CN109888105A - A kind of new passivation perovskite solar cell and preparation method thereof - Google Patents
A kind of new passivation perovskite solar cell and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of new passivation perovskite solar cells and preparation method thereof.The perovskite solar cell optimizes perovskite absorption, so that including (phenyl-pentafluoride) borine of anti-solvent three in perovskite absorbed layer as a kind of new additive agent.On the one hand, the addition of fluorine ion can change the crystallinity and defect state of perovskite thin film, form the perovskite thin film with the high quality of big crystal grain size;Anti-solvent three (phenyl-pentafluoride) borine can be improved the surface topography of perovskite and have passivation in grain boundaries;On the other hand; fluorine ion can be such that the hydrophobicity of perovskite thin film improves, and the phase transformation of perovskite can be inhibited so as to preferably protect perovskite is not further increased the air stability of battery by water destruct and photostability obtains efficient perovskite solar cell.
Description
[technical field]
The invention belongs to thin film solar fields, and in particular to a kind of new passivation perovskite solar cell and its preparation side
Method.
[background technique]
As human social development is to the increasingly reduction growing day by day and traditional fossil energy of energy demand and environment
Pollution is found a kind of reproducible new energy to replace traditional fossil energy be the following very big challenge faced, therefore is had
The solar battery of the advantages that renewable and cleanliness without any pollution is increasingly valued by people.Solar energy is as a kind of renewable
The energy is to meet one of the important method of energy demand growing in global range.Convert the solar into the one of electric energy
Kind effective ways are to prepare the solar cell based on photovoltaic effect, and the novel solar cell for researching and developing high efficiency, low cost is to realize
The technical foundation of solar energy power generating application.
FAxMA(1-x)PbX3The solar cell of (X represents halogen) material causes photovoltaic research field in recent years
Very big concern.According to reports, the efficiency of perovskite solar cell is continuously improved, from the efficiency of perovskite solar cell in 2009
3.8% to 2017 years authentication efficiencies 22.7%, then the efficiency 23.7% of newest certification is arrived, peak efficiency is prominent in these efficiency
Broken is all carbonamidine based perovskite solar cell, but the perovskite solar cell of this composition is in conditions such as light, oxygen, heat, water
Stability inferior is poor.
[summary of the invention]
It is an object of the invention to overcome the above-mentioned prior art, a kind of new passivation perovskite solar cell is provided
And preparation method thereof;This method, can be with by being introduced into perovskite solar cell using three (phenyl-pentafluoride) borines as additive
Effectively improve perovskite thin film quality, inhibit film decomposition and phase transformation so improve perovskite solar battery efficiency and
Stability.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of preparation method of new passivation perovskite solar cell, comprising the following steps:
Step 1, electro-conductive glass is cleaned, Conducting Glass is prepared;
Step 2, electron transfer layer is prepared in Conducting Glass;
Step 3, perovskite absorbed layer, the calcium titanium are prepared by spin coating perovskite precursor solution on the electron transport layer
Mine precursor solution is the FA that concentration is 0.8~1.4M0.85MA0.15PbI3, wherein FA is NH2CHNH2 +, MA CH3NH3 +;Spin coating
Terminate after annealing and perovskite absorbed layer is made;
Step 4, hole transmission layer is prepared on perovskite absorbed layer;
Step 5, metal electrode is prepared on the hole transport layer.
A further improvement of the present invention is that:
Preferably, in step 3, spin coating perovskite precursor solution prepares the rotation of perovskite absorbed layer on the electron transport layer
Painting process is divided into two stages: first stage, with 500~1500rpm/s of revolving speed spin coating perovskite forerunner on the electron transport layer
Liquid solution, spin-coating time are 5~20s;Second stage, with 2000~5000rpm/s of revolving speed spin coating calcium titanium on the electron transport layer
Three (phenyl-pentafluoride) Borane solutions of 100~300uL, second-order are added dropwise in 10~20s of spin coating for mine precursor solution, second stage
The spin-coating time of section amounts to 30~50s.
