• Title/Summary/Keyword: Dopant Paste

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Analysis of Selective Emitter Properties Apply for Low Cost Metallization in Crystalline Silicon Solar Cells (결정질 실리콘 태양전지의 저가형 금속전극에 적용되기 위한 Selective emitter 특성 분석)

  • Kim, Min-Jeong;Lee, Ji-Hun;Cho, Kyeong-Yeon;Lee, Soo-Hong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2009.06a
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    • pp.454-455
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    • 2009
  • Selective emitter structure have an important research subject for crystalline silicon solar cells because it is used in production for high efficiency solar cells. A selective emitter structure with highly doped regions underneath the metal contacts is widely known to be one of the most promising high-efficiency solution in solar cell processing. Since most of the selective emitter processes require expensive extra masking and double steps process. Formation of selective emitters is not cost effective. One method that satisfies these requirements is the method of screen-printing with a phosphorus doping paste. In this paper we researched two groups of selective emitter structure process. One was using dopant paste, and the other was using solid source, in order to compare their uniformity, sheet resistance and performance condition time.

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Analysis of n+ emitter properties using Dopant Pastes for Crystalline Silicon Solar Cells (결정질 실리콘 태양전지에 적용하기 위한 Dopant Pastes의 n+ emitter 특성 분석)

  • Lee, Ji-Hun;Cho, Kyeong-Yeon;Choi, Jun-Young;Lee, Soo-Hong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.11a
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    • pp.15-16
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    • 2007
  • The high efficiency and low cost solar cells in order to it applied a dopant pastes diffusion process. The dopant pastes diffusion process which it uses is easily applied in screen-printing solar cells output line. in this paper, it used the Ferro 99-038 phosphorus diffusion pastes source and it analyzed a sheet resistance and a uniformity degree. And it knew the quality of the sheet resistance which it follows in temperature and time condition. The temperature variable it let and it fixed the time in 7 minutes. It will be able to measure the sheet resistance of $40({\Omega}/sq),\;30({\Omega}/sq),\; 20({\Omega}/sq)$. also average uniformity of the sheet resistance was below 5%.

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Fabrication and Characteristics of Organic EL Devices using Conducting Polymer as an Electrode (전도성 고분자를 전극으로 한 유기 전기발광 소자의 제작 및 특성)

  • Lee, Kwang-Youn;Kim, Young-Kwan;Kwon, Oh-Kwan;Sohn, Byoung-Chong;Kim, Ok-Byoung
    • Journal of the Korean Applied Science and Technology
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    • v.16 no.4
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    • pp.323-327
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    • 1999
  • A water-soluble conducting polymer (CPP400 Paste) containing a derivative of polythiophene with several dopant was investigated as an anode material for organic electroluminescent devices. The device of ITO/CPP 400 Paste/TPD/$Alq_3$/Li:Al was fabricated, where CPP 400 Paste films were prepared by spin coating and TPD and $Alq_3$, films were prepared by vacuum evaporation. It was found that the turn-on voltage, current density, and luminance of the devices were dependent upon the thickness of CPP 400 Paste film in the Electroluminescent and current-voltage characteristics of the devices. This phenomena were explained by the energy level diagram of the device with the energy levels of the CPP400 Paste obtained by cyclic voltammetric method.

Surface Reoxidation Mechanism and Electrical Properites of SBLC in $BaTiO_3$ System ($BaTiO_3$계 SBLC의 표면 재산화 형성 기구 및 전기적 성질)

  • 이형규;김호기
    • Journal of the Korean Ceramic Society
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    • v.23 no.5
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    • pp.55-60
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    • 1986
  • A mechanism for formation of surface reoxidation layer in Surface Boundary Layer Capacitor (SBLC) has been studied. SBLC were prepared by reduction of $BaTiO_3$ doped with $Bi_2O_3$ and electrode firing of silver paste containing $Bi_2O_3$ The apparent dielectric constant was in the order of $10^5$ and the insulation resistance larger than $10^6$$\Omega$ It can be expected that $Bi_2O_3$ dopant in $BaTiO_3$ plays the role of inhibition of grain growth and decreasing the resistivity of $BaTiO_3$. In order to confirm the process of surface reoxidation layer effects of atmosphere and annealing time in electrode sintering were investigated.

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