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公开(公告)号：KR1020160056971A
公开(公告)日：2016-05-23
申请号：KR1020140156852
申请日：2014-11-12
Applicant: 서울대학교산학협력단
CPC classification number: B01J21/18 , B01J21/185 , B01J35/00 , B01J37/02 , B01J37/0217 , B01J37/08
Abstract: 본발명은그래핀양자점이결합된그래핀시트의제조와가시광에반응하는광촉매로서의응용에관한것으로, 아마이드 (-CONH-) 결합을통한그래핀양자점과그래핀시트가결합된복합체로서, 상기물질을제조하는방법을제공하며, 광촉매로이용되었을경우가시광하에서높은효율을나타내므로차세대광촉매로의응용가능성을제시하였다. 본발명에따르면, 그래핀양자점에강한전자저장능력을가지는그래핀의도입을통해가시광영역에서의높은활성과그래핀양자점의재결합을막음으로써종래의기술에따른광촉매물질에비해가시광선하에서현저히우수한광촉매효율을가지는그래핀양자점이결합된그래핀시트복합체를제공하는데 있다.
Abstract translation: 石墨烯量子点组合石墨烯片的制造方法及其与可见光反应的光催化剂的应用本发明涉及石墨烯量子点组合石墨烯片的制造方法及其与可见光反应的光催化剂的应用，提供了其中石墨烯量子点和石墨烯片通过酰胺（ - CONH）键，并提出作为下一代光催化剂的应用可能性，因为在使用石墨烯片作为光催化剂的情况下，在可见光下可以获得高效率。 根据本发明，提供了通过在可见光区域获得高活性并且通过引入具有强电子的石墨烯来防止石墨烯量子点的复合，在石墨烯量子点中结合石墨烯量子点并且在可见区域具有非常好的光催化剂效率的石墨烯片复合材料 与根据常规技术的光催化剂材料相比，在石墨烯量子点中的存储能力。
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公开(公告)号：KR1020140007113A
公开(公告)日：2014-01-17
申请号：KR1020120073776
申请日：2012-07-06
Applicant: 서울대학교산학협력단
IPC: H01L31/042 , H01L31/18
CPC classification number: Y02E10/542 , Y02P70/521 , H01L31/18 , H01L31/042
Abstract: The present invention relates to a method for producing FRET-based dye-sensitized solar cells using water-dispersible quantum dots as donors to fluorescence resonance energy transition phenomenon (FRET), in particular, to a method for producing FRET-based dye-sensitized solar cells including water-dispersible quantum dots presenting high conversion efficiency and improved light sensitivity in a wide wavelength range of sunlight by introducing dye and FRET phenomenon between quantum dots and the dye after introducing quantum dots stabilized by citrate (citrate) ligands on the surface of the quantum dots to the titanium dioxide / FTO (Fluorine-doped Tin Oxide) electrodes. According to the present invention, the method has the advantage of expressing into the optimum environment FRET by freely adjusting the amount of water-dispersible quantum dots introduced to the emission wavelength range and the layer of nano-porous titanium dioxide. In addition, the method improves the contact between donor and acceptor by introducing water-dispersible quantum dots into the layer of nano-porous titanium dioxide to markedly enhance dispersibility. The present invention simplifies the process since the hydrophobic ligand substitution step, which was added when there was a problem in the previous approach method, is not necessary, and prevents fluorescent energy from reducing during the ligand substitution processes. [Reference numerals] (AA) Electrolyte; (BB) Quantum dot; (CC) Titanium dioxide; (DD) N719 dye
Abstract translation: 本发明涉及使用水分散性量子点作为荧光共振能量转换现象（FRET）的供体来生产基于FRET的染料敏化太阳能电池的方法，特别涉及一种生产基于FRET的染料敏化太阳能 通过在引入由柠檬酸盐（柠檬酸盐）配体稳定的量子点的量子点和染料之间引入染料和FRET现象，在宽的波长范围的阳光中呈现高转换效率和改善的光灵敏度的电池，其包括水分散性量子点 量子点到二氧化钛/ FTO（氟掺杂的氧化锡）电极。 根据本发明，该方法具有通过自由调节引入发射波长范围的水分散性量子点的量和纳米多孔二氧化钛层而在最佳环境FRET中表达的优点。 此外，该方法通过将水分散性量子点引入纳米多孔二氧化钛层来显着增强分散性，从而改善了供体与受体之间的接触。 本发明简化了方法，因为当在先前的方法中存在问题时添加的疏水性配体取代步骤是不必要的，并且在配体取代过程中防止荧光能量降低。 （附图标记）（AA）电解质; （BB）量子点; （CC）二氧化钛; （DD）N719染料
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公开(公告)号：KR101440676B1
公开(公告)日：2014-09-17
申请号：KR1020120073776
申请日：2012-07-06
Applicant: 서울대학교산학협력단
IPC: H01L31/042 , H01L31/18
CPC classification number: Y02E10/542 , Y02P70/521
Abstract: 본 발명은 수분산성 양자점을 형광공명 에너지전이 현상(FRET)의 도너(donor)로 사용하여 FRET 기반의 염료감응 태양전지의 제조방법에 관한 것으로, 양자점 표면에 시트레이트(citrate) 리간드에 의하여 안정화된 양자점을 이산화티타늄/FTO(Fluorine-doped Tin Oxide) 전극에 도입한 후, 염료를 도입하여 양자점과 염료 상호 간의 FRET 현상에 의하여 넓은 태양광의 파장영역에서 향상된 빛 감응과 높은 전환효율을 보이는 수분산성 양자점을 포함한 FRET-기반의 태양전지의 제조방법에 관한 것이다.
