WO2010016735A2 - 염료감응 태양전지의 제조방법 - Google Patents
염료감응 태양전지의 제조방법 Download PDFInfo
- Publication number
- WO2010016735A2 WO2010016735A2 PCT/KR2009/004394 KR2009004394W WO2010016735A2 WO 2010016735 A2 WO2010016735 A2 WO 2010016735A2 KR 2009004394 W KR2009004394 W KR 2009004394W WO 2010016735 A2 WO2010016735 A2 WO 2010016735A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dye
- solar cell
- photoelectrode
- photoelectrode layer
- sensitized solar
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 11
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 20
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 239000008393 encapsulating agent Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 25
- 239000005416 organic matter Substances 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 239000000356 contaminant Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 5
- 239000011941 photocatalyst Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 230000004913 activation Effects 0.000 abstract description 3
- 239000000975 dye Substances 0.000 description 32
- 239000000463 material Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 229910000314 transition metal oxide Inorganic materials 0.000 description 7
- 239000010409 thin film Substances 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 for example Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2059—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
-
- 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
-
- 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
Definitions
- the present invention relates to a method for manufacturing a dye-sensitized solar cell, and more particularly, organic materials and contaminants remaining in the photoelectrode layer due to ultraviolet irradiation are not only decomposed and removed, but the material forming the photoelectrode layer itself serves as a photocatalyst. Therefore, when the electron is excited by the irradiation of ultraviolet rays and activated, the surrounding H 2 O or O 2 takes the electrons and decomposes the surrounding organic matter, and cleans the surface of the photoelectrode layer before dye adsorption.
- the photoelectrode layer is activated by UV irradiation, so that the adsorption becomes easier and the dye adsorption efficiency is increased, thereby greatly improving the dye adsorption efficiency in two aspects, thereby improving the photoelectric conversion efficiency of the solar cell. It relates to a method for producing a dye-sensitized solar cell can be obtained.
- Dye-sensitized solar cells have the potential to replace conventional amorphous silicon solar cells because their manufacturing cost is significantly lower than conventional silicon-based solar cells. Unlike silicon solar cells, dye-sensitized solar cells absorb visible light It is a photoelectrochemical solar cell mainly composed of a dye molecule capable of generating electron-hole pairs and a transition metal oxide that transfers generated electrons.
- the unit cell structure of a general dye-sensitized solar cell is based on a conductive transparent electrode made of an upper and lower transparent substrate and a transparent conductive oxide (TCO) formed on the surface of the transparent substrate, respectively.
- a transition metal oxide porous layer on which a dye is adsorbed is formed on the conductive transparent electrode, and a catalyst thin film electrode is formed on the other conductive transparent electrode corresponding to the second electrode, and the transition metal oxide, for example, TiO 2 , the electrolyte is filled between the porous electrode and the catalyst thin film electrode.
- a dye-sensitized solar cell supplies electrons to an oxidized dye between a photoelectrode substrate coated with a dye-doped photoelectrode (TiO 2 ) material that receives electrons and a catalytic electrode substrate that supplies electrons. Based on the electrolyte, the photoelectric conversion efficiency of the dye-sensitized solar cell determines how much the dye is adsorbed on the photoelectrode to convert light into electricity.
- the transition metal oxide porous layer (porous photoelectrode layer) (TiO 2 ) constituting the photoelectrode portion of the dye-sensitized solar cell forms a TiO 2 paste and heat-treats to remove organic matter constituting the paste, as well as TiO 2 nanoparticles. Necking facilitates the movement of the injected electrons from the dye.
- the present invention not only decomposes and removes organic substances and contaminants remaining in the photoelectrode layer, but also decomposes organic substances in the surroundings by the material forming the photoelectrode layer, and thus, before dye adsorption, The surface of the electrode layer is cleaned, and the adsorption becomes easier by the activation of the photoelectrode layer, so that the dye adsorption efficiency is increased, and thus a method of manufacturing a dye-sensitized solar cell which can obtain an effect of improving the photoelectric conversion efficiency of the solar cell.
- the purpose is to provide.