Preferably, in step 3, the preparation process of perovskite precursor solution are as follows: weigh first according to molar ratio 0.85:0.15
Amidino groups iodine powder and methylamino iodine powder form mixture A after mixing, according still further to molar ratio 1:1 by mixture A and iodate
Lead mixing, is made mixture B, the mixed solution of dimethylformamide and dimethyl sulfoxide is added in mixture B as solvent,
It stirs at room temperature and perovskite precursor solution, mixing time > 6h is made;The mixed solution of dimethylformamide and dimethyl sulfoxide
The volume ratio of middle dimethylformamide and dimethyl sulfoxide is (4~8): 1.
Preferably, in step 3, the preparation process of three (phenyl-pentafluoride) Borane solutions is to add in three (phenyl-pentafluoride) borine powder
Enter chlorobenzene solvent and be stirred at room temperature, it is molten that three (phenyl-pentafluoride) borines that concentration is 0.625~5mg/mL are made in mixing time > 6h
Liquid.
Preferably, in step 3, the annealing temperature after spin coating is 100~200 DEG C, and annealing time is 5~30min.
Preferably, in step 1, by electro-conductive glass, successively ultrasound is each in acetone, isopropanol and ethyl alcohol cleans 5~30min,
It is dried with nitrogen the Conducting Glass after being cleaned, the electro-conductive glass is that indium tin oxide-coated glass or fluorine-doped tin oxide are led
Electric glass.
Preferably, in step 2, electron transfer layer, depositing temperature are prepared by hydrothermal deposition method in Conducting Glass
It is 70 DEG C, the material of electron transfer layer is TiO2。
Preferably, in step 4, Spiro-OMeTAD hole transmission layer is prepared on perovskite absorbed layer by spin-coating method,
Spin coating revolving speed is 1000~2000rpm/s, and spin-coating time is 40~60s.
Preferably, in step 5, metal electrode is prepared by vapour deposition method on the hole transport layer, metal electrode with a thickness of
80~100nm, metal electrode are gold electrode.
A kind of new passivation perovskite solar cell as made from any of the above-described preparation method, the new passivation calcium
Titanium ore solar cell from top to bottom successively include Conducting Glass, electron transfer layer, perovskite absorbed layer, hole transmission layer and
Metal electrode, the perovskite absorbed layer are the FA doped with three (phenyl-pentafluoride) borines0.85MA0.15PbI3, wherein FA be
NH2CHNH2 +, MA CH3NH3 +。
Compared with prior art, the invention has the following advantages:
The invention discloses a kind of new passivation perovskite solar cells.It is opposite with existing solar cell, the perovskite
Light absorption of the solar cell in visible-range is remarkably reinforced, and can produce more photo-generated carriers, and calcium titanium in this way
Ore bed reduces the defect of film, and the non-radiative recombination of such battery is just reduced, so that the electric current of battery is close
Degree increases.The perovskite solar cell optimizes perovskite absorbed layer, so that including anti-solvent three (five in perovskite absorbed layer
Fluorobenzene) borine is as a kind of new additive agent.On the one hand, the addition of fluorine ion can change the crystallinity of perovskite thin film and lack
State is fallen into, the perovskite thin film with the high quality of big crystal grain size is formed, anti-solvent three (phenyl-pentafluoride) borine can be improved calcium titanium
The surface topography of mine and there is passivation in grain boundaries;On the other hand, fluorine ion can be such that the hydrophobicity of perovskite thin film mentions
Height, and the phase transformation of perovskite can be inhibited so as to preferably protect perovskite not further increased the sky of battery by water destruct
Gas stability and photostability obtain efficient perovskite solar cell;By three (phenyl-pentafluoride) borines in perovskite absorbed layer
Quality, effective decomposition for inhibiting film and the phase transformation of perovskite thin film can be effectively improved as additive and then improve perovskite
The efficiency and stability of solar battery;There is important practical value and directive significance to the industrialization of perovskite battery.
The invention also discloses a kind of preparation method of new passivation perovskite solar cell, which is passing through rotation
During coating prepares perovskite absorbed layer, the anti-solvent prepared is added dropwise, so that in the absorbed layer in perovskite thin film
Increase by three (phenyl-pentafluoride) borines as additive, and then the perovskite being passivated is made and absorbs layer film, passes through strict control three
The time for adding and dripping quantity of (phenyl-pentafluoride) Borane solution increase by three (five while guaranteeing principal component in perovskite absorbed layer
Fluorobenzene) borine passivation;This method is easy to operate, favorable repeatability, easily preparation.
