WO2009078682A2 - Film conducteur transparent et son procédé de préparation - Google Patents
Film conducteur transparent et son procédé de préparation Download PDFInfo
- Publication number
- WO2009078682A2 WO2009078682A2 PCT/KR2008/007524 KR2008007524W WO2009078682A2 WO 2009078682 A2 WO2009078682 A2 WO 2009078682A2 KR 2008007524 W KR2008007524 W KR 2008007524W WO 2009078682 A2 WO2009078682 A2 WO 2009078682A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- transparent conductive
- indium
- oxide
- metal
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000002184 metal Substances 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 71
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 243
- 238000000151 deposition Methods 0.000 claims description 34
- 239000011787 zinc oxide Substances 0.000 claims description 31
- 239000012535 impurity Substances 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 230000008021 deposition Effects 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- 229910052793 cadmium Inorganic materials 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052718 tin Inorganic materials 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 4
- 238000005234 chemical deposition Methods 0.000 claims description 3
- 238000005289 physical deposition Methods 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 abstract description 12
- 239000010409 thin film Substances 0.000 description 14
- 229910052738 indium Inorganic materials 0.000 description 11
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000000137 annealing Methods 0.000 description 6
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/816—Multilayers, e.g. transparent multilayers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
- G02F1/13629—Multilayer wirings
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
- G02F1/136295—Materials; Compositions; Manufacture processes
Definitions
- the present invention relates to a transparent conductive layer and a method of fabricating the same. More particularly, the present invention relates to a transparent conductive layer having a multilayer structure in which transparent oxide layers that do not include indium and metal layers are alternately stacked, and having a light transmittance of 80% or higher in a visible-ray region and a low sheet resistance of 5 Ohm/square or lower, and a method of fabricating the same.
- ITO Indium tin oxide
- indium tin oxide which is known as and is a representative material used for the transparent conductive layer
- a material in which zinc oxide (ZnO) is used as a main component and a trivalent ion such as indium is added is used for the transparent conductive layer. While such materials exhibit excellent transparency, they are inferior to metals in electrical conductivity.
- a transparent conductive layer having a structure of an oxide layer/a metal layer/an oxide layer has been developed.
- the oxide layer can refer to a transparent oxide thin film including ZnO together with In and Zn
- the metal layer can refer to a metal thin film whose main component is Ag.
- the transparency can be maintained, and simultaneously, electrical conductivity can be improved to nearly that of a metal.
- the present invention is directed to a transparent conductive layer that does not include indium, and has low resistance and high transmittance.
- the present invention is also directed to a method of fabricating a transparent conductive layer that does not include indium, and has low resistance and high transmittance.
- One aspect of the present invention provides a transparent conductive layer having a multilayer structure in which transparent oxide layers and metal layers are alternately stacked, wherein the transparent oxide layer is an indium-free oxide layer having zinc oxide (ZnO) as a main component, and the metal layer includes Ag.
- the transparent oxide layer is an indium-free oxide layer having zinc oxide (ZnO) as a main component
- the metal layer includes Ag.
- the transparent oxide layers may be formed of a ZnO layer that does not include impurities and/or may be formed of a ZnO layer that includes one or more elements selected from the group consisting of Al, Sn, Mg and Cd as an impurity.
- the metal layers may be a single layer including Ag or an Ag-based alloy or may be a multilayer including a layer formed of Ag or an Ag-based alloy and a layer formed of a metal other than Ag.
- the thickness of the transparent oxide layer may be selected within a range of 30 nm to 80 nm, and the thickness of the metal layer may be selected within a range of 5 nm to 20 nm.
- the transparent conductive layer may further include a buffer layer formed between the metal layer and the transparent oxide layer formed on the metal layer, and formed of a conductive oxide. Further, the buffer layer may be formed to a thickness of 1 nm to 3 nm.
- Another aspect of the present invention provides a method of fabricating a transparent conductive layer, including: depositing a first indium-free oxide layer whose main component is zinc oxide (ZnO) on a substrate; depositing a metal layer including Ag on the first indium-free oxide layer; and depositing a second indium-free oxide layer whose main component is ZnO on the metal layer, wherein the depositing of the first indium- free oxide layer and the depositing of the metal layer are repeated one or more times.
- ZnO zinc oxide
- the first and second indium- free oxide layers may be deposited with ZnO that does not include impurities or may be deposited with ZnO including one or more elements selected from the group consisting of Al, Sn, Mg and Cd as an impurity.
