CN1815759A - Ordered nano semiconductor array dye sensilized solar cell - Google Patents
Ordered nano semiconductor array dye sensilized solar cell Download PDFInfo
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- CN1815759A CN1815759A CN 200510102357 CN200510102357A CN1815759A CN 1815759 A CN1815759 A CN 1815759A CN 200510102357 CN200510102357 CN 200510102357 CN 200510102357 A CN200510102357 A CN 200510102357A CN 1815759 A CN1815759 A CN 1815759A
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- electrode
- solar cell
- sensilized
- conducting material
- dye
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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
- Y02E10/542—Dye sensitized solar cells
Abstract
The disclosed solar cell includes following parts and structures: transparent case; photoelectrochemistry electrode and counter electrode inside the case; electrolyte filled the case; mouth of the case sealed by sealant. The photoelectrochemistry electrode is prepared by attaching semiconductor material on conductive body. Pieces of thread arranged in parallel of the said semiconductor material are attached to conductive body vertically. Comparing with prior art, the invention overcomes technical difficulties through parallel array, providing advantages of even composition and structure inside material, reasonable ordered distribution of outerspace, large specific surface area of prepared photoelectrochemistry electrode, effective diffusing photoproduction electrons and high conductance of ionic migration.
Description
Technical field
The present invention relates to solar photoelectric and utilize the field, be specifically related to a kind of ordered nano titanium oxide array dye sensilized solar cell.
Background technology
Dye-sensitized solar cells is by photoelectric chemical electrode (also claiming anode), electrolyte (dissolved oxygen reduction electricity to), form electrode three parts.Wherein photoelectric chemical electrode is to adopt semi-conducting material attached on the electric conductor, and the semi-conducting material majority is selected nano-titanium oxide for use, observes under the high power Electronic Speculum, and the microscopic pattern of electrode is the interconnected nano particle of cellular.The effect of photoelectric chemical electrode is the absorption of photon, the generation of light induced electron and transmission.Inside is loose structure, is used for the migration of oxidation-reduction pair, and this part is the core of dye sensitized electrode.
The semi-conducting material of the photoelectric chemical electrode of existing dye-sensitized solar cells adopts the presoma of titanium oxide usually, produces titanium oxide through decomposition step.Low boilers volatilization and presoma decompose the generation loose structure in the presoma decomposable process, adhere between the titan oxide particles and are connected.Problem is that the crystal formation of the coupling part material between (1) particle and the particle or structure and particle have difference, causes defective and dislocation, and the result influences the transmission rate of light induced electron, even improves the chance of light induced electron and hole-recombination; (2) owing to loose structure is that micromolecule volatilization or presoma decomposition condensation form, the size in hole, form are to form at random, the hole of impossible formation rule, the result reduces effective specific area, influences the diffusion of redox couple and increases the diffusion distance, also increases the diffusion distance of light induced electron.
Summary of the invention
The objective of the invention is to overcome the problem that the photoelectric chemical electrode semi-conducting material of above-mentioned existing dye-sensitized solar cells exists, a kind of orderly semi-conducting material array dye sensilized solar cell is provided, its semi-conducting material is that the filiform that is arranged in parallel vertically is attached on the electric conductor, with the orderly ions diffusion network of formation rule, make the ions diffusion distance short as far as possible.
The invention provides a kind of orderly semi-conducting material array dye sensilized solar cell, comprise the printing opacity housing, photoelectric chemical electrode is arranged in the printing opacity housing and to electrode, be filled with electrolyte in the printing opacity housing, its port is encapsulated by fluid sealant; Photoelectric chemical electrode be semi-conducting material attached to constituting on the electric conductor, described semi-conducting material is that the filiform that is arranged in parallel vertically is attached on the electric conductor.
In the technique scheme, described semi-conducting material is a nano-titanium oxide.
In the technique scheme, described electric conductor is electro-conductive glass, conductive plastics or other electric conducting material.
In the technique scheme, described electrolyte is for containing I
-And I
2Electrolyte.