[Detailed description of the invention]
Fig. 1 is the structural representation of the perovskite solar cell with three (phenyl-pentafluoride) borine additives prepared by the present invention
Figure;
Wherein: 1 is transparent conducting glass;2 be electron transfer layer;3 be the calcium titanium containing three (phenyl-pentafluoride) borine additives
Mine absorbed layer;4 be hole transmission layer;5 be metal electrode.
Fig. 2 is to add the perovskite battery of three (phenyl-pentafluoride) borines in the embodiment of the present invention 1 and be not added with three (five fluorine
Benzene) borine perovskite solar cell performance comparison figure;
Fig. 3 is that the perovskite battery and traditional perovskite battery humidity in embodiment 1 containing three (phenyl-pentafluoride) borines are stablized
Property comparison diagram;
(a) figure and (b) figure in Fig. 4 are the surface topography maps of perovskite absorbed layer, are respectively not added with three (phenyl-pentafluorides)
The SEM figure of the film of three (phenyl-pentafluoride) borines of borine and addition;
Wherein, (a) figure is to be not added with three (phenyl-pentafluoride) borines;(b) figure is three (phenyl-pentafluoride) borines of addition.
[specific embodiment]
The invention will be described in further detail in the following with reference to the drawings and specific embodiments, and the invention discloses a kind of novel
It is passivated perovskite solar cell and preparation method thereof, perovskite solar cell successively includes: transparent conducting glass lining from bottom to up
Bottom 1, electron transfer layer 2, perovskite absorbed layer 3, hole transmission layer 4 and the metal electrode for containing three (phenyl-pentafluoride) borine additives
5, wherein for added with three (phenyl-pentafluoride) borine additives in the perovskite absorbed layer 3 containing three (phenyl-pentafluoride) borine additives
Perovskite absorbed layer;The preparation process of the perovskite solar cell the following steps are included:
Step 1, Conducting Glass is cleaned
Electro-conductive glass is successively respectively cleaned by ultrasonic 5~30min in acetone, isopropanol and ethyl alcohol, is dried with nitrogen to obtain clear
Conducting Glass after washing;Electro-conductive glass is tin indium oxide (ITO) electro-conductive glass or fluorine-doped tin oxide (FTO) electro-conductive glass.
Step 2, electron transfer layer is prepared in Conducting Glass after cleaning
By hydrothermal deposition method, electron transfer layer is prepared in Conducting Glass, depositing temperature is 70 DEG C, electron-transport
The material selection TiO of layer2。
Step 3, anti-solvent solution is prepared
Chlorobenzene solvent is added in three (phenyl-pentafluoride) borine powder and 6h or more is stirred at room temperature on mixing platform, obtains concentration
It is spare for three (phenyl-pentafluoride) Borane solutions of 0.625~5mg/mL, as anti-solvent solution.
Step 4, perovskite precursor solution is prepared
Carbonamidine base iodine (NH is weighed according to molar ratio 0.85:0.152CHNH2) and methylamino iodine (CH I3NH3I) powder, mixing
Mixture A is formed afterwards, according still further to molar ratio 1:1 by mixture A and lead iodide (PbI2) mixture B is made after mixing, add
Entering volume ratio is (4~8): the mixed solution of 1 dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) as solvent, and
6h or more is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is the perovskite presoma of 0.8~1.4M
Solution.
Step 5, on the electron transport layer spin coating perovskite precursor solution when, spin-coating method is divided into two stages: the first rank
Section revolving speed is 500~1500rpm/s, and spin-coating time is 5~20s;Second stage revolving speed is 2000~5000rpm/s, when spin coating
Between be 30~50s, second stage is added dropwise in 10~20s of spin coating prepared in 100~300uL step 2 contain three (five fluorine
Benzene) borine chlorobenzene solution;The processing of spin coating after annealing, annealing temperature are 100~200 DEG C, and annealing time is 5~30min, are made
Perovskite absorbed layer.
Step 6, hole transmission layer is prepared, hole transmission layer is prepared on perovskite absorbed layer by spin-coating method, hole passes
The material of defeated layer is Spiro-OMeTAD, and wherein spin coating revolving speed is 1000~2000rpm/s, and spin-coating time is 40~60s.
