CN103413892B - Alloy quantum dot PbSx Se 1-x, preparation method thereof and application thereof in solar cell - Google Patents
Alloy quantum dot PbSx Se 1-x, preparation method thereof and application thereof in solar cell Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 27
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims description 15
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 239000002159 nanocrystal Substances 0.000 claims abstract description 14
- 238000004528 spin coating Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 26
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical group [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 20
- 241000795633 Olea <sea slug> Species 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- -1 octadecylene Chemical group 0.000 claims description 16
- 239000000376 reactant Substances 0.000 claims description 15
- 229920000144 PEDOT:PSS Polymers 0.000 claims description 13
- 238000010030 laminating Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 229920000620 organic polymer Polymers 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 10
- 239000012467 final product Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 8
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 8
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 8
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000005642 Oleic acid Substances 0.000 claims description 8
- 238000005119 centrifugation Methods 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 8
- 229910000464 lead oxide Inorganic materials 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 8
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 230000027756 respiratory electron transport chain Effects 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
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- 238000004140 cleaning Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- YBNMDCCMCLUHBL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-pyren-1-ylbutanoate Chemical compound C=1C=C(C2=C34)C=CC3=CC=CC4=CC=C2C=1CCCC(=O)ON1C(=O)CCC1=O YBNMDCCMCLUHBL-UHFFFAOYSA-N 0.000 abstract description 6
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- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 241000549556 Nanos Species 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The invention discloses an alloy quantum dot PbSxSe1‑xMolecular formula of PbSxSe1‑xWherein x ranges from 0<x<1; the band gap range is 1.0-1.6 electron volts; the size is 2-4 nanometers. The invention provides a PbSxSe1‑xThe energy level adjusting range of the alloy quantum dots just covers the ideal energy level range of the solar cell. Meanwhile, high photoelectric conversion efficiency is obtained in a polymer/nanocrystal hybrid solar cell system; the performance of the solar cell is superior to that of binary PbS and PbSe in a pure quantum dot solar cell and a dye-sensitized solar cell. Meanwhile, the hybrid layer can generate longitudinal phase separation in the spin coating process, and then a pure nanocrystalline layer PbS is spin-coatedxSe1‑xA donor- (donor: acceptor) -acceptor device structure similar to a p-i-n junction can be obtained, which is very advantageous for exciton separation and transport.
Description
Technical field
The present invention relates to photoelectric field, be specifically related to a kind of alloy quantum dot.
Background technology
Vulcanized lead (PbS) and the lead selenide (PbSe) of IV-IV race have the biggest Bohr radius, and this makes their quantum
Confinement effect is particularly significant, is regulated by size, and its absorption spectrum and the solar spectral arriving earth surface can be made fine
Must mate, there is the character such as absorptance is big, electron mobility is high, energy level is adjustable simultaneously so that IV-IV race's quantum dot becomes existing
The photovoltaic nano material that stage research is the most popular, is expected to build the solaode of a new generation's low-cost high-efficiency.
Sargent, Edward H et al. in the photoelectric respone of first observed in 2005 to PbS quantum, hereafter their class
The systematic research to PbS solar battery pas of topic group, through less than ten years, brings up to photoelectric transformation efficiency
7%.Quickly increasing of this type of battery efficiency shows IV-IV race's nano material great potential in terms of photovoltaic application.
The hybrid solar electricity of P3HT/CdSe nanometer rods from Paul Alivisatos seminar reported first in 2002
Since pond, organic polymer/nano-crystal hybrid solar cell has just obtained the very big concern of people.This type of battery combines poly-
Flexible and the nanocrystalline specific absorbance advantages of higher of compound, is very beneficial for the system of the flexible low-cost solar battery of a new generation
Standby.P. N. Prasad in 2011 et al. uses the polymer (PDTPBT) of a kind of high HOMO and PbS quantum to carry out hydridization, will
The efficiency of this type of hybrid solar cell has brought up to 3.78%.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to provide a kind of alloy quantum dot PbSxSe1-x, poly-
Compound/nano-crystal hybrid solar cell system obtains high photoelectric transformation efficiency.
