titanium ore bed for the calcium titanium ore bed of one-dimensional electric material embedded type structure
One-dimensional electric material.
3. a kind of perovskite solar battery light-absorption layer layered structure described in accordance with the claim 1, which is characterized in that one-dimensional to lead
Electric material diameter is less than the calcium titanium ore bed thickness of one-dimensional electric material embedded type structure, in order to avoid influence the crystallization of calcium titanium ore bed.
4. a kind of perovskite solar battery light-absorption layer layered structure described in accordance with the claim 1, which is characterized in that one-dimensional to lead
Electric material is selected from single-walled carbon nanotube.
5. a kind of perovskite solar battery light-absorption layer layered structure according to claim 4, which is characterized in that single wall carbon
The length of nanotube is 300-600nm, and the density of insertion is 1 × 105―1×1010Root/cm3。
6. a kind of perovskite solar battery light-absorption layer layered structure described in accordance with the claim 1, which is characterized in that one-dimensional to lead
The calcium titanium ore bed thickness of electric material embedded type structure accounts for the 80% of calcium titanium ore bed overall thickness.
7. a kind of perovskite solar battery light-absorption layer layered structure described in accordance with the claim 1, which is characterized in that one-dimensional material
Expect that diameter is less than or equal to 10nm, calcium titanium ore bed overall thickness is 650nm.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014056903A (en) * | 2012-09-12 | 2014-03-27 | Peccell Technologies Inc | Photoelectric conversion element using perovskite compound and method of manufacturing the same |
| CN206040711U (en) * | 2016-09-21 | 2017-03-22 | 深圳市先进清洁电力技术研究有限公司 | Solar cell |
| CN107706308A (en) * | 2017-08-31 | 2018-02-16 | 四川省新材料研究中心 | A kind of perovskite solar cell and preparation method |
| CN208873769U (en) * | 2018-10-25 | 2019-05-17 | 北京工业大学 | A kind of perovskite solar battery light-absorption layer layered structure |
| US20190304705A1 (en) * | 2016-06-07 | 2019-10-03 | King Abdullah University Of Science And Technology | Composite perovskite materials, methods of making, and methods of use |
-
2018
- 2018-10-25 CN CN201811250984.3A patent/CN109346607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014056903A (en) * | 2012-09-12 | 2014-03-27 | Peccell Technologies Inc | Photoelectric conversion element using perovskite compound and method of manufacturing the same |
| US20190304705A1 (en) * | 2016-06-07 | 2019-10-03 | King Abdullah University Of Science And Technology | Composite perovskite materials, methods of making, and methods of use |
| CN206040711U (en) * | 2016-09-21 | 2017-03-22 | 深圳市先进清洁电力技术研究有限公司 | Solar cell |
| CN107706308A (en) * | 2017-08-31 | 2018-02-16 | 四川省新材料研究中心 | A kind of perovskite solar cell and preparation method |
| CN208873769U (en) * | 2018-10-25 | 2019-05-17 | 北京工业大学 | A kind of perovskite solar battery light-absorption layer layered structure |
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