- It provides a method of manufacturing a dye-sensitized solar cell further comprising the step of irradiating the ultraviolet light to the photoelectrode layer prior to the step of adsorbing the dye.
- the material constituting the photoelectrode layer itself acts as a photocatalyst.
- B2 O2 takes these electrons and decomposes the surrounding organic matter, cleans the surface of the photoelectrode layer before dye adsorption, and improves the adsorption efficiency.
- Adsorption efficiency is increased to greatly improve the dye adsorption efficiency in two aspects, thereby improving the photoelectric conversion efficiency of the solar cell.
- FIG. 1 is a view schematically illustrating a cleaning mechanism when a photocatalytic property occurs in a photoelectrode layer in a dye-sensitized solar cell manufacturing method of the present invention.
- the method of manufacturing a dye-sensitized solar cell of the present invention comprises the steps of forming a photoelectrode layer and adsorbing a dye on the photoelectrode layer. Irradiating ultraviolet light is further included.
- a dye-sensitized solar cell receives electrons in a dye oxidized between a photoelectrode substrate coated with a dye-attached photoelectrode (specifically, TiO 2 ) material that receives electrons and a catalytic electrode substrate supplying electrons. It is composed of the electrolyte that supplies the basic structure. Therefore, a general dye-sensitized solar cell is composed of substrates having these two functions facing each other.
- the photoelectrode portion made of the photoelectrode material is made of a photoelectrode layer on which a dye is adsorbed to generate electrons and a transparent conductive material (TCO) for electrical connection to a lower portion thereof.
- the photoelectrode layer is mainly a transition metal oxide n. It is made of a type semiconductor material and has a structure in which dye is adsorbed thereto, and the transition metal oxide (for example, TiO 2 ) constituting the photoelectrode layer has an average particle size of 10 to 50 nm, and the photoelectrode layer made of these Is mainly formed of a thin film having a thickness of about 15 ⁇ m, and forms a porous thin film layer having a very large specific surface area. Therefore, the dye particles are chemically adsorbed on the formed large surface area to maximize the photoelectric conversion efficiency.
- the present invention provides a photoelectrode layer, preferably TiO, before coloring the dye on the photoelectrode layer constituting the photoelectrode portion, preferably the TiO 2 layer.
- a photoelectrode layer preferably TiO
- to activate the second porous layer by using a photocatalytic property of TiO 2 as shown in Figure 1, to this was irradiated with ultraviolet rays to the photo-electrode layer prior to the step of adsorbing the dye optical electrode layers, preferably TiO 2 Since the activating layer acts as a photocatalyst through the process as shown in FIG.
- the surrounding H 2 O or O 2 takes these electrons and Decomposing, cleaning the surface of the photoelectrode layer prior to dye adsorption and activating the surface of the photoelectrode layer, preferably TiO 2 particles. Therefore, the dye absorption effect is maximized to improve the photoelectric conversion efficiency of the dye-sensitized solar cell.
- the ultraviolet light itself also has the effect of decomposing organic matter, as is commonly known, which further increases the cleaning effect described above.
- the step of irradiating ultraviolet rays may be performed immediately before the process of adsorbing the dye to maintain activation and maximize the cleaning effect.
- the porous photoelectrode layer (TiO 2 ) constituting the photoelectrode part forms a TiO 2 paste and heat-treats to remove organic matter constituting the paste.
- the porous photoelectrode layer (TiO 2 ) is irradiated with ultraviolet rays prior to dye adsorption to remove residual organic matter and contaminants.
- the dye adsorption efficiency is increased, the adsorption intensity is improved, and the photoelectric conversion efficiency of the solar cell is improved.
- the manufacturing method except for the technical elements of the present invention described above may be performed in the same or similar manner as in the case of the manufacturing method of manufacturing a conventional dye-sensitized solar cell. The detailed description thereof will be omitted.