It is a further object of the present invention to provide alloy quantum dot PbSxSe1-xPreparation method and it is at solaode
In application.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that:
A kind of alloy quantum dot PbSxSe1-x, it is characterised in that: molecular formula is PbSxSe1-x, wherein x scope is 0 < x < 1；Its
Bandgap range 1.0-1.6 electron-volt；Size 2-4 nanometer.
A kind of preparation method of alloy quantum dot PbSxSe1-x, it is characterised in that: comprise the following steps:
1) preparation of plumbi oleas presoma: lead oxide, oleic acid and octadecylene are joined in the there-necked flask of 100 milliliters,
Stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain plumbi oleas presoma for 1 hour the most under nitrogen protection, stand-by；
2) it is adjusted to design temperature；By (TMS)2Se、(TMS)2After S and octadecylene mix homogeneously, it is rapidly injected with syringe
In above-mentioned plumbi oleas presoma, react the set time, to obtain final product；
3) room temperature is down in water-bath, injects anhydrous n-hexane.Reactant liquor is transferred in glove box, adds isopropanol to reaction
Liquid becomes cloudy, and discards upper liquid after machine is centrifugal by centrifugation；Again with n-hexane dissolution, centrifugal after adding acetone, discard upper liquid.Will
The product obtained is drained under vacuo, preserves alloy quantum dot PbS in glove boxxSe1-x。
Aforementioned design temperature is 30-200 DEG C；The aforementioned set time is 15 seconds-30 minutes.
Aforementioned (TMS)2Se and described (TMS)2The mol ratio of S is y, 0.1 < y < 10.
A kind of organic polymer/nano-crystal hybrid solar photovoltaic device, it is characterised in that: include glass, be attached to glass
Anode layer on glass, with the hole transmission layer of anode layer laminating, the pure polymer layer fitted with hole transmission layer, with straight polymer
The Polymer/nano crystalline substance hybrid layer that laminating closes, with the pure nano-crystalline layers of hybrid layer laminating, the electronics fitted with pure nano-crystalline layers passes
Defeated layer, with the cathode layer of electron transfer layer laminating, described polymer is PDTPBT, and described Polymer/nano crystalline substance hybrid layer is
PDTPBT and PbSxSe1-x, described pure nano-crystalline layers is PbSxSe1-x。
Aforesaid anode layer is ITO；Foregoing hole transport layer is PEDOT:PSS；Aforementioned electronic transport layer is lithium fluoride, aforementioned
Cathode layer is aluminum.
A kind of method preparing organic polymer/nano-crystal hybrid solar photovoltaic device, it is characterised in that: through clear
Spin coating PEDOT:PSS, PDTPBT and PbS successively on the anode layer washedxSe1-xMixed solution, PbSxSe1-xSolution, then steam successively
Plate 0.6 nano-lithium fluoride, 100 nano aluminum, to obtain final product.
The invention have benefit that: a kind of PbS that the present invention providesxSe1-xAlloy quantum dot, its energy level regulation model
Enclose the preferable energy level scope just covering solaode.Obtain in Polymer/nano crystalline substance hybrid solar cell system simultaneously
Obtained high photoelectric transformation efficiency；In pure quantum dot solar cell and DSSC, performance is superior to binary
PbS and PbSe.Hybrid layer can occur longitudinal being separated, then one layer of pure nano-crystalline layers of spin coating in spin coating process simultaneously
PbSxSe1-xIt is obtained with being similar to donor-(donor: the receptor)-receptor device architecture of p-i-n junction, is very beneficial for exciton
Separation and transmission.