Step 7, the gold electrode that finally evaporation thickness is 80~100nm on the hole transport layer obtains perovskite sun electricity
Pond;
Comparative example
Step 1, by the FTO Conducting Glass cut out, successively ultrasound is each in acetone, isopropanol and ethyl alcohol cleans 5min,
It is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2DMF the and DMSO solvent that volume ratio is 6:1 is added in mixing, and in mixing platform
On 7h is stirred at room temperature, obtained group is divided into FA0.85MA0.15PbI3, concentration is the perovskite precursor solution of 1.2M.
Step 4, by solution spin-coating method, spin coating perovskite absorbed layer, spin-coating method are divided into two stages in electronic shell:
One stage revolving speed is 1000rpm/s, spin-coating time 10s;Second stage revolving speed is 4000rpm/s, spin-coating time 40s;Rotation
After annealing processing is applied, annealing temperature is 150 DEG C, annealing time 15min, and perovskite absorbed layer is made.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 1500rpm/s, spin-coating time 50s.
Step 7, the golden film of 80nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2, obtain
To perovskite solar cell.
Embodiment 1
Step 1, by the FTO Conducting Glass cut out, successively ultrasound is each in acetone, isopropanol and ethyl alcohol cleans 5min,
It is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, three (phenyl-pentafluoride) borine powder are weighed, chlorobenzene solvent is added, is made into three (phenyl-pentafluoride) Borane solutions, it is dense
Degree is 1.25mg/mL, and 7h is stirred on mixing platform, obtains three (phenyl-pentafluoride) Borane solutions;
Step 4, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2Mixing, it is DMF the and DMSO mixed solution of 6:1 as molten that volume ratio, which is added,
Agent, and 7h is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is that the perovskite presoma of 1.2M is molten
Liquid.
Step 5, by solution spin-coating method, spin coating perovskite absorbed layer, first stage revolving speed are 1000rpm/ in electronic shell
S, spin-coating time 10s;Second stage revolving speed is 4000rpm/s, spin-coating time 40s, and second stage is added dropwise in 15s
The ready chlorobenzene solution containing three (phenyl-pentafluoride) borines in 200uL step 2;The processing of spin coating after annealing, annealing temperature 150
DEG C, perovskite absorbed layer is made in annealing time 15min.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 1500rpm/s, spin-coating time 50s.
Step 7, the golden film of 80nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2, obtain
To perovskite solar cell.
By the perovskite solar cell containing three (phenyl-pentafluoride) borine additives prepared in this example, such as Fig. 1 institute
Show comprising stack gradually Conducting Glass 1, the electron transfer layer 2, the calcium for containing three (phenyl-pentafluoride) borine additives of assembling
Titanium ore absorbed layer 3, hole transmission layer 4 and gold electrode 5;From figure 2 it can be seen that by the calcium titanium ore bed of spin coating in 150 DEG C of thermal station
Upper heating 30min, tests the efficiency of the solar battery of solar battery manufactured in the present embodiment and comparative example, can be with from figure
Find out, the efficiency of the solar battery in comparative example is 19.55%, the solar battery efficiency (PCE) prepared in the present embodiment
It is 21.60%, compares contrast sample, efficiency improves 10.5%;The pressure of opening of solar cell in comparative example is 1.09V, and this
The solar battery prepared in embodiment opens pressure (Voc) it is 1.12V, contrast sample is compared, pressure is opened and improves 2.75%;Comparative example
In solar cell current density be 24.02mA/cm2, and the solar battery current density (J prepared in the present embodimentsc)
For 24.69mA/cm2, contrast sample is compared, current density improves 2.79%;The fill factor of solar cell in comparative example
It is 74.91%, and the solar battery fill factor (FF) prepared in the present embodiment is 78.22%, compares contrast sample, filling
The factor improves 4.42%;From figure 3, it can be seen that the performance of perovskite solar battery significantly improves.In air humidity
40%, after placing 720h in the case that above-mentioned battery is unencapsulated, efficiency may remain in the 75% of original efficiency.However without three
Traditional perovskite battery of (phenyl-pentafluoride) borine additive battery efficiency in the case where air humidity 40%, this battery are unencapsulated
It is reduced to the 55% of original efficiency.Figure 4, it is seen that being added to three (five fluorine relative to perovskite battery made from comparative example
Benzene) bright spot after borine on perovskite surface disappears (not occurring δ phase), and the hydrophobic performance of film significantly improves.
