CN1564329A - Method of increasing photoelectricity convesion efficiency of TiO2 photecell - Google Patents
Method of increasing photoelectricity convesion efficiency of TiO2 photecell Download PDFInfo
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- CN1564329A CN1564329A CNA2004100128904A CN200410012890A CN1564329A CN 1564329 A CN1564329 A CN 1564329A CN A2004100128904 A CNA2004100128904 A CN A2004100128904A CN 200410012890 A CN200410012890 A CN 200410012890A CN 1564329 A CN1564329 A CN 1564329A
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- gas
- conversion efficiency
- tio2
- plasma generating
- tio
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invented method carries processing for nano TiO2 in radiofrequency plasma generating device by using gas to raise photoelectric conversion efficiency of TiO2 photocell. The method is as following: placing nano TiO2 in radiofrequency plasma generating device, after vacuumizing, at least one of following gas Ar, He, N2, N2+H2 is added to radiofrequency plasma generating device; adjusting following parameters: gas flow rate 0.01-0.90 liter/minute, power of radio frequency 50-1000W, temperature 100-550deg.C and processing time 0.5-10 hour. The product is obtained after processing. The processed product possesses better performance of photovoltaic conversion, and conversion efficiency is raised to 30%-80%.
Description
Technical field
The present invention relates to a kind of gas of using (as Ar, He, N
2,, N
2+ H
2) radio frequency plasma is to TiO
2The nanocrystalline method of handling is especially handled the TiO that is used for opto-electronic conversion
2Nanocrystalline.
Background technology
TiO
2As a kind of semi-conducting material of broad stopband, at aspects such as opto-electronic conversion, photocatalysis and pollution processing very strong using value is arranged, be one of most active research focus in the fields such as material science, chemistry and environmental science.
Aspect opto-electronic conversion, TiO
2The nano-crystalline photoelectric pond has long service life, and is pollution-free, abundant raw materials and cheap, and manufacture craft is simple, helps the unrivaled superiority of large-scale production.But TiO
2There is the defective of two aspects in the nano-crystalline photoelectric pond: the one, because TiO
2Be a kind of semi-conducting material of broad stopband, its energy gap is 3.2ev, can only utilize wavelength to be lower than the sunlight of 400nm, and these solar energies only account for 3%～5% of sun light intensity; The 2nd,, electronics---the compound further raising that is restricting its photoelectric conversion efficiency that the hole is right.Can its excitation wavelength be moved to long wavelength's direction by modification, and impel electronics---the quick separation in hole, to improving TiO
2Photronic photoelectric conversion efficiency has crucial meaning.Method of modifying commonly used has couple TiO
2Nanocrystallinely carry out precious metal doping, make composite membrane etc., but effect is all not too remarkable.
The content of invention
The present invention is that a kind of gas of using is (as Ar, He, N
2, N
2+ H
2) radio frequency plasma is to TiO
2The nanocrystalline processing improved TiO
2The method of photocell photoelectric conversion efficiency.
The technical solution used in the present invention is, nano titanium oxide is put into the radio frequency plasma generating means, after vacuumizing, feeds one of following gas: Ar, He, N at least
2, N
2+ H
2, in the radio frequency plasma generating means, 0.01～0.90 liter/minute of adjustments of gas flow velocity, radio-frequency power are that 50～1000W, temperature are that 100-550 ℃ and processing time are 0.5～10 hour, promptly obtain required product.TiO after the processing
2Nanocrystalline than untreated TiO
2Nanocrystalline have a better opto-electronic conversion performance, and its photoelectric conversion efficiency can improve 30%～80%.
Aforesaid method is characterized in that: feed single Ar gas in the gas ions generating means.Because the atomic weight of argon Ar is big, the most obvious to the improvement effect of micro-structural, its photoelectric conversion efficiency can improve 50%～80%.
The present invention adopts a kind of method of physics to TiO
2Nanocrystallinely carry out modification---with plasmas such as argon gas to TiO
2The nanocrystalline processing.Handle back TiO
2Red shift has taken place in nanocrystalline absorption spectrum, has promoted electronics---and the separation that the hole is right makes its photoelectric conversion efficiency improve 30%～80%.Another advantage of the present invention is, merely with physical method to TiO
2Handle, technology is simple, cost is low, pollution-free, conveniently implement and be beneficial to large-scale production.
