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THICKENED ETCHING COATING LIQUID, AND METHOD FOR SELECTIVELY ETCHING SUNLIGHT POWER GENERATION ELEMENT SUBSTRATE FOR SOLAR CELL USING THE THICKENED ETCHING COATING LIQUID
THICKENED ETCHING COATING LIQUID, AND METHOD FOR SELECTIVELY ETCHING SUNLIGHT POWER GENERATION ELEMENT SUBSTRATE FOR SOLAR CELL USING THE THICKENED ETCHING COATING LIQUID
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机译:厚膜蚀刻液,以及使用厚膜蚀刻液选择性地蚀刻太阳能电池的太阳光产生元素基质的方法
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摘要
A HIGH VISCOSITY ETCHANT AND A SELECTIVE ETCHING METHOD FOR PHOTOVOLTAIC ELEMENT SUBSTRATES OF SOLAR CELLS USING THE SAME A main subject of the present invention is to provide a high viscosity etchant EL and a selective etching method using the same which etches a photovoltaic element substrate to