Embodiment 2
Step 1, successively each cleaning of ultrasound in acetone, isopropanol and ethyl alcohol by the ITO Conducting Glass cut out
10min is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, three (phenyl-pentafluoride) borine powder are weighed, chlorobenzene solvent is added, is made into three (phenyl-pentafluoride) Borane solutions, it is dense
Degree is 0.625mg/mL, and 8h is stirred on mixing platform, obtains three (phenyl-pentafluoride) Borane solutions;
Step 4, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2Mixing, it is DMF the and DMSO mixed solution of 8:1 as molten that volume ratio, which is added,
Agent, and 8h is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is that the perovskite presoma of 1.1M is molten
Liquid.
Step 5, by solution spin-coating method, spin coating perovskite absorbed layer, first stage revolving speed are 1500rpm/ in electronic shell
S, spin-coating time 5s;Second stage revolving speed is 5000rpm/s, spin-coating time 30s, and 300uL is added dropwise in 20s in second stage
The ready chlorobenzene solution containing three (phenyl-pentafluoride) borines in step 2;The processing of spin coating after annealing, annealing temperature are 200 DEG C, are moved back
The fiery time is 5min, and perovskite absorbed layer is made.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 2000rpm/s, spin-coating time 40s.
Step 7, the golden film of 100nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2,
Obtain perovskite solar cell.
Embodiment 3
Step 1, successively each cleaning of ultrasound in acetone, isopropanol and ethyl alcohol by the FTO Conducting Glass cut out
15min is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, three (phenyl-pentafluoride) borine powder are weighed, chlorobenzene solvent is added, is made into three (phenyl-pentafluoride) Borane solutions, it is dense
Degree is 1.875mg/mL, and 8h is stirred on mixing platform, obtains three (phenyl-pentafluoride) Borane solutions;
Step 4, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2Mixing, it is DMF the and DMSO mixed solution of 4:1 as molten that volume ratio, which is added,
Agent, and 8h is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is that the perovskite presoma of 0.8M is molten
Liquid.
Step 5, by solution spin-coating method, spin coating perovskite absorbed layer, first stage revolving speed are 600rpm/ in electronic shell
S, spin-coating time 15s;Second stage revolving speed is 3000rpm/s, spin-coating time 35s, and second stage is added dropwise in 18s
The ready chlorobenzene solution containing three (phenyl-pentafluoride) borines in 120uL step 2;The processing of spin coating after annealing, annealing temperature 100
DEG C, perovskite absorbed layer is made in annealing time 30min.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 1800rpm/s, spin-coating time 40s.
Step 7, the golden film of 80nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2, obtain
To perovskite solar cell.
Embodiment 4
Step 1, successively each cleaning of ultrasound in acetone, isopropanol and ethyl alcohol by the ITO Conducting Glass cut out
20min is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, three (phenyl-pentafluoride) borine powder are weighed, chlorobenzene solvent is added, is made into three (phenyl-pentafluoride) Borane solutions, it is dense
Degree is 2.5mg/mL, and 7h is stirred on mixing platform, obtains three (phenyl-pentafluoride) Borane solutions;
Step 4, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2Mixing, it is DMF the and DMSO mixed solution of 5:1 as molten that volume ratio, which is added,
Agent, and 7h is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is that the perovskite presoma of 1.4M is molten
Liquid.
Step 5, by solution spin-coating method, spin coating perovskite absorbed layer, first stage revolving speed are 1200rpm/ in electronic shell
S, spin-coating time 18s;Second stage revolving speed is 2500rpm/s, spin-coating time 45s, and second stage is added dropwise in 12s
The ready chlorobenzene solution containing three (phenyl-pentafluoride) borines in 250uL step 2;The processing of spin coating after annealing, annealing temperature 120
DEG C, perovskite absorbed layer is made in annealing time 20min.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 1200rpm/s, spin-coating time 45s.