- the present invention provides a dye-sensitized solar cell manufactured by the method of manufacturing a dye-sensitized solar cell as described above, which is a light consisting of a dye-adsorbed photoelectrode layer produced by the dye-sensitized solar cell manufacturing method described above An electrolyte electrically connecting an electrode, a catalyst electrode corresponding to the photoelectrode, the photoelectrode and the catalyst electrode; And, it provides a dye-sensitized solar cell comprising an airtight portion for hermetically sealing the photoelectrode, the catalyst electrode and the electrolyte as an upper plate, a lower plate and an encapsulant.
- the structure of the dye-sensitized solar cell except for the technical elements of the present invention described above may be configured in the same or similar structure to that of a conventional dye-sensitized solar cell. The description is omitted.
- the manufacturing method of the dye-sensitized solar cell of the present invention Not only organic matter and contaminants remaining in the photoelectrode layer due to ultraviolet irradiation are decomposed and removed, and the material constituting the photoelectrode layer itself acts as a photocatalyst.
- O2 takes these electrons and decomposes the surrounding organic matter, and cleans the surface of the photoelectrode layer before dye adsorption, improving the adsorption efficiency.
- Adsorption efficiency is increased to greatly improve the dye adsorption efficiency in two aspects, thereby improving the photoelectric conversion efficiency of the solar cell.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Hybrid Cells (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
Claims (4)
- 광전극층을 형성하고, 상기 광전극층에 염료를 흡착하는 공정을 포함하는 염료감응 태양전지의 제조방법에 있어서,상기 염료를 흡착하는 공정이전에 상기 광전극층에 자외선을 조사하는 단계를 더 포함하는 것을 특징으로 하는 염료감응 태양전지의 제조방법.
- 제1항에 있어서,상기 자외선을 조사하는 단계가 염료를 흡착하는 공정 직전에 이루어지는 것을 특징으로 하는 염료감응 태양전지의 제조방법.
- 제1항에 있어서,상기 광전극층은 다공질 TiO2막인 것을 특징으로 하는 염료감응 태양전지의 제조방법.
- 제1항 내지 제3항 중 어느 한 항의 제조방법에 의하여 제조되는 염료가 흡착된 광전극층으로 이루어진 광전극;상기 광전극에 대응하는 촉매전극;상기 광전극 및 촉매전극을 전기적으로 연결하는 전해질; 및,상판, 하판 및 봉지재로 상기 광전극, 촉매전극 및 전해질을 기밀하는 기밀부를 포함하는 염료감응 태양전지.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980129600.5A CN102105997B (zh) | 2008-08-08 | 2009-08-06 | 染料敏化太阳能电池的制造方法 |
EP09805196A EP2317563A4 (en) | 2008-08-08 | 2009-08-06 | METHOD FOR PRODUCING A COLOR-SENSITIZED SOLAR CELL |
JP2011522011A JP2011530783A (ja) | 2008-08-08 | 2009-08-06 | 染料増感太陽電池の製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080077734A KR101414450B1 (ko) | 2008-08-08 | 2008-08-08 | 염료감응 태양전지의 제조방법 |
KR10-2008-0077734 | 2008-08-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010016735A2 true WO2010016735A2 (ko) | 2010-02-11 |
WO2010016735A3 WO2010016735A3 (ko) | 2010-04-01 |
Family
ID=41664102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2009/004394 WO2010016735A2 (ko) | 2008-08-08 | 2009-08-06 | 염료감응 태양전지의 제조방법 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2317563A4 (ko) |
JP (1) | JP2011530783A (ko) |
KR (1) | KR101414450B1 (ko) |