- the metal layers may be deposited with Ag or an Ag-based alloy or may be deposited with Ag or an Ag-based alloy, and then deposited with a metal other than Ag.
- the first and second indium- free oxide layers may be respectively deposited to a thickness of 30 nm to 80 nm, and the metal layers may be deposited to a thickness of 5 nm to 20 nm.
- Depositing a buffer layer formed of a conductive oxide to a thickness of 1 nm to 3 nm without oxygen supply may be further included during the depositing of the metal layer and the second indium-free oxide layer.
- the deposition may be performed using a physical deposition method, a chemical deposition method, or a combination thereof.
- the transparent conductive layer may be applied to an interconnection for a liquid crystal display (LCD), or a gate electrode, a source electrode, or a drain electrode of a thin film transistor.
- LCD liquid crystal display
- a transparent conductive layer according to the present invention readily realizes low resistance having a sheet resistance of 5 Ohm/square or lower without including indium and high transparency having a transmittance of 80% or higher in a visible-ray region, so that the layer may be applied in a display field in which transparency and large-scale area are required.
- a low resistance transparent electrode having different work functions may be fabricated, so that the transparent conductive layer can be applied in various fields such as an organic light emitting diode (OLED), an inorganic light emitting diode (LED), a photovoltaic cell, etc.
- the transparent conductive layer according to the present invention does not use indium, which is scarce as a rare metal, so that the layer is more economical.
- the transparent conductive layer according to the present invention may be formed at a low temperature, so that it may be formed on both a glass substrate and a plastic substrate.
- an etch rate can be controlled to enable the fine patterning.
- a work function can be controlled, so that the layer may be applied to an oxide conductor and a semiconductor that have various work functions.
- FIG. 1 is a cross-sectional view of a transparent conductive layer according to an exemplary embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a transparent conductive layer according to another exemplary embodiment of the present invention.
- FIG. 3 is a cross-sectional view of a transparent conductive layer according to still another exemplary embodiment of the present invention.
- FIG. 4 is a flowchart illustrating a method of fabricating a transparent conductive layer according to an exemplary embodiment of the present invention.
- FIG. 5 is a graph of sheet resistance vs. thickness of a metal layer in a transparent conductive layer according to an exemplary embodiment of the present invention.
- FIG. 6 is a graph of transmittance vs. thickness of a metal layer in a transparent conductive layer according to an exemplary embodiment of the present invention.
- FIG. 7 is a graph of transmittance vs. thickness of an oxide layer in a transparent conductive layer according to an exemplary embodiment of the present invention.
- FIG. 8 is a graph of sheet resistance vs. thickness of an oxide layer in a transparent conductive layer according to an exemplary embodiment of the present invention.
- the present invention provides a transparent conductive layer having a multilayer structure in which transparent oxide layers and metal layers are alternately stacked.
- the transparent oxide layer is an indium-free oxide layer, and the metal layer includes
- FIG. 1 is a cross-sectional view of a transparent conductive layer according to an exemplary embodiment of the present invention
- FIG. 2 is a cross-sectional view of a transparent conductive layer according to another exemplary embodiment of the present invention
- FIG. 3 is a cross-sectional view of a transparent conductive layer according to still another exemplary embodiment of the present invention.
- a transparent conductive layer according to the present invention has a structure of a substrate 10, an indium-free oxide layer 20, a metal layer 30, and an indium- free oxide layer 40 as illustrated in FIG. 1. Alternatively, as illustrated in FIG.
- the transparent conductive layer may have a structure of a substrate 10, an indium- free oxide layer 20, a metal layer 30, an indium-free oxide layer 40, a metal layer 50, and an indium-free oxide layer 60. Further, as illustrated in FIG. 3, the transparent conductive layer may have a structure of a substrate 10, an indium-free oxide layer 20, a metal layer 30, a buffer layer a, and an indium-free oxide layer 40.
- the substrate 10 may be formed of a silicon wafer, glass or plastic.
- the indium-free oxide layers 20, 40 and 60 may each be formed of zinc oxide (ZnO) that does not include impurities, or may be formed of an oxide whose main component is ZnO together with one or more elements selected from the group consisting of Al, Sn, Mg and Cd as an impurity.