Step 7, the golden film of 80nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2, obtain
To perovskite solar cell.
Embodiment 5
Step 1, successively each cleaning of ultrasound in acetone, isopropanol and ethyl alcohol by the FTO Conducting Glass cut out
25min is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, three (phenyl-pentafluoride) borine powder are weighed, chlorobenzene solvent is added, is made into three (phenyl-pentafluoride) Borane solutions, it is dense
Degree is 5mg/mL, and 6h is stirred on mixing platform, obtains three (phenyl-pentafluoride) Borane solutions;
Step 4, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2Mixing, it is DMF the and DMSO mixed solution of 4:1 as molten that volume ratio, which is added,
Agent, and 6h is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is that the perovskite presoma of 1.2M is molten
Liquid.
Step 5, by solution spin-coating method, spin coating perovskite absorbed layer, first stage revolving speed are 800rpm/ in electronic shell
S, spin-coating time 8s;Second stage revolving speed is 3500rpm/s, spin-coating time 40s, and 180uL is added dropwise in 14s in second stage
The ready chlorobenzene solution containing three (phenyl-pentafluoride) borines in step 2;The processing of spin coating after annealing, annealing temperature are 160 DEG C, are moved back
The fiery time is 25min, and perovskite absorbed layer is made.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 1400rpm/s, spin-coating time 55s.
Step 7, the golden film of 90nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2, obtain
To perovskite solar cell.
Embodiment 6
Step 1, successively each cleaning of ultrasound in acetone, isopropanol and ethyl alcohol by the FTO Conducting Glass cut out
30min is dried with nitrogen the Conducting Glass after being cleaned;
Step 2, one layer of TiO is deposited on the surface FTO etched under the conditions of 70 DEG C using hydro-thermal heat preservation sedimentation2Do electricity
Sub- transmission material;
Step 3, three (phenyl-pentafluoride) borine powder are weighed, chlorobenzene solvent is added, is made into three (phenyl-pentafluoride) Borane solutions, it is dense
Degree is 1.25mg/mL, and 6h is stirred on mixing platform, obtains three (phenyl-pentafluoride) Borane solutions;
Step 4, NH is weighed according to molar ratio 0.85:0.152CHNH2I and CH3NH3I powder forms mixture A after mixing,
According still further to molar ratio 1:1 by mixture A and PbI2Mixing, it is DMF the and DMSO mixed solution of 7:1 as molten that volume ratio, which is added,
Agent, and 6h is stirred at room temperature on mixing platform, obtained group is divided into FA0.85MA0.15PbI3, concentration is that the perovskite presoma of 0.9M is molten
Liquid.
Step 5, by solution spin-coating method, spin coating perovskite absorbed layer, first stage revolving speed are 500rpm/ in electronic shell
S, spin-coating time 20s;Second stage revolving speed is 2000rpm/s, spin-coating time 50s, and second stage is added dropwise in 10s
The ready chlorobenzene solution containing three (phenyl-pentafluoride) borines in 100uL step 2;The processing of spin coating after annealing, annealing temperature 180
DEG C, perovskite absorbed layer is made in annealing time 10min.
Step 6, solution spin-coating method spin coating concentration on calcium titanium ore bed is used to make for the Spiro-OMeTAD solution of 90mg/mL
For hole transmission layer, spin speed 1000rpm/s, spin-coating time 60s.
Step 7, the golden film of 90nm thickness, cell area 0.09cm are deposited on hole transmission layer Spiro-OMeTAD2, obtain
To perovskite solar cell.
The performance test results of above-described embodiment are tabulated below, as can be seen from the table through the invention in method system
It is standby go out battery performance, battery, which opens pressure, current density, fill factor and battery efficiency and is superior to comparative example, does not add three (five
Fluorobenzene) boron solar battery.
The battery performance test result of 1 embodiment 1-5 of table
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of new passivation perovskite solar cell, which comprises the following steps:
Step 1, electro-conductive glass is cleaned, is prepared Conducting Glass (1);
Step 2, it is prepared on Conducting Glass (1) electron transfer layer (2);
Step 3, it is prepared perovskite absorbed layer (3) by spin coating perovskite precursor solution on the electron transport layer, the calcium titanium
Mine precursor solution is the FA that concentration is 0.8~1.4M0.85MA0.15PbI3, wherein FA is NH2CHNH2 +, MA CH3NH3 +;Spin coating
Terminate after annealing and perovskite absorbed layer (3) are made;
Step 4, it is prepared on perovskite absorbed layer (3) hole transmission layer (4);
Step 5, it is prepared on hole transmission layer (4) metal electrode (5).