본 발명에 따르면, 수분산성 양자점의 발광파장 영역대와 나노다공성 이산화티타늄 층에 도입되는 양을 자유롭게 조절하여 최적의 FRET 환경을 구현할 수 있다는 장점이 있다. 뿐만 아니라, 수분산성 양자점을 나노다공성 이산화티타늄 층 내에 도입하여 분산성을 현저히 향상시켜 도너와 억셉터간의 접촉을 향상시켰으며, 이전의 접근 방법에서 문제 시 되었던 추가적인 소수성 리간드의 치환 단계가 필요 없으므로 공정을 단순화시켰고, 리간드 치환 공정 시 발생하는 양자점의 형광 에너지의 감소현상을 방지할 수 있었다.-
Patent Agency Ranking
公开(公告)号：KR101420983B1
公开(公告)日：2014-07-16
申请号：KR1020130087173
申请日：2013-07-24
Applicant: 서울대학교산학협력단
CPC classification number: B01J37/08 , B01J21/063 , B01J23/50 , B01J35/004 , B82B3/0095
Abstract: The present invention relates to a fabrication of a titanium dioxide nanoparticle in which a silver nanoparticle and a graphene quantum dot are combined and an application of the titanium dioxide nanoparticle as a photocatalyst responsive to visible light, and provides a method fabricating the nanoparticle as a titanium dioxide nanoscale composite through a reduction of a silver ion and a combination with a graphene quantum dot via a hydrothermal synthesis reaction. Also, since the present invention represents a high efficiency under visible light when used as a photocatalyst, the invention suggests applicability of the titanium dioxide nanoparticle as a next-generation photocatalyst. The present invention provides a titanium dioxide nanoscale composite into which a graphene quantum dot and a silver nanoparticle are introduced. The titanium dioxide nanoscale composite has significantly superior photocatalytic efficiency under visible light due to a high activity and a slow recombination rate under visible light region through an introduction of the graphene quantum dot with an up-conversion property and the silver nanoparticle with a strong electron storage capacity, when compared to photocatalyst particles according to a conventional art.
Abstract translation: 本发明涉及二氧化钛纳米颗粒的制造，其中银纳米颗粒和石墨烯量子点被组合，并且二氧化钛纳米颗粒作为响应于可见光的光催化剂的应用，并且提供了制造纳米颗粒作为钛的方法 通过还原银离子和通过水热合成反应与石墨烯量子点的组合来制备二氧化钛纳米级复合材料。 此外，由于本发明在用作光催化剂时在可见光下表现出高效率，因此本发明提出二氧化钛纳米颗粒作为下一代光催化剂的适用性。 本发明提供了引入石墨烯量子点和银纳米颗粒的二氧化钛纳米级复合物。 二氧化钛纳米复合材料在可见光下具有显着优异的光催化效率，因为通过引入具有向上转换特性的石墨烯量子点和具有强电子存储的银纳米颗粒，在可见光区域具有高活性和缓慢的复合速率 当与根据常规技术的光催化剂颗粒相比时，
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公开(公告)号：KR101290956B1
公开(公告)日：2013-07-30
申请号：KR1020110137590
申请日：2011-12-19
Applicant: 서울대학교산학협력단
IPC: C01B31/02 , C01G23/047 , B01J19/10 , B01J14/00
Abstract: 본 발명은 이산화티타늄 나노로드가 결합된 그래핀 시트의 제조와 가시광에 반응하는 광촉매로서의 응용에 관한 것으로, 비가수분해 졸-겔 반응을 통하여 산화 그래핀 층위에 이산화티타늄 나노로드를 성장시키는 방법을 제공하며, 광촉매로 이용 하였을 경우 가시광 하에서 높은 효율을 나타내므로 차세대 광촉매로의 응용 가능성을 제시하였다.