- ZnO zinc oxide
- thicknesses of the indium-free oxide layers 20, 40 and 60 may be selected within a range of 30 nm to 80 nm, and more preferably, within a range of 40 nm to 50 nm.
- the metal layers 30 and 50 may be a single layer including Ag or an Ag-based alloy, or may be a multilayer including a layer formed of Ag or an Ag-based alloy and a layer formed of a metal other than Ag.
- thicknesses of the metal layers 30 and 50 may be selected within a range of
- the indium-free oxide layers 20, 40 and 60 play a decisive role in the transparency, and play a secondary role in the electrical conductivity. Moreover, the metal layers 30 and 50 play a major role in the electrical conductivity. Accordingly, the optimal transparency and electrical conductivity can be ensured by controlling the thicknesses of the indium-free oxide layers and the metal layers.
- ZnO constituting the indium- free oxide layers 20, 40 and 60 has a low electric resistance, its thin film formation is performed at a low temperature, and it may replace indium, an expensive and rare metal, so that it may be more economical.
- ZnO is inferior to indium-tin-oxide (ITO) in terms of electrical conductivity, and an oxide layer formed of ZnO is vulnerable to an etchant.
- the indium- free oxide layers 20, 40 and 60 are formed of ZnO as a main component, and Sn, a tetravalent element, is added as impurities, the layers may be adjusted to have enhanced electrical conductivity, and simultaneously, to have durability suitable for an etching process.
- the indium- free oxide layers 20, 40 and 60 are formed of ZnO as a main component, and Mg and Cd are added as impurities, a work function can be adjusted.
- a work function can be adjusted, so that applicable fields can be broadened.
- a transparent conductive layer having a low work function may be applied to an anode or cathode in an organic light emitting diode or inorganic light emitting diode.
- the work function of the transparent conductive layer is adjusted to facilitate the constitution of the ohmic or schottky contact when the layer is in contact with other metals or a semiconductor.
- the indium-free oxide layer whose main component is ZnO in the transparent conductive layer according to the present invention is etched faster than an indium-tin oxide layer. Accordingly, since there is a slight difference in etch rate between the metal layers containing Ag, the indium-free oxide may be more easily etched than the indium-tin oxide to enable fine patterning by dry etching and wet etching.
- the transparent conductive layer according to the present invention includes the buffer layer a between the metal layer 30 and the indium- free oxide layer 40.
- the buffer layer is introduced to prevent exposure of the metal layer 30 to oxygen plasma.
- the buffer layer a may be formed of a conductive oxide, and may be deposited to be formed without oxygen supply when it is deposited.
- a thin film should be formed using only oxygen of the target oxide.
- the thickness that minimizes deteriorated quality and a reduction in transparency of the thin film may be within a range of 1 nm to 3 nm.
- FIG. 4 is a flowchart illustrating a method of fabricating a transparent conductive layer according to an exemplary embodiment of the present invention.
- the method of fabricating a transparent conductive layer according to the present invention includes: (a) depositing a first indium-free oxide layer on a substrate; (b) depositing a metal layer including Ag on the first indium-free oxide layer; and (c) depositing a second indium-free oxide layer on the metal layer, wherein depositing the metal layer and depositing the second indium-free oxide layer may be repeated one or more times.
- the layer may be deposited with only ZnO or using ZnO together with one or more elements selected from the group consisting of Al, Sn, Mg and Cd as an impurity, and may be deposited to a thickness of about 30 nm to 80 nm.
- the layer may be deposited to have a single layer using Ag or an Ag-based alloy or a multilayer including a layer formed of Ag or an Ag-based alloy and a layer formed of a metal other than Ag, and may be deposited to a thickness of about 5 nm to 20 nm.
- a buffer layer Before the deposition of the indium-free transparent oxide layer of (c), depositing a buffer layer may be further included in order to prevent the metal layer from being exposed to oxygen.
- the deposition of the buffer layer is performed using a conductive oxide material such as an indium-free oxide layer without oxygen supply. Therefore, the indium-free oxide layer may be deposited to form the buffer layer without oxygen supply, and afterwards, the indium- free oxide layer may be deposited with oxygen supplied. In this case, the buffer layer is formed without oxygen supply, and thus crystal defects of the thin layer may be formed. Therefore, the buffer layer may be deposited to a thickness of 1 nm to 3 nm.
