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레이저 웰딩 기술을 이용한 ECL용 유리 기판 접합에 대한 고찰
성열문(Youl-Moon Sung) 한국조명·전기설비학회 2015 조명·전기설비학회논문지 Vol.29 No.12
In this work, we reported fabrication of sealing the glass substrate using laser treatment at low temperature for electrochemical luminescence (ECL) cell. The laser treatment at temperature is using laser diode. The glass substrate sealing by laser treatment tested at 3-10W, 2-5 mm/s for build and tested. The sealing laser treatment method will allow associate coordination between the two glass substrate was enclosed. The effect of laser treatment to sealing the glass substrate was found to have cracks and air gap at best thickness of about 550-600 im for condition 3 W, 3 mm/s. The surface of sealing was roughness which was not influent to electrodes It can reduce the cracks, crevices and air gaps as well, improves the performance viscosity in butter bus bar electrodes. Therefore, it is more effective viscosity between two FTO glasses substrate.
자기중성선방전 시스템의 최적 플라즈마 생성조건에 관한 고찰
성열문(Youl-Moon Sung) 대한전기학회 2009 전기학회논문지 Vol.58 No.11
In this study, the electron behavior was investigated numerically in order to obtain guidelines for design and operation of a new plasma source by a magnetic neutral loop discharge (NLD). The optimum plasma production was investigated by using a 3-dimensional simulation model which enables the electron behavior calculation from source region to downstream region. The results showed that the high-density plasma produced around the magnetic neutral loop (NL) is transferred from the NL region to the downstream region along magnetic force lines. Also the avaraged electron energy is increased with the normalized RF electric field (F), which can be used to characterize the plasma production efficiency of NLD system. Considering the relation between F and plasma production, in-depth plasma control can be achieved at a given specific process condition.
팽성환(Sung-Hwan Paeng),최우진(Woo-Jin Choi),곽동주(Dong-Joo Kwak),성열문(Youl-Moon Sung) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.9월
Transparent conductive metal oxide films of In<SUB>2-x</SUB>Ti<SUB>x</SUB>O₃ (ITiO) and In<SUB>2-x</SUB>Sn<SUB>x</SUB>O₃ (ITO) were deposited by RF magnetron sputtering at substrate temperature of 300℃ and at high rate (~10㎚/min). Electrical and optical properties of the films were investigated as well as film structure and morphology, as it is compared with the commercial F:SnO₂ (FTO) glass. Near infrared ray transmittance of ITiO is the highest for wavelengths over 1000㎚, which can increase dye sensitized compared to ITiO and FTO. Dye-sensitized solar cells (DSCs) were fabricated using the ITiO, ITO and FTO. Photoconversion efficiency (?) of DSC using ITiO is 5.5%. whereas 5.0% is obtained from DSC with ITO. both at 100 ㎽/㎠ light intensity.
나노 다공질 타이타늄 박막의 스퍼터 증착과 광전변환 특성
팽성환(Sung-Hwan Paeng),박민우(Min-Woo Park),성열문(Youl-Moon Sung) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
Ti-layer was deposited onto TiO₂ nanopartcles layer by RF magnetron sputtering in 500㎚ thickness. The transparent conductive oxide (TCO) layer was replaced by the high porosity Ti thin film. Thus TCO-less dye-sensitized solar cells (DSCs) sample was fabricated. The porous Ti layer with high conductivity can collect electrons from the TiO₂ layer and allows the ionic diffusion of I?/I₃?to the dye molecules through the holes in Ti thin film. The effeciency of as-fabricated TCO-less DSCs is 3.73% (Voc:0.68V, Jsc:9.61mA/㎠. FF:0.58).
팽성환(Sung-Hwan Paeng),곽동주(Dong-Joo Kwak),성열문(Youl-Moon Sung),이명희(Myung-Hee Lee) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
In this study, SUS-Mesh replaced high-cost transparent conductive oxide (TCO) layer. To improve conversion-efficiency of dye-sensitized solar cells (DSCs), SUS-Mesh was also coated with Al2O₃ and SiO₂. In result, the conversion-efficiency of DSC coated with Al₂O₃ by sol-gel method was 1.68% (Jsc:9.27㎃/㎠, Voc:0.73V, ff:0.24). This result had higher efficiency (0.3%) than non-coated DSC. The short-circuit current density (Jsc) also improved considerably, however, the DSC coated with Al₂O₃ by sol-gel had low fill factor.