CN102104086A - Patterned composite film preparation method for reinforcing photo-absorption of titanium dioxide film - Google Patents
Patterned composite film preparation method for reinforcing photo-absorption of titanium dioxide film Download PDFInfo
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- CN102104086A CN102104086A CN2009101177455A CN200910117745A CN102104086A CN 102104086 A CN102104086 A CN 102104086A CN 2009101177455 A CN2009101177455 A CN 2009101177455A CN 200910117745 A CN200910117745 A CN 200910117745A CN 102104086 A CN102104086 A CN 102104086A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
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Abstract
The invention discloses a patterned composite film preparation method for reinforcing photo-absorption of a titanium dioxide film. The method comprises the following steps: preparing a TiO2 nano-film on a glass substrate by using Ti(SO4)2 and H2O2 as precursor solutions; preparing a patterned self-assembled monomolecular film on the surface of the TiO2 nano-film by utilizing an ultraviolet photoetching technology; and selectively depositing Cu2S nano-crystal, and preparing the patterned Cu2S nano-film with complete pattern, clear boundary and compact structure on the surface of the TiO2 nano-film by utilizing a chemical bath method. The patterned Cu2S nano-film is used as a light absorption layer, and the TiO2 nano-film is used as an electron injecting layer to form p-n heterojunction of a patterned micro-structure Cu2S/TiO2 composite film, so the light absorption strength of the TiO2 nano-film can be effectively improved, the wavelength range of light absorption is enlarged, and the solar energy absorption efficiency of the film is further improved, thus the patterned composite film has wide application range in the fields of solar cells, photoswitches, photoelectric conversion, optical storage and the like.
Description
Technical field
The present invention relates to the technology of preparing of semiconductor patterning film, particularly relate at titanium dioxide nano-film surface preparation patterning nanometer Cu
2The S film is to strengthen the laminated film technology of preparing of sunlight absorption efficiency.
Background technology
Cu
2S has good photoelectric properties as a kind of p-N-type semiconductor N material, the about 1.2eV of its energy gap.With Cu
2S is the p-Cu of p-N-type semiconductor N
2The electricity conversion of S/n-CdS heterojunction solar battery can reach on 10%, but owing to CdS poor stability, poisonous, reason such as interface charge carrier transfer rate is lower, has limited its further development and practical application.Titanium dioxide is a kind of typical n-N-type semiconductor N material, owing to have unique photoelectricity physics, photocatalysis performance and excellent chemical stability, has important application at aspects such as solar cell, optoelectronic switch and optical storages, it is the fastest to become development in recent years, having most one of scientific research field of vigor, also is the optimal selection that replaces n-CdS to prepare heterojunction solar battery.
Patterning techniques has great significance for the development of modern science and technology.It is reported the TiO of patterning
2After film was made solar cell, its photoelectric conversion efficiency was 10 times of non-patterned film, and this is because increasing of interface connection causes surface area to increase.Chen etc. find photoelectric current in experiment, the photocatalysis behavior strengthens along with reducing of pattern dimension, so Optical Electro-Chemistry character can be regulated and control by the pattern dimension size.Had many at present about p-Cu
xS/n-TiO
2The report of laminated film, but about with Cu
xThe Cu that S modifies with patterning micro-structural
xS/TiO
2The preparation of nano compound film, the patent in order to the sunlight absorption efficiency that improves film yet there are no report so far.
Summary of the invention
The object of the present invention is to provide the preparation method of the patterning nano compound film of simple, with low cost, the eco-friendly enhancing titanium deoxid film of a kind of technology absorbing properties.
The present invention is with Ti (SO
4)
2And H
2O
2For precursor solution prepares TiO on substrate of glass
2Nano thin-film; The technology of utilizing ultraviolet photolithographic then is at TiO
2The self-assembled monolayer of nano thin-film surface preparation patterning; Utilizing the method for chemical bath at last, is complexing agent with EDTA, CuSO
45H
2O and Na
2S
2O
3Be precursor solution, optionally deposit Cu
2S is nanocrystalline, at TiO
2Nano thin-film surface preparation pattern is complete, the patterning nanometer Cu of sharpness of border, compact structure
2The S film.