- the deposition of the indium-free oxide layer of (c) may be performed using only ZnO or using ZnO together with one or more elements selected from the group consisting of Al, Sn, Mg and Cd as an impurity, and the layer may be deposited to a thickness of about 30 nm to 80 nm.
- the deposition of the metal layer of (b) and the deposition of the indium- free oxide layer of (c) may be repeated such that the total thickness of the transparent conductive layer does not exceed 200 nm.
- each layer may be performed using a physical deposition method including a sputtering method and a PLD method, a chemical deposition method including an atomic layer deposition (ALD), and a Metal Organic Chemical Vapor Deposition (MOCVD), or a combination thereof.
- the deposition may be performed at room temperature.
- an annealing process may be performed at a temperature of 300 0 C or lower, and the annealing process may further enhance sheet resistance and transmittance.
- the transparent conductive layer according to the present invention may be used for a gate electrode, a source electrode, or a drain electrode of a thin film transistor as well as an interconnection for a liquid crystal device (LCD).
- LCD liquid crystal device
- the oxide layer of the transparent conductive layer according to the present invention is similar to the semiconductor layer of the thin film transistor, so that it can contribute to fabrication of a transparent oxide thin film transistor having excellent characteristics.
- An organic light emitting diode has numerous applications such as a light with an appearance of wallpaper as well as a display.
- ITO has higher electrical resistance than a metal, and requires an annealing process performed at a temperature of about 200 0 C, selection of substrate materials is limited, and this poses an obstacle to a large-scale light.
- the transparent conductive layer according to the present invention in which an electrical resistance is lower than ITO, a thin film formation temperature is low to have wide selections of plastic substrates, and In is not included to be low in price of materials may be applied to an anode, a cathode or an interconnection of an organic light emitting diode.
- the transparent conductive layer according to the present invention may be applied to an anode, a cathode or an interconnection of an inorganic light emitting diode, and may be used as an electrode of a photovoltaic cell.
- a sputtering device to which a sputtering chamber including ZnO and a sputtering chamber including Ag were connected was used to deposit a first ZnO layer on a substrate to a thickness of 40 nm at room temperature under oxygen plasma, and an annealing process was performed on the deposited results.
- an Ag layer was deposited on the ZnO layer to a thickness of 10.0 nm at room temperature and an annealing process was performed on the deposited results.
- a second ZnO layer was deposited on the Ag layer to a thickness of 40 nm at room temperature under oxygen plasma, and an annealing process was performed on the deposited results to fabricate a transparent conductive layer.
- Transparent conductive layers were fabricated in the same manner as the first example except for depositing Ag layers to thicknesses of 5.0 nm, 7.5 nm, 12.5 nm, 15.0 nm, 17.5 nm and 20.0 nm, respectively.
- Transparent conductive layers were fabricated in the same manner as the first example except for depositing first and second ZnO layers to thicknesses of 20 nm, 30 nm, and 50 nm, respectively.
- Sheet resistance of the transparent conductive layers fabricated in the first to seventh examples was examined and the results thereof were shown in FIG. 5. Further, transmittance of the transparent conductive layers fabricated in the second to seventh examples was examined, and the results thereof were shown in FIG. 6.
- the metal layer having a thickness ranging from 5 nm to 20 nm may be used as a transparent conductive layer, and more preferably, the metal layer may have a thickness of about 10 nm.
- the thickness of the oxide layer is proportional to the sheet resistance and the transmittance.