Condition of work of the present invention is:
Gas flow rate: 0.01～0.90 liter/minute
Heating-up temperature: 50 ℃～550 ℃
Radio-frequency power: 50～1000W
Processing time: 0.5～10 hour
Concrete execution mode and effect thereof:
Embodiment 1: heating-up temperature is 300 ℃, and the argon stream amount is 0.70 liter/minute, and radio-frequency power is 70W, and the processing time is 10h, and photoelectric conversion efficiency improves 83.6%.
Embodiment 2: heating-up temperature is 300 ℃, and the He throughput is 0.70 liter/minute, and radio-frequency power is 70W, and the processing time is 4h, and photoelectric conversion efficiency improves 41.6%.
Embodiment 3: heating-up temperature is 100 ℃, N
2The entraining air stream amount is 0.70 liter/minute, and radio-frequency power is 70W, and the processing time is 10h, and photoelectric conversion efficiency improves 30%.
Embodiment 4: heating-up temperature is 300 ℃, He+N
2Throughput is 0.20 liter/minute, and radio-frequency power is 70W, and the processing time is 10h, and photoelectric conversion efficiency improves 43.4%.
Embodiment 5: heating-up temperature is 300 ℃, Ar+He+N
2Throughput is 0.70 liter/minute, and radio-frequency power is 300W, and the processing time is 3h, and photoelectric conversion efficiency improves 58.3%.
The present invention has adopted single physical method, and cost is low, and is pollution-free, and convenient enforcement helps large-scale production.Improved TiO after treatment greatly
2The photoelectric conversion efficiency of nano thin-film.
Claims (2)
1, a kind of raising TiO
2The method of photocell photoelectric conversion efficiency is characterized in that: nano titanium oxide is put into the radio frequency plasma generating means, after vacuumizing, feed one of following gas: Ar, He, N
2, N
2+ H
2, in the radio frequency plasma generating means, 0.01～0.90 liter/minute of adjustments of gas flow velocity, radio-frequency power are that 50～1000W, temperature are that 100-550 ℃ and processing time are 0.5～10 hour, promptly obtain required product.
2, the method for claim 1 is characterized in that: feed single Ar gas in the gas ions generating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100128904A CN1309097C (en) | 2004-03-24 | 2004-03-24 | Method of increasing photoelectricity convesion efficiency of TiO2 photecell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100128904A CN1309097C (en) | 2004-03-24 | 2004-03-24 | Method of increasing photoelectricity convesion efficiency of TiO2 photecell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564329A true CN1564329A (en) | 2005-01-12 |
| CN1309097C CN1309097C (en) | 2007-04-04 |
Family
ID=34478042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100128904A Expired - Fee Related CN1309097C (en) | 2004-03-24 | 2004-03-24 | Method of increasing photoelectricity convesion efficiency of TiO2 photecell |
Country Status (1)
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|---|---|
| CN (1) | CN1309097C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452878A (en) * | 2017-08-28 | 2017-12-08 | 戚明海 | A kind of perovskite solar cell containing titanate esters and preparation method thereof |
| CN112387264A (en) * | 2020-11-16 | 2021-02-23 | 西南石油大学 | TiO based on plasma treatment2Method of modifying TiO2Photocatalyst and application |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0917208A1 (en) * | 1997-11-11 | 1999-05-19 | Universiteit van Utrecht | Polymer-nanocrystal photo device and method for making the same |
| CN1249819C (en) * | 2003-01-09 | 2006-04-05 | 中国科学院等离子体物理研究所 | Nanoporous films |
| CN1208127C (en) * | 2003-07-10 | 2005-06-29 | 复旦大学 | Method for preparing nano TiO2 film and its device |
-
2004
- 2004-03-24 CN CNB2004100128904A patent/CN1309097C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452878A (en) * | 2017-08-28 | 2017-12-08 | 戚明海 | A kind of perovskite solar cell containing titanate esters and preparation method thereof |
| CN112387264A (en) * | 2020-11-16 | 2021-02-23 | 西南石油大学 | TiO based on plasma treatment2Method of modifying TiO2Photocatalyst and application |
| CN112387264B (en) * | 2020-11-16 | 2022-02-08 | 西南石油大学 | TiO based on plasma treatment2Method of modifying TiO2Photocatalyst and application |
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| Publication number | Publication date |
|---|---|
| CN1309097C (en) | 2007-04-04 |
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