A kind of patterning preparation method of composite film that strengthens the titanium deoxid film light absorption is characterized in that step is as follows:
1) TiO
2The preparation of film: substrate of glass is immersed the absolute methanol solution of 3-aminopropyl triethoxysilane (APTS), assemble under the room temperature, clean with absolute methanol, secondary water successively after the taking-up, and dry up with nitrogen; Get Ti (SO then
4)
2, H
2O
2Form precursor solution with water, and adjusting pH value is about 1.6; The substrate of glass that then surface is had APTS places this forerunner's liquid solution, 70~80 ℃ of deposition 20~60min;
2)-CH
3/-NH
2Constructing of-SAMs patterned surface: with the made TiO of step (1)
2Nano thin-film places the hexane solution of octadecyl trichlorosilane (OTS), assembles under the room temperature, takes out the back and cleans with n-hexane, and dry up with nitrogen; The TiO that has OTS then on the surface
2Place mask and ultraviolet lighting on the nano thin-film, in the process of illumination, the OTS SAMs of exposure area becomes hydroxyl, has obtained-OH/-CH
3The surface of SAMs patterning; To have again-OH/-CH
3The absolute methanol solution of 3-aminopropyl triethoxysilane (APTS) is put in the substrate of SAMs patterning, assembles under the room temperature, obtains-CH
3/-NH
2Constructing of-SAMs patterned surface;
3) Cu
2The preparation of S patterned film: step (2) substrate of patterning SAMs is put into the precursor solution that contains copper sulphate, sodium thiosulfate, EDTA, and regulating the pH value is 1~3,65-75 ℃ of deposition twice, each 0.5~1h; At last to Cu
2The S film is sintering processes under 200~300 ℃ of nitrogen protections, at TiO
2The nano thin-film surface obtains that pattern is complete, the patterning nanometer Cu of sharpness of border, compact structure
2The S film.
In the such scheme:
Cu with patterning
2The S film is as the absorbed layer of light, TiO
2Be electron injecting layer, this structure can effectively stop the compound of electronics and hole;
The nanometer Cu of preparation
2S optionally is deposited under the inducing of monomolecular film-NH
2The surface, and-CH
3The surface does not almost deposit;
The composition of the patterned film of preparation is pure Cu
2The S nano crystal.
Technical characterstic of the present invention is:
1) technology of the present invention is simple, with low cost, environmental friendliness, is easy to realize.
2) has active group (NH by chemisorbed in substrate surface formation
2) monomolecular film, use monomolecular film and reduce inorganic one-tenth nuclear barrier, (70 ℃) induce nucleation and growth at a lower temperature.
3) complete, the sharpness of border of the patterned film pattern of the present invention preparation, compact structure have good stable and high selectivity.
4) the prepared patterned film of the present invention not only can effectively improve TiO
2The optical absorption intensity of nano thin-film, and enlarged the light absorption wavelength scope, thus the efficiency of light absorption of further enhanced film.Have broad application prospects at aspects such as solar cell, optoelectronic switch, opto-electronic conversion and optical storages.
Embodiment
Embodiment 1:
1) TiO
2The preparation of film: at first substrate of glass is immersed the absolute methanol solution of 5mM 3-aminopropyl triethoxysilane (APTS), assemble 3h under the room temperature, clean with absolute methanol, secondary water successively after the taking-up, and dry up with nitrogen; Get 0.06g Ti (SO then
4)
2, 0.058g H
2O
2Form precursor solution with water, and adjusting pH value is about 1.6; The substrate of glass that then surface is had APTS places this forerunner's liquid solution, 80 ℃ of deposition 20min.
