CN1564329A - Method of increasing photoelectricity convesion efficiency of TiO2 photecell - Google Patents
Method of increasing photoelectricity convesion efficiency of TiO2 photecell Download PDFInfo
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- photoelectric conversion
- tio
- tio2
- conversion efficiency
- radio frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005622 photoelectricity Effects 0.000 title 1
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 14
- 229910052786 argon Inorganic materials 0.000 claims abstract description 10
- 150000002500 ions Chemical class 0.000 claims description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims 1
- 229910010413 TiO 2 Inorganic materials 0.000 abstract description 16
- 239000002159 nanocrystal Substances 0.000 abstract 3
- 239000004408 titanium dioxide Substances 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 210000002381 plasma Anatomy 0.000 description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 5
- 230000005693 optoelectronics Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011031 large-scale manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
本发明是一种用气体(如Ar、He、N2、N2+H2)射频等离子体对TiO2纳米晶进行处理，来提高TiO2光电池光电转换效率的方法，该方法是：将纳米二氧化钛放入射频等离子体发生装置中，抽真空后，至少通入下列气体之一：Ar、He、N2、N2+H2，到射频等离子体发生装置中，调节气体流速0.01～0.90升/分、射频功率为50～1000W、温度为100－550℃及处理时间为0.5～10小时，即得到所需产品。处理后的TiO2纳米晶比未处理的TiO2纳米晶具有更好的光电转换性能，其光电转换效率可提高30％～80％。The present invention is a method for improving the photoelectric conversion efficiency of a TiO2 photocell by treating TiO2 nanocrystals with gas (such as Ar, He, N2 , N2 + H2 ) radiofrequency plasma. Titanium dioxide is placed in a radio frequency plasma generator, and after vacuuming, at least one of the following gases: Ar, He, N 2 , N 2 +H 2 is introduced into the radio frequency plasma generator, and the gas flow rate is adjusted to 0.01-0.90 liters /min, the radio frequency power is 50-1000W, the temperature is 100-550°C and the processing time is 0.5-10 hours, the desired product can be obtained. The treated TiO 2 nanocrystal has better photoelectric conversion performance than the untreated TiO 2 nanocrystal, and its photoelectric conversion efficiency can be increased by 30% to 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)
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)
| Country | Link |
|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1309097C (en) | 2007-04-04 |
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