• 한국신재생에너지학회:학술대회논문집
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• 2005.06a
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• pp.201-204
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• 2005

In this research, we have studied the development of dc-dc converter suitable for the driving of mobile instruments by using a dye-sensitized solar cell(DSC). We also have designed a interlocking circuit. The circuit makes power from DSC be saved in one battery and concurrently be discharged in the other battery. As this application, mobile devices like MP3, cellular phone are drived by using power from DSC during the daytime and they can be drived by using the saving energy of the daytime during the night. Besides, we designed dc-dc converter circuit to drive low power instruments by using NMOS switch and PMOS rectifier.

• 한국신재생에너지학회:학술대회논문집
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• 2005.11a
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• pp.673-676
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• 2005

To design the effective usage of electric double layer capacitors (EDLCs) used for a storage device of dye sensitized solar cell(DSC) energy, we first investigated the accumulation state of electrical charges and the charge behavior in the EDLCs. Based on the results. the voltage characteristics of EDLCs connected to DSC energy were evaluated. The results showed that the charge accumulation region concentrated on central part of the carbonaceous electrode in EDLCs and the required times for charging and discharging were almost the same.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1469-1470
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• 2011

본 연구에서는 ZnO 입자 다중 성장을 이용하여 DSC를 제작하여 ZnO DSC의 가능성을 점검하고자 하였다. ZnO 입자 성장은 zinc acetate solution을 이용하여 seed layer를 제작한 후 zinc nitrate와 NaOH 혼합 용액에 다중성장 시킴으로써 완성되며 이를 이용하여 ZnO DSC를 제작하였다. 그 결과 ZnO가 입자형태로 얻어짐을 확인하고 ZnO DSC를 성공적으로 제작할 수 있었으며 ZnO 입자 성장 후 소성을 통해 ZnO DSC의 성능을 0.406%에서 1.385%까지 개선시킬 수 있었다.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.2059-2059
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• 2011

This study focused on the performance characteristics of dye-sensitized solar cell electrodes used in the IZO films were investigated. The experiment measured an sheet resistance and transmittance. Measured results showed 90% transmittance, sheet resistance also 18.3 ${\Omega}$/cm]. The results were indicated applications of dye-sensitized solar cell and optoelectronic devices, transparent electrodes.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.27 no.11
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• pp.725-729
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• 2014

In this study, a transparent conductive oxide (TCO)-less dye-sensitized solar cells (DSSCs) was fabricated by using titanium (Ti) electrode to replace the Fluorine-doped tin oxide (FTO) for the reduction of manufacturing cost. Ti film was formed by electron beam evaporation method and the results showed the sheet resistance of Ti electrodes with a thikness of 500 nm similar to FTO. In case of power conversion efficiency (PCE), a DSSC with Ti electrodes showed a lower value than that with FTO by 0.38%. For the investigation of the difference, the DSSCs were measured and analyzed by using electrochemical impedance analyzer (EIS).

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.26 no.10
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• pp.736-740
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• 2013

In this study, the influence of electrochemical properties by mixing Tetrabutylammonium hydroxide (TBAOH) and ammonium hydroxide (NH4OH) electrode on the dssc. The titanias were prepared using a sol-gel method by mixing Tetrabutylammonium hydroxide and Ammonium hydroxide. The $TiO_2$ nanopowder prepared by sol-gel methode, and to improve the distributed properties of $TiO_2$ nanopowder, the TBAOH and NH4OH was added. The I-V values of cells show that the Tetrabutylammonium has 6.51% efficiency.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.63 no.9
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• pp.1312-1316
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• 2014

The color and the installation position of the LED lamp for night voyage of the ship are changed by the purpose of it. The power dissipation occurs because a navigation light is on and off or continuously on. In addition, in case that the light is produced by operating generator in the ship, it's very inefficient except that it's on a voyage. Therefore in this dissertation, we construct auxiliary power system for the LED lamp of the ship, producing and developing a module, a panel, and a charging system using Dye-sensitize Solar Cell.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.11a
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• pp.230-231
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• 2006

In this paper, we examined effects by the binder in manufacturing titanium dioxide film for dye sensitized solar cell. Binder(PEG and PEO) was added the amount of 10-40wt% to commercial $TiO_2$ (P25), Respectively. All of $TiO_2$ film was showed porous structure owing to the addition of binders. But the difference of film's porosity could not be confirmed. The transmittance of $TiO_2$ film was decreased with the increase of binder's amount, generally. In case of 20wt%, however. The transmittance of $TiO_2$ films was showed the highest value.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.11a
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• pp.114-115
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• 2006

In the present study we investigated effects by changing binder contents m the carbon counter electrode for dye-sensitized solar cells. Binder contents changed for 6 wt%, 7 wt%, 8 wt% before making carbon electrode. In the result of the measurement the specific resistance for 6 wt% was lowest among others And the surface of the carbon electrode which was measured by SEM was best m the 6 wt"%. The electrode properties be showing in an experiment were due to increment of surface roughness that appeared the carbon electrode, which decreased internal surface area.

• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.21.2-21.2
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• 2011

에어로졸 데포지션(Aerosol deposition) 기술은 상온에서 초음속 유동을 통해 분사된 미세 입자가 기판에 충돌하면서 강력한 결합을 형성하는 방식으로 코팅이 이루어진다. 이 방법은 별도의 소결과정 없이 상온에서도 조밀하고 균일한 박막을 형성할 수 있다. 또한 세라믹, 금속 재질의 다양한 입자를 사용할 수 있을 뿐만 아니라 금속, 유리 기판등에 적용이 가능하다. 본 논문은 이러한 에어로졸 데포지션 기술을 이용하여 광촉매 효과가 뛰어난 $TiO_2$ 입자를 대면적 코팅에 적용가능한 초음속 노즐을 통해 분사하여 ITO기판 위에 박막을 형성하였다. $TiO_2$ 입자의 크기, 기판의 이송 속도와 왕복횟수, 공급 유량 등이 코팅면의 특성과 조성 등에 미치는 영향을 분석하였다. $TiO_2$ 박막층의 형상과 두께는 주사전자현미경(SEM)을 통해 확인하였고, X-ray diffraction (XRD)를 이용하여 코팅 입자와 박막 층의 조성을 각각 확인하였다. 에어로졸 데포지션을 이용한 $TiO_2$ 코팅층은 염료감응형 태양전지(DSSC), 자정작용(self-cleaning), 살균작용(antibacterial effect) 등의 적용분야에 적용 가능할 것으로 판단된다.