Accompanying drawing explanation
Fig. 1 is the PbS of the present inventionxSe1-xThe part uv-visible absorption spectra figure of alloy quantum dot；
Fig. 2 is the PbS of the present invention0.4Se0.6The transmission electron microscope picture of alloy quantum dot；
Fig. 3 is the organic polymer/nano-crystal hybrid solar photovoltaic device structural representation of the present invention；
Fig. 4 is the organic polymer/nano-crystal hybrid solar photovoltaic device photovoltaic performance with composition transfer of the present invention
Variation diagram；
The implication of reference in figure: 1 glass, 2 anode layers, 3 hole transmission layers, 4 polymeric layers, 5 Polymer/nanos are brilliant
Hybrid layer, 6 pure nano-crystalline layers, 7 electron transfer layers, 8 cathode layers.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention made concrete introduction.
Comparative example 1
The synthesis of PbSe quantum dot:
1) preparation of plumbi oleas presoma: 223 milligrams of lead oxide, 0.7 gram of oleic acid and 20 grams of octadecylenes are joined 100 millis
In the there-necked flask risen, stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain oil in 1 hour the most under nitrogen protection
Lead plumbate presoma, stand-by；
2) design temperature 80 DEG C it is adjusted to；By (TMS) of 125 microlitres2Se is dissolved into mix homogeneously in 5 milliliters of octadecylenes, uses
Syringe is rapidly injected in above-mentioned plumbi oleas presoma, reacts 10 minutes set times, to obtain final product；
3) room temperature is down in water-bath, injects 8 milliliters of anhydrous n-hexanes.Reactant liquor is transferred in glove box, adds isopropanol
Become cloudy to reactant liquor, by centrifugation machine rotating speed 8000 revs/min, after centrifugal 5 minutes, discard upper liquid；Again with n-hexane dissolution,
It is centrifuged after adding acetone, discards upper liquid.The product obtained is drained under vacuo, glove box preserves.
Comparative example 2
The synthesis of PbS quantum:
1) preparation of plumbi oleas presoma: 223 milligrams of lead oxide, 0.7 gram of oleic acid and 20 grams of octadecylenes are joined 100 millis
In the there-necked flask risen, stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain oil in 1 hour the most under nitrogen protection
Lead plumbate presoma, stand-by；
2) design temperature 120 DEG C it is adjusted to；By (TMS) of 105 microlitres2S is dissolved into mix homogeneously in 5 milliliters of octadecylenes, uses
Syringe is rapidly injected in above-mentioned plumbi oleas presoma, reacts 2 minutes set times, to obtain final product；
3) room temperature is down in water-bath, injects 8 milliliters of anhydrous n-hexanes.Reactant liquor is transferred in glove box, adds isopropanol
Become cloudy to reactant liquor, by centrifugation machine rotating speed 8000 revs/min, after centrifugal 5 minutes, discard upper liquid；Again with n-hexane dissolution,
It is centrifuged after adding acetone, discards upper liquid.The product obtained is drained under vacuo, glove box preserves.
Embodiment 1
PbS0.2Se0.8The synthesis of alloy quantum dot:
1) preparation of plumbi oleas presoma: 223 milligrams of lead oxide, 0.7 gram of oleic acid and 20 grams of octadecylenes are joined 100 millis
In the there-necked flask risen, stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain oil in 1 hour the most under nitrogen protection
Lead plumbate presoma, stand-by；
2) design temperature 30 DEG C it is adjusted to；By 100 microlitres (TMS)2Se, 21 microlitres (TMS)2S and 5 milliliters of octadecylene mixing are all
After even, it is rapidly injected in above-mentioned plumbi oleas presoma with syringe, reacts 30 minutes set times, to obtain final product；
3) room temperature is down in water-bath, injects 8 milliliters of anhydrous n-hexanes.Reactant liquor is transferred in glove box, adds isopropanol
Become cloudy to reactant liquor, by centrifugation machine rotating speed 8000 revs/min, after centrifugal 5 minutes, discard upper liquid；Again with n-hexane dissolution,
It is centrifuged after adding acetone, discards upper liquid.The product obtained is drained under vacuo, glove box preserves PbS0.2Se0.8Alloy
Quantum dot.