2)-CH
3/-NH
2Constructing of-SAMs patterned surface: at first with the made TiO of step (1)
2Nano thin-film places the hexane solution of 5mM octadecyl trichlorosilane (OTS), assembles 1h under the room temperature, takes out the back and cleans with n-hexane, and dry up with nitrogen.The TiO that has OTS then on the surface
2Place mask and ultraviolet lighting 10min on the nano thin-film, in the process of illumination, the OTS SAMs of exposure area becomes hydroxyl, has obtained-OH/-CH
3The surface of SAMs patterning; To have again-OH/-CH
3The absolute methanol solution of 5mM 3-aminopropyl triethoxysilane (APTS) is put in the substrate of SAMs patterning, assembles 3h under the room temperature, promptly obtains-CH
3/-NH
2Constructing of-SAMs patterned surface.
3) Cu
2The preparation of S patterned film: with 0.125g CuSO
4.5H
2O, 0.279g EDTA is dissolved in the water of 50mL, forms transparent clear solutions, drips 1M H
2SO
4Regulating the pH value is 2.3, adds the Na of 0.124g then
2S
2O
3, after mixing, the substrate of patterning SAMs is put into 70 ℃ of depositions twice of this solution, each 1h.After the substrate taking-up, the flushing of secondary water, ultrasonic cleaning 5min dries up with nitrogen then, at last to Cu
2The S film is sintering processes under 300 ℃ of nitrogen protections.Can be at TiO
2The nano thin-film surface obtains patterning nanometer Cu
2The S film.
Embodiment 2:
1) TiO
2The preparation of film: at first substrate of glass is immersed the absolute methanol solution of 5mM 3-aminopropyl triethoxysilane (APTS), assemble 3h under the room temperature, clean with absolute methanol, secondary water successively after the taking-up, and dry up with nitrogen; Get 0.06g Ti (SO then
4)
2, 0.058g H
2O
2Form precursor solution with water, and adjusting pH value is about 1.6; The substrate that then surface is had APTS places this forerunner's liquid solution, 70 ℃ of deposition 1h.
2)-CH
3/-NH
2Constructing of-SAMs patterned surface:
Method is with example 1.
3) Cu
2The preparation of S patterned film: with 0.25g CuSO
4.5H
2O, 0.558g EDTA is dissolved in the water of 50mL, forms transparent clear solutions, drips 1M H
2SO
4Regulating the pH value is 2.0, adds the Na of 0.248g then
2S
2O
3, after mixing, the substrate of patterning SAMs is put into 70 ℃ of depositions twice of this solution, each 0.5h.After the substrate taking-up, the flushing of secondary water, ultrasonic cleaning 5min dries up with nitrogen then, at last to Cu
2The S film is sintering processes under 250 ℃ of nitrogen protections.
Embodiment 3:
1) TiO
2The preparation of film:
Method is with example 1.
2)-CH
3/-NH
2Constructing of-SAMs patterned surface:
Method is with example 1.
3) Cu
2The preparation of S patterned film: with 0.125g CuSO
4.5H
2O, 0.279g EDTA is dissolved in the water of 50mL, forms transparent clear solutions, drips 1M H
2SO
4Regulating the pH value is 1.5, adds the Na of 0.248g then
2S
2O
3, after mixing, the substrate of patterning SAMs is put into 70 ℃ of depositions twice of this solution, each 40 minutes.After the substrate taking-up, the flushing of secondary water, ultrasonic cleaning 5min dries up with nitrogen then, at last to Cu
2The S film is sintering processes under 300 ℃ of nitrogen protections.
Claims (1)
1. patterning preparation method of composite film that strengthens the titanium deoxid film light absorption is characterized in that step is as follows:
1) TiO
2The preparation of film: substrate of glass is immersed the absolute methanol solution of 3-aminopropyl triethoxysilane, assemble under the room temperature, clean with absolute methanol, secondary water successively after the taking-up, and dry up with nitrogen; Get Ti (SO then
4)
2, H
2O
2Form precursor solution with water, and adjusting pH value is about 1.6; The substrate of glass that then surface is had APTS places this forerunner's liquid solution, 70~80 ℃ of deposition 20~60min;
2)-CH
3/-NH
2Constructing of-SAMs patterned surface: with the made TiO of step (1)
2Nano thin-film places the hexane solution of octadecyl trichlorosilane, assembles under the room temperature, takes out the back and cleans with n-hexane, and dry up with nitrogen; The TiO that has OTS then on the surface
2Place mask and ultraviolet lighting on the nano thin-film, in the process of illumination, the OTS SAMs of exposure area becomes hydroxyl, has obtained-OH/-CH
3The surface of SAMs patterning; To have again-OH/-CH
3The absolute methanol solution of 3-aminopropyl triethoxysilane is put in the substrate of SAMs patterning, assembles under the room temperature, obtains-CH
3/-NH
2Constructing of-SAMs patterned surface;
3) Cu
2The preparation of S patterned film: step (2) substrate of patterning SAMs is put into the precursor solution that contains copper sulphate, sodium thiosulfate, EDTA, and regulating the pH value is 1~3,65-75 ℃ of deposition twice, each 0.5~1h; At last to Cu
2The S film is sintering processes under 200~300 ℃ of nitrogen protections, at TiO
2The nano thin-film surface obtains that pattern is complete, the patterning nanometer Cu of sharpness of border, compact structure
2The S film.