2. a kind of preparation method of new passivation perovskite solar cell according to claim 1, which is characterized in that step
In 3, the spin coating process that spin coating perovskite precursor solution prepares perovskite absorbed layer (3) on electron transfer layer (2) is divided into two
A stage: the first stage, with 500~1500rpm/s of revolving speed spin coating perovskite precursor solution on the electron transport layer, when spin coating
Between be 5~20s;Second stage, with 2000~5000rpm/s of revolving speed spin coating perovskite precursor solution on the electron transport layer,
Three (phenyl-pentafluoride) Borane solutions of 100~300uL, the spin-coating time of second stage are added dropwise in 10~20s of spin coating for second stage
Total 30~50s.
3. a kind of preparation method of new passivation perovskite solar cell according to claim 2, which is characterized in that step
In 3, the preparation process of perovskite precursor solution are as follows: weigh carbonamidine base iodine powder and methylamino according to molar ratio 0.85:0.15
Iodine powder forms mixture A after mixing, mixes mixture A with lead iodide according still further to molar ratio 1:1, and mixture is made
B is added the mixed solution of dimethylformamide and dimethyl sulfoxide as solvent in mixture B, obtained calcium is stirred at room temperature
Titanium ore precursor solution, mixing time > 6h;In the mixed solution of dimethylformamide and dimethyl sulfoxide dimethylformamide and
The volume ratio of dimethyl sulfoxide is (4~8): 1.
4. a kind of preparation method of new passivation perovskite solar cell according to claim 2, which is characterized in that step
In 3, the preparation process of three (phenyl-pentafluoride) Borane solutions is chlorobenzene solvent to be added in three (phenyl-pentafluoride) borine powder and in room temperature
Three (phenyl-pentafluoride) Borane solutions that concentration is 0.625~5mg/mL are made in stirring, mixing time > 6h.
5. a kind of preparation method of new passivation perovskite solar cell according to claim 2, which is characterized in that step
In 3, the annealing temperature after spin coating is 100~200 DEG C, and annealing time is 5~30min.
6. a kind of preparation method of new passivation perovskite solar cell according to claim 1, which is characterized in that step
In 1, by electro-conductive glass, successively ultrasound is each in acetone, isopropanol and ethyl alcohol cleans 5~30min, is dried with nitrogen after obtaining cleaning
Conducting Glass (1), the electro-conductive glass be indium tin oxide-coated glass or fluorine-doped tin oxide electro-conductive glass.
7. a kind of preparation method of new passivation perovskite solar cell according to claim 1, which is characterized in that step
It in 2, is prepared electron transfer layer (2) on Conducting Glass (1) by hydrothermal deposition method, depositing temperature is 70 DEG C, and electronics passes
The material of defeated layer (2) is TiO2。
8. a kind of preparation method of new passivation perovskite solar cell according to claim 1, which is characterized in that step
In 4, Spiro-OMeTAD hole transmission layer is prepared on perovskite absorbed layer (3) by spin-coating method, spin coating revolving speed is 1000~
2000rpm/s, spin-coating time are 40~60s.
9. a kind of preparation method of new passivation perovskite solar cell according to claim 1, which is characterized in that step
In 5, prepared metal electrode (5) on hole transmission layer (4) by vapour deposition method, metal electrode with a thickness of 80~100nm, metal
Electrode is gold electrode.
10. a kind of new passivation perovskite solar cell as made from any one of claim 1-9 preparation method, feature exist
In the new passivation perovskite solar cell successively includes Conducting Glass (1), electron transfer layer (2), calcium from top to bottom
Titanium ore absorbed layer (3), hole transmission layer (4) and metal electrode (5), the perovskite absorbed layer (3) are doped with three (five fluorine
Benzene) borine FA0.85MA0.15PbI3, wherein FA is NH2CHNH2 +, MA CH3NH3 +。
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