Embodiment 2
PbS0.4Se0.6The synthesis of alloy quantum dot:
1) preparation of plumbi oleas presoma: 223 milligrams of lead oxide, 0.7 gram of oleic acid and 20 grams of octadecylenes are joined 100 millis
In the there-necked flask risen, stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain oil in 1 hour the most under nitrogen protection
Lead plumbate presoma, stand-by；
2) design temperature 100 DEG C it is adjusted to；By 75 microlitres (TMS)2Se, 42 microlitres (TMS)2S and 5 milliliters of octadecylene mixing are all
After even, it is rapidly injected in above-mentioned plumbi oleas presoma with syringe, reacts 5 minutes set times, to obtain final product；
3) room temperature is down in water-bath, injects 8 milliliters of anhydrous n-hexanes.Reactant liquor is transferred in glove box, adds isopropanol
Become cloudy to reactant liquor, by centrifugation machine rotating speed 8000 revs/min, after centrifugal 5 minutes, discard upper liquid；Again with n-hexane dissolution,
It is centrifuged after adding acetone, discards upper liquid.The product obtained is drained under vacuo, glove box preserves PbS0.4Se0.6Alloy
Quantum dot.
Embodiment 3
PbS0.6Se0.4The synthesis of alloy quantum dot:
1) preparation of plumbi oleas presoma: 223 milligrams of lead oxide, 0.7 gram of oleic acid and 20 grams of octadecylenes are joined 100 millis
In the there-necked flask risen, stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain oil in 1 hour the most under nitrogen protection
Lead plumbate presoma, stand-by；
2) design temperature 160 DEG C it is adjusted to；By 50 microlitres (TMS)2Se, 63 microlitres (TMS)2S and 5 milliliters of octadecylene mixing are all
After even, it is rapidly injected in above-mentioned plumbi oleas presoma with syringe, reacts 1 minute set time, to obtain final product；
3) room temperature is down in water-bath, injects 8 milliliters of anhydrous n-hexanes.Reactant liquor is transferred in glove box, adds isopropanol
Become cloudy to reactant liquor, by centrifugation machine rotating speed 8000 revs/min, after centrifugal 5 minutes, discard upper liquid；Again with n-hexane dissolution,
It is centrifuged after adding acetone, discards upper liquid.The product obtained is drained under vacuo, glove box preserves PbS0.6Se0.4Alloy
Quantum dot.
Embodiment 4
PbS0.8Se0.2The synthesis of alloy quantum dot:
1) preparation of plumbi oleas presoma: 223 milligrams of lead oxide, 0.7 gram of oleic acid and 20 grams of octadecylenes are joined 100 millis
In the there-necked flask risen, stirring evacuation 1 hour at 100 DEG C, 150 DEG C of heating obtain oil in 1 hour the most under nitrogen protection
Lead plumbate presoma, stand-by；
2) design temperature 200 DEG C it is adjusted to；By 25 microlitres (TMS)2Se, 84 microlitres (TMS)2S and 5 milliliters of octadecylene mixing are all
After even, it is rapidly injected in above-mentioned plumbi oleas presoma with syringe, reacts set time 15s, to obtain final product；
3) room temperature is down in water-bath, injects 8 milliliters of anhydrous n-hexanes.Reactant liquor is transferred in glove box, adds isopropanol
Become cloudy to reactant liquor, by centrifugation machine rotating speed 8000 revs/min, after centrifugal 5 minutes, discard upper liquid；Again with n-hexane dissolution,
It is centrifuged after adding acetone, discards upper liquid.The product obtained is drained under vacuo, glove box preserves PbS0.8Se0.2Alloy
Quantum dot.