CN (1) | CN102105997B (ko) |
WO (1) | WO2010016735A2 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102832111A (zh) * | 2012-09-06 | 2012-12-19 | 北京大学 | 一种提高太阳电池转换效率的方法 |
WO2014083884A1 (ja) * | 2012-11-27 | 2014-06-05 | 積水化学工業株式会社 | 多孔質酸化チタン積層体の製造方法 |
WO2014084133A1 (ja) * | 2012-11-27 | 2014-06-05 | 積水化学工業株式会社 | 太陽電池の製造方法及び太陽電池 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4077594B2 (ja) * | 1999-05-27 | 2008-04-16 | 触媒化成工業株式会社 | 光電気セルおよび金属酸化物半導体膜形成用塗布液、光電気セル用金属酸化物半導体膜の製造方法 |
JP2002231326A (ja) * | 2001-02-06 | 2002-08-16 | Nec Corp | 光電変換素子及びその製造方法 |
US6872766B2 (en) * | 2001-10-03 | 2005-03-29 | Eastman Kodak Company | Ultraviolet light filter element |
WO2004017452A1 (ja) * | 2002-08-13 | 2004-02-26 | Bridgestone Corporation | 色素増感型太陽電池の改良 |
JP4356865B2 (ja) | 2002-09-10 | 2009-11-04 | 富士フイルム株式会社 | 金属−金属酸化物複合電極の作製方法、光電変換素子及び光電池 |
DE60212654D1 (de) | 2002-11-28 | 2006-08-03 | Imra Europe Sa | Metallkomplexe als Photosensibilatoren und photoelektrochemische Zelle |
JP3671183B2 (ja) * | 2003-09-04 | 2005-07-13 | 司 吉田 | 色素増感型太陽電池の製造方法 |
US20050107486A1 (en) | 2003-11-17 | 2005-05-19 | Bi Le-Khac | UV-curable polyols |
US20090014062A1 (en) * | 2004-01-22 | 2009-01-15 | Showa Denko K.K. | Metal Oxide Dispersion, Metal Oxide Electrode Film, and Dye Sensitized Solar Cell |
JP2005235757A (ja) * | 2004-01-22 | 2005-09-02 | Showa Denko Kk | 金属酸化物電極膜および色素増感型太陽電池 |
DE112006002294T5 (de) * | 2005-09-02 | 2008-10-30 | Kyocera Corp. | Lichtelektrische Umwandlungsvorrichtung und Verfahren zu deren Herstellung sowie lichtelektrische Energieerzeugungsvorrichtung |
JP4982067B2 (ja) * | 2005-10-07 | 2012-07-25 | グンゼ株式会社 | 色素増感太陽電池用光電極の製造方法 |
JP2007265629A (ja) | 2006-03-27 | 2007-10-11 | Sekisui Jushi Co Ltd | 色素増感型太陽電池 |
JP4808560B2 (ja) * | 2006-07-21 | 2011-11-02 | 株式会社豊田中央研究所 | 酸化チタン粒子含有組成物、光電極の製造方法及び太陽電池の製造方法 |
-
2008
- 2008-08-08 KR KR1020080077734A patent/KR101414450B1/ko active IP Right Grant
-
2009
- 2009-08-06 CN CN200980129600.5A patent/CN102105997B/zh not_active Expired - Fee Related
- 2009-08-06 EP EP09805196A patent/EP2317563A4/en not_active Withdrawn
- 2009-08-06 WO PCT/KR2009/004394 patent/WO2010016735A2/ko active Application Filing
- 2009-08-06 JP JP2011522011A patent/JP2011530783A/ja active Pending
Non-Patent Citations (2)
Title |
---|
MICHAEL GRATZEL ET AL., SWISS FEDERAL INSTITUTE OF TECHNOLOGY LAUSANNE(EPFL), 1991 |
See also references of EP2317563A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102832111A (zh) * | 2012-09-06 | 2012-12-19 | 北京大学 | 一种提高太阳电池转换效率的方法 |
WO2014083884A1 (ja) * | 2012-11-27 | 2014-06-05 | 積水化学工業株式会社 | 多孔質酸化チタン積層体の製造方法 |
WO2014084133A1 (ja) * | 2012-11-27 | 2014-06-05 | 積水化学工業株式会社 | 太陽電池の製造方法及び太陽電池 |
Also Published As
Publication number | Publication date |
---|---|
KR101414450B1 (ko) | 2014-07-04 |
CN102105997B (zh) | 2014-03-26 |
CN102105997A (zh) | 2011-06-22 |
EP2317563A4 (en) | 2012-09-12 |
WO2010016735A3 (ko) | 2010-04-01 |
EP2317563A2 (en) | 2011-05-04 |
JP2011530783A (ja) | 2011-12-22 |
KR20100018961A (ko) | 2010-02-18 |
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