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CN2009101177455A CN102104086B (en) | 2009-12-18 | 2009-12-18 | Patterned composite film preparation method for reinforcing photo-absorption of titanium dioxide film |
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CN2009101177455A CN102104086B (en) | 2009-12-18 | 2009-12-18 | Patterned composite film preparation method for reinforcing photo-absorption of titanium dioxide film |
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CN102104086A true CN102104086A (en) | 2011-06-22 |
CN102104086B CN102104086B (en) | 2012-11-14 |
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Cited By (4)
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CN103881422A (en) * | 2014-03-21 | 2014-06-25 | 西南交通大学 | Light-operated switch type TiO2 nano-particles surfactant and preparation method thereof |
CN104195029A (en) * | 2014-08-06 | 2014-12-10 | 北京科技大学 | Functional micro-well chip for trace detection on nucleic acid molecules and preparation method of functional micro-well chip |
CN106477901A (en) * | 2015-08-31 | 2017-03-08 | 通用汽车环球科技运作有限责任公司 | Membranous system and forming method thereof |
CN108408830A (en) * | 2018-03-28 | 2018-08-17 | 福建省水产研究所(福建水产病害防治中心) | The device and method of degrading polycyclic aromatic hydrocarbons pollutant |
Family Cites Families (4)
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CN1215132C (en) * | 2002-09-25 | 2005-08-17 | 东南大学 | Self-assembly process for nano corrosion-proof film on the metal surface |
CN100480166C (en) * | 2003-09-28 | 2009-04-22 | 中国科学院化学研究所 | Nano composite inorganic semiconductor hollow ball and preparation method thereof |
CN1785683A (en) * | 2004-12-10 | 2006-06-14 | 中国科学院兰州化学物理研究所 | Preparation method of patterned titanium dioxide micro structure |
CN1949546A (en) * | 2006-11-10 | 2007-04-18 | 中国科学院上海硅酸盐研究所 | Method for preparing p type copper sulfide transparent conducting film |
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2009
- 2009-12-18 CN CN2009101177455A patent/CN102104086B/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103881422A (en) * | 2014-03-21 | 2014-06-25 | 西南交通大学 | Light-operated switch type TiO2 nano-particles surfactant and preparation method thereof |
CN103881422B (en) * | 2014-03-21 | 2015-04-22 | 西南交通大学 | Light-operated switch type TiO2 nano-particles surfactant and preparation method thereof |
CN104195029A (en) * | 2014-08-06 | 2014-12-10 | 北京科技大学 | Functional micro-well chip for trace detection on nucleic acid molecules and preparation method of functional micro-well chip |
CN106477901A (en) * | 2015-08-31 | 2017-03-08 | 通用汽车环球科技运作有限责任公司 | Membranous system and forming method thereof |
CN108408830A (en) * | 2018-03-28 | 2018-08-17 | 福建省水产研究所(福建水产病害防治中心) | The device and method of degrading polycyclic aromatic hydrocarbons pollutant |
CN108408830B (en) * | 2018-03-28 | 2024-07-23 | 福建省水产研究所(福建水产病害防治中心) | Device and method for degrading polycyclic aromatic hydrocarbon pollutants |
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