Light induced electron (1) in photoelectric chemical electrode requires diffusion rate fast, avoids the chance with hole-recombination; (2) hole between the particle is wanted unimpeded ions diffusion network, and the diffusion distance is short more good more.The material of structure and crystal formation homogeneous does not have defective, and electron annihilation does not take place, and electrons spread speed is consistent.Semi-conducting material is made the filiform that is arranged in parallel (or club, thread) vertically be attached to the transmission that helps electronics on the electric conductor, electronics keeps uni-directional diffusion substantially under effects such as electrode potential, electric field, and speed improves naturally.And electronics arrives external circuit with the fastest speed through conductor, and the chance compound with hole (positive charge) reduces greatly.Because the arrangement of semi-conducting material (nano-titanium oxide) is that regular distribution is on conductor, formation rule space between the material, the size an of the best is selected in diffusion according to oxidation-reduction pair (ionic forms), under this condition, ion spreads at anode with between to electrode with the shortest diffusion distance, helps improving photoelectric conversion efficiency.
Compared with prior art, the present invention has following beneficial effect:
The key technical indexes of dye-sensitized solar cells is a photoelectric conversion efficiency, leads and is closely related with light induced electron diffusion rate, electronics and hole-recombination, ions diffusion electricity.The structurally associated of electrons spread speed and material, diffusion rate improves can reduce the electronics residence time, reduces the probability of electronics and hole-recombination.The ions diffusion electricity is led by diffusion length, unimpeded proliferation network decision.
Nano-particle material forms dumb-bell shape particle connector easily after Overheating Treatment, structures such as irregular endoporus (see figure 1) are unfavorable for electronics and ions diffusion.Nano-array well overcomes these technical barriers, material internal The Nomenclature Composition and Structure of Complexes homogeneous, space outerpace distribution rational and orderly (seeing Fig. 2, Fig. 3), with the existing bigger serface of the anode of this material preparation, guaranteed that also light induced electron effectively spreads and high ion migration electricity is led, obvious improvement has compared with prior art been arranged.
Description of drawings
Fig. 1 is the structure diagram of existing dye-sensitized solar cells;
Fig. 2 is the structure diagram of dye-sensitized solar cells of the present invention;
Fig. 3 is the nano-titanium oxide array of figure.
Embodiment
Embodiment 1
As shown in Figure 2, a kind of orderly semi-conducting material array dye sensilized solar cell provided by the invention comprises printing opacity housing 1, photoelectric chemical electrode 2 is arranged and to electrode 3 in the printing opacity housing 1, be filled with electrolyte 4 in the printing opacity housing 1, its port is encapsulated by fluid sealant; Photoelectric chemical electrode 2 is nano-titanium oxides 21 attached to constituting on the electro-conductive glass 22, and described nano-titanium oxide 21 is that the filiform that is arranged in parallel vertically is attached on the electric conductor 22.As shown in Figure 3.In the technique scheme, electrolyte 4 is for containing I
-And I
2Electrolyte.Nano-titanium oxide 21 is made the filiform that is arranged in parallel vertically be attached to the transmission that helps electronics on the electro-conductive glass 22, electronics keeps uni-directional diffusion substantially under electrode potential, electric field action, and speed improves naturally.And electronics arrives external circuit with the fastest speed through conductor, and the chance compound with hole (positive charge) reduces greatly.Because the arrangement of nano material is that regular distribution is on conductor, formation rule space between the material, the size an of the best is selected in diffusion according to oxidation-reduction pair (ionic forms), under this condition, ion spreads at anode with between to electrode with the shortest diffusion distance, helps improving photoelectric conversion efficiency.