For comparative example 1-2 and embodiment 1-4, as it is shown in figure 1, show by the ratio of S and Se in regulation alloy quantum dot
Example can be readily adjusted the band gap of quantum dot.As in figure 2 it is shown, PbS0.4Se0.6High-resolution-ration transmission electric-lens show alloy quantum
In point, various compositions are uniformly distributed, and are not that nucleocapsid structure does not has obvious lattice defect yet.
Embodiment 5
Organic polymer/nano-crystal hybrid solar photovoltaic device:
As it is shown on figure 3, the organic polymer of the present invention/nano-crystal hybrid solar photovoltaic device includes glass, attached
The anode layer on glass, with the hole transmission layer of anode layer laminating, the pure polymer layer fitted with hole transmission layer, with pure
The Polymer/nano crystalline substance hybrid layer of polymeric layer laminating, with the pure nano-crystalline layers of hybrid layer laminating, fits with pure nano-crystalline layers
Electron transfer layer, with the cathode layer of electron transfer layer laminating；Described polymer is PDTPBT, and described pure nano-crystalline layers is
PbSxSe1-x, described Polymer/nano crystalline substance hybrid layer is PDTPBT and PbSxSe1-x.Described anode layer is ITO；Described hole passes
Defeated layer is PEDOT:PSS；Described electron transfer layer is lithium fluoride, and described cathode layer is aluminum.
Concrete preparation method is: in the Conducting Glass of over cleaning successively spin coating PEDOT:PSS, PDTPBT and
PbSxSe1-xMixed solution, PbSxSe1-xSolution, then it is deposited with 0.6 nano-lithium fluoride (LiF) successively, 100 nano aluminum (Al), i.e.
?.
Preferably, PDTPBT and PbSxSe1-xThe mass body volume concentrations of mixed solution be 20 mg/ml；PbSxSe1-x
The mass body volume concentrations of solution is 10 mg/ml.
It is further preferred that the rotating speed of spin coating PEDOT:PSS is 4500 revs/min, time a length of 40 seconds；Spin coating DTPBT and
PbSxSe1-xThe rotating speed of mixed solution be 1000 revs/min, time a length of 20 seconds；Spin coating PbSxSe1-xThe rotating speed of solution is 1500
Rev/min, time a length of 20 seconds.
PDTPBT and PbSxSe1-xMixed solution longitudinal being separated can occur in spin coating process, partial polymer sinks
Amass and one layer pure polymer layer is formed below, be the hybrid layer of Polymer/nano crystalline substance above pure polymer layer.
Organic polymer/nano-crystal hybrid solar photovoltaic device as shown in Figure 3 is prepared by the method, various devices
Structure is as follows:
Device 1
Glass/ITO/PEDOT:PSS/PDTPBT:PbSe/PbSe/LiF/Al
Device 2
Glass/ITO/PEDOT:PSS/PDTPBT:PbS0.2Se0.8/ PbS0.2Se0.8/LiF/Al
Device 3
Glass/ITO/PEDOT:PSS/PDTPBT:PbS0.4Se0.6/ PbS0.4Se0.6/LiF/Al
Device 4
Glass/ITO/PEDOT:PSS/PDTPBT:PbS0.6Se0.4/ PbS0.6Se0.4/LiF/Al
Device 5
Glass/ITO/PEDOT:PSS/PDTPBT:PbS0.8Se0.2/ PbS0.8Se0.2/LiF/Al
Device 6
Glass/ITO/PEDOT:PSS/PDTPBT:PbS/ PbS/LiF/Al
Organic polymer/nano-crystal hybrid solar photovoltaic device that different component alloy quantum dots obtain, becomes with composition
The photovoltaic performance changed changes as shown in Figure 4, PbSxSe1-xThe opto-electronic conversion performance of alloy quantum dot is on the whole higher than binary quantum
Point PbS, PbSe.When consisting of PbS0.4Se0.6Time obtain peak efficiency 5.5%, simultaneously when consisting of PbS0.6Se0.4Time obtain
High 67% fill factor, curve factor, be the highest record of Polymer/nano crystalline substance hybrid solar cell.Therefore the present invention
PbSxSe1-xAlloy quantum dot has more excellent photoelectric properties compared with binary quantum dot, is conducive to the poly-of development a new generation
Compound/nano-crystalline solar battery, pure quantum dot solar cell and DSSC.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.The technical staff of the industry should
Understanding, above-described embodiment limits the present invention the most in any form, and the mode of all employing equivalents or equivalent transformation is obtained
Technical scheme, all falls within protection scope of the present invention.