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Abstract
L'invention concerne un film conducteur transparent et son procédé de fabrication. Ce film conducteur transparent comprend une structure multicouche dans laquelle des couches d'oxyde transparentes et des couches métalliques sont empilées par alternance, la couche d'oxyde transparente étant une couche d'oxyde sans indium constituée d'oxyde de zinc (ZnO) en tant que composant principal, et la couche métallique étant constituée d'Ag en tant que composant principal. Le film conducteur transparent présente une propriété de transparence élevée avec une capacité de transmission de lumière supérieure ou égale à 80% dans une région de rayonnement visible, et une faible résistance avec une résistance de couche de 5 Ohms/carré, de façon à pouvoir être utilisé dans de nombreuses applications, notamment dans le domaine de l'affichage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2007-0133477 | 2007-12-18 | ||
KR20070133477 | 2007-12-18 |
Publications (2)
Publication Number | Publication Date |
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WO2009078682A2 true WO2009078682A2 (fr) | 2009-06-25 |
WO2009078682A3 WO2009078682A3 (fr) | 2009-10-08 |
Family
ID=40796038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2008/007524 WO2009078682A2 (fr) | 2007-12-18 | 2008-12-18 | Film conducteur transparent et son procédé de préparation |
Country Status (2)
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KR (1) | KR20090066245A (fr) |
WO (1) | WO2009078682A2 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013167270A1 (fr) * | 2012-05-08 | 2013-11-14 | Agc Glass Europe | Dispositif photonique organique |
US10647089B2 (en) | 2015-03-16 | 2020-05-12 | Lg Chem, Ltd. | Conductive structure and electronic device comprising same |
CN115411205A (zh) * | 2021-05-28 | 2022-11-29 | 曜凌光电股份有限公司 | 发光装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101051662B1 (ko) * | 2009-03-27 | 2011-07-26 | 한국과학기술원 | 휨 특성이 뛰어난 투명 전도막, 및 그것을 이용한 투명 전극 및 유기 전자 소자 |
KR20120053480A (ko) | 2010-11-17 | 2012-05-25 | 주식회사 엘지화학 | 산화막이 형성된 도전성 필름 및 그 제조방법 |
KR20140058892A (ko) * | 2012-11-07 | 2014-05-15 | 삼성정밀화학 주식회사 | 코어-쉘 구조를 갖는 나노와이어를 적용한 투명 복합전극 및 그의 제조방법 |
KR102404187B1 (ko) * | 2020-02-27 | 2022-06-02 | 숭실대학교산학협력단 | 투명 복합산화물 구조의 전극배선 및 이를 포함하는 액정 표시 장치 |
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US20030085649A1 (en) * | 2001-07-23 | 2003-05-08 | Asahi Glass Company, Limited | Flat display panel |
US20070224432A1 (en) * | 2004-11-30 | 2007-09-27 | Asahi Glass Company, Limited | Electroconductive laminate, and electromagnetic wave shielding film and protective plate for plasma display |
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JPH08104547A (ja) * | 1994-08-01 | 1996-04-23 | Nippon Sheet Glass Co Ltd | 断熱ガラス |
JP3684720B2 (ja) * | 1995-12-27 | 2005-08-17 | 旭硝子株式会社 | 液晶ディスプレイ用透明導電基板および透明電極形成方法 |
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- 2008-12-18 WO PCT/KR2008/007524 patent/WO2009078682A2/fr active Application Filing
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US4859532A (en) * | 1986-11-27 | 1989-08-22 | Asahi Glass Company Ltd. | Transparent laminated product |
US5346770A (en) * | 1991-02-14 | 1994-09-13 | Asahi Glass Company Ltd. | Laminated glass structure |
US5763064A (en) * | 1995-06-26 | 1998-06-09 | Asahi Glass Company Ltd. | Laminate |
US6452331B1 (en) * | 1996-09-26 | 2002-09-17 | Asahi Glass Company, Ltd. | Protective plate for a plasma display and a method for producing the same |
US20020086164A1 (en) * | 1999-04-06 | 2002-07-04 | Nippon Sheet Glass Co., Ltd. | Light transmitting electromagnetic wave filter and process for producing the same |
US20030085649A1 (en) * | 2001-07-23 | 2003-05-08 | Asahi Glass Company, Limited | Flat display panel |
US20070224432A1 (en) * | 2004-11-30 | 2007-09-27 | Asahi Glass Company, Limited | Electroconductive laminate, and electromagnetic wave shielding film and protective plate for plasma display |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013167270A1 (fr) * | 2012-05-08 | 2013-11-14 | Agc Glass Europe | Dispositif photonique organique |
BE1020676A3 (fr) * | 2012-05-08 | 2014-03-04 | Agc Glass Europe | Dispositif photonique organique. |
US9397304B2 (en) | 2012-05-08 | 2016-07-19 | Agc Glass Europe | Organic photonic device |
EA028689B1 (ru) * | 2012-05-08 | 2017-12-29 | Агк Гласс Юроп | Органическое электролюминесцентное устройство |
US10647089B2 (en) | 2015-03-16 | 2020-05-12 | Lg Chem, Ltd. | Conductive structure and electronic device comprising same |
CN115411205A (zh) * | 2021-05-28 | 2022-11-29 | 曜凌光电股份有限公司 | 发光装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20090066245A (ko) | 2009-06-23 |
WO2009078682A3 (fr) | 2009-10-08 |
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