Get purity greater than 99.99% aluminium film, 10～20 microns of thickness adopt the method for electrochemical anodic oxidation to make porous aluminium.At first annealed 23 hours down, then corroded 2 minutes in 5% sodium hydrate aqueous solution at 500 ℃.In containing 60% ethanol, 9.5% butyl cellosolve, 12% perchloric acid, carry out electrochemical polish in the solution of 18.5% water: current density is 500mA/cm
2(milliampere/square centimeter), 6 ℃ of temperature, 2 minutes time.This aluminium film is made anode, and platinum is done electrode is carried out oxidation and corrosion successively.Oxidizing condition is for the first time: solution adopts 10% phosphoric acid, constant voltage 190V, 1 ℃ of temperature, oxidation 5 hours; Place 1: 1 mixed liquor of 6% phosphoric acid and 0.2M chromic acid to corrode 40 minutes the aluminium film, temperature is 60 ℃; Oxidizing condition is with for the first time identical for the second time, and oxidization time is 1 hour.So far, porous alumina formwork promptly can be made into.This porous aluminium is attached to the surface of conducting electricity through the electro-conductive glass that cleans carries out electrochemical deposition.Deposit solution is by following preparation: get 30% titanium trichloride, use 10% dissolving with hydrochloric acid, to concentration 0.2M, transfer pH about 2 with saturated sodium carbonate solution with distilled water diluting.Impulsive condition: positive current 55mA/cm
2, 6 milliseconds of times, negative current 40mA/cm
2, 3 milliseconds of times.Good film be will deposit then and removal aluminium oxide, the nano-titanium oxide of being arranged in order in watery hydrochloric acid, dissolved.
At 0.2mM (mM/liter) Ruthenium620-1H3TBA (ruthenium compound dyestuff), ethanol is made solvent, soaks 24 hours with prepared orderly arrangement titanium oxide, take out, with absolute ethyl alcohol drip washing 2～3 times, dry in nitrogen, photoelectric chemical electrode 2 completes.With photoelectric chemical electrode 2 and to electrode 3, inhale electrolyte 4, orderly semi-conducting material array dye sensilized solar cell is made in encapsulation.
Claims (4)
1, a kind of ordered nano semiconductor array dye sensilized solar cell comprises printing opacity housing (1), photoelectric chemical electrode (2), and to electrode (3), electrolyte (4); Photoelectric chemical electrode (2) and electrode (3) is positioned at housing (1), housing (1) also is filled with electrolyte (4), encapsulation; Photoelectric chemical electrode (2) is that semi-conducting material (21) is gone up formation attached to electric conductor (22), it is characterized in that described semi-conducting material (21) is that the filiform that is arranged in parallel vertically is attached on the electric conductor (22).
2, ordered nano semiconductor array dye sensilized solar cell according to claim 1 is characterized in that described semi-conducting material (21) is a nano-titanium oxide.
3, ordered nano semiconductor array dye sensilized solar cell according to claim 1 and 2 is characterized in that described electric conductor (22) is electro-conductive glass, conductive plastics or other electric conducting material.
4, ordered nano semiconductor array dye sensilized solar cell according to claim 1 is characterized in that described electrolyte (4) is for containing I
-And I
2Electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510102357 CN1815759A (en) | 2005-12-13 | 2005-12-13 | Ordered nano semiconductor array dye sensilized solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510102357 CN1815759A (en) | 2005-12-13 | 2005-12-13 | Ordered nano semiconductor array dye sensilized solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1815759A true CN1815759A (en) | 2006-08-09 |
Family
ID=36907815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510102357 Pending CN1815759A (en) | 2005-12-13 | 2005-12-13 | Ordered nano semiconductor array dye sensilized solar cell |
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|---|---|
| CN (1) | CN1815759A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100505325C (en) * | 2006-11-10 | 2009-06-24 | 北京大学 | Dye sensitization solar cell and working electrode thereof |
| CN106504899A (en) * | 2015-09-07 | 2017-03-15 | 上海久能能源科技发展有限公司 | A kind of array dye sensilized solaode |
-
2005
- 2005-12-13 CN CN 200510102357 patent/CN1815759A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100505325C (en) * | 2006-11-10 | 2009-06-24 | 北京大学 | Dye sensitization solar cell and working electrode thereof |
| CN106504899A (en) * | 2015-09-07 | 2017-03-15 | 上海久能能源科技发展有限公司 | A kind of array dye sensilized solaode |
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