Claims (3)
1. organic polymer/nano-crystal hybrid solar photovoltaic device, it is characterised in that: include glass, be attached to glass
On anode layer, with anode layer laminating hole transmission layer, with hole transmission layer laminating pure polymer layer, with pure polymer layer
The Polymer/nano crystalline substance hybrid layer of laminating, with the pure nano-crystalline layers of hybrid layer laminating, the electric transmission fitted with pure nano-crystalline layers
Layer, with the cathode layer of electron transfer layer laminating, described straight polymer is PDTPBT, and described Polymer/nano crystalline substance hybrid layer is
PDTPBT and PbSxSe1-x, described pure nano-crystalline layers is PbSxSe1-x, described PbSxSe1-xFollowing preparation method is used to prepare, bag
Include following steps:
1) preparation of plumbi oleas presoma: lead oxide, oleic acid and octadecylene are joined in the there-necked flask of 100 milliliters, 100
Stirring evacuation 1 hour at DEG C, 150 DEG C of heating obtain plumbi oleas presoma for 1 hour the most under nitrogen protection, stand-by；
2) it is adjusted to design temperature；By (TMS)2Se、(TMS)2After S and octadecylene mix homogeneously, it is rapidly injected above-mentioned with syringe
In plumbi oleas presoma, reacting the set time, to obtain final product, described design temperature is 30-200 DEG C；The described set time is 15 seconds-30
Minute, described (TMS)2Se and described (TMS)2The mol ratio of S is y, 0.1 < y < 10；
3) room temperature is down in water-bath, injects anhydrous n-hexane；Reactant liquor is transferred in glove box, adds isopropanol and become to reactant liquor
Muddiness, discards upper liquid after machine is centrifugal by centrifugation；Again with n-hexane dissolution, centrifugal after adding acetone, discard upper liquid, will obtain
Product drain under vacuo, in glove box preserve alloy quantum dot PbSxSe1-x。
A kind of organic polymer/nano-crystal hybrid solar photovoltaic device the most according to claim 1, it is characterised in that:
Described anode layer is ITO；Described hole transmission layer is PEDOT:PSS；Described electron transfer layer is lithium fluoride, and described cathode layer is
Aluminum.
3. the method preparing organic polymer/nano-crystal hybrid solar photovoltaic device, it is characterised in that: through over cleaning
Conducting Glass on spin coating PEDOT:PSS, PDTPBT and PbS successivelyxSe1-xMixed solution, PbSxSe1-xSolution, then depend on
Secondary evaporation 0.6 nano-lithium fluoride, 100 nano aluminum, to obtain final product, described PbSxSe1-xUse PbS in claim 1xSe1-xPreparation side
Method prepares.
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| "Hybrid polymer/nanoparticle solar cells: Preparation, principles and challenges";Brian R. Saunders;《Journal of Colloid and Interface Science》;20111213;第369卷(第1期);参见第6页第2栏第28行-第8页第1栏倒数第9行以及附图5(c)，表4 * |
| "Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals>";Wanli Ma;《NANO LETTERS》;20090312;第9卷(第4期);参见第1699页第1栏倒数第7-第1702页第2栏倒数第7行及附图1(A)-4(B) * |
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