본 발명에 따르면, 올레일 아민 용액에 분산된 산화 그래핀에 이산화티타늄전구체의 도입은 비가수분해 졸-겔 반응을 유도하며, 추가적인 과정 없이 공정상 간편하게 이산화티타늄 나노로드와 그래핀 시트가 결합할 수 있는 장점을 가진다. 더욱이, 이산화티타늄 전구체의 농도를 바꿈으로써 그래핀 시트 위의 이산화티타늄 밀도를 용이하게 조절할 수 있다. 이렇게 제조된 균일한 이산화티타늄 나노로드가 결합된 그래핀 시트는 가시광선 하의 광촉매 작용에서도 상업화된 이산화티타늄 입자보다 우수한 성능을 보였다.-
公开(公告)号：KR1020130070327A
公开(公告)日：2013-06-27
申请号：KR1020110137590
申请日：2011-12-19
Applicant: 서울대학교산학협력단
IPC: C01B31/02 , C01G23/047 , B01J19/10 , B01J14/00
CPC classification number: C01B32/184 , B01J19/10 , B01J21/063 , B82B3/0009 , C01B2204/28
Abstract: PURPOSE: A manufacturing method of a graphene sheet, which is combined with titanium dioxide nanorods, and an application as a photocatalyst response to visible light is provided to remarkably reduce problems of combining in a limited area by using a non-hydrolysis sol-gel method. CONSTITUTION: A manufacturing method of a graphene sheet, which is combined with titanium dioxide nanorods comprises the following step; a graphene oxide solution dispersed in oleoylamine is manufactured by dispersing a graphite oxide to oleylamine using an ultrasonic generator; titanium chloride which is a titanium dioxide precursor is inserted to the graphene oxide solution dispersed in oleoylamine, and produces the graphene sheet which is combined with the titanium dioxide in a nanorod form; after the graphene sheet which is combined to titanium dioxide nanorods is dried, the graphene sheet heat-treated to induce the high crystallization of the titanium dioxide and the deoxidation of the graphene oxide.
Abstract translation: 目的：提供与二氧化钛纳米棒结合的石墨烯片的制造方法以及作为对可见光的光催化剂反应的应用，通过使用非水解溶胶 - 凝胶法显着降低有限区域的组合问题 。 构成：与二氧化钛纳米棒结合的石墨烯片的制造方法包括以下步骤： 通过使用超声波发生器将分散在油酰胺中的石墨烯氧化物溶液分散到油胺中来制造; 将作为二氧化钛前体的氯化钛插入到分散在油酰胺中的氧化石墨烯溶液中，并生成与二氧化钛纳米棒结合的石墨烯片; 在将二氧化钛纳米棒组合的石墨烯片干燥后，对石墨烯片进行热处理，以引起二氧化钛的高结晶度和氧化石墨烯的脱氧。
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公开(公告)号：KR101430361B1
公开(公告)日：2014-08-13
申请号：KR1020130067021
申请日：2013-06-12
Applicant: 서울대학교산학협력단
CPC classification number: C01B32/194 , B82Y15/00
Abstract: The present invention relates to manufacturing a graphene quantum dot, and provides a method for manufacturing the same by manufacturing a graphene oxide on which sulfate ion is coupled on the surface, and using a difference in sedimentation velocity according to the size of the graphene which results from a formation of sodium sulfate in an empty solvent. The method of the present invention provides benefits in that the graphene dot can be manufactured fast, simply, and economically through a centrifugal separation method without using a dialysis method. Moreover, the graphene quantum dot that can be manufactured in the present invention is capable of being separated and manufactured according to the size and shape of the graphene quantum dot.
Abstract translation: 本发明涉及石墨烯量子点的制造，并且通过制造其上表面具有硫酸根离子的氧化石墨烯，并根据石墨烯的尺寸使用沉降速度的差异来提供其制造方法 从空溶剂中形成硫酸钠。 本发明的方法提供的益处在于，通过离心分离方法可以快速，简单和经济地制造石墨烯点，而不使用透析法。 此外，本发明中可以制造的石墨烯量子点能够根据石墨烯量子点的尺寸和形状进行分离和制造。
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公开(公告)号：KR1020140007112A
公开(公告)日：2014-01-17
申请号：KR1020120073761
申请日：2012-07-06
Applicant: 서울대학교산학협력단
IPC: H01L31/042 , H01L31/0224 , H01L31/18
CPC classification number: Y02E10/542 , Y02P70/521 , H01L31/042 , H01L31/0224 , H01L31/18
Abstract: The present invention relates to a dye-sensitized solar cell including patterned metal counter electrodes and a manufacturing method thereof. The dye-sensitized solar cell is manufactured by increasing the surface area simply by sputtering metal on a silicon wafer on which 30 nanometer patterns are formed. According to the present invention, as the surface area of a metal catalyst layer increases, electrodes for a dye-sensitized solar cell provide a sufficient surface area between the electrode and an electrolyte to activate ion exchange. As a result, the present invention can have high photoelectric conversion efficiency higher than an existing dye-sensitized solar cell. Furthermore, it is possible to easily form 30 nanometer fine metal patterns by sputtering metal on a silicon waver with patterns.
Abstract translation: 本发明涉及包含图案化金属对电极的染料敏化太阳能电池及其制造方法。 染料敏化太阳能电池是通过在形成30纳米图案的硅晶片上通过溅射金属来增加表面积来制造的。 根据本发明，随着金属催化剂层的表面积增加，用于染料敏化太阳能电池的电极在电极和电解质之间提供足够的表面积，以激活离子交换。 结果，本发明可以具有比现有的染料敏化太阳能电池高的光电转换效率。 此外，通过在具有图案的硅摇摆上溅射金属可以容易地形成30纳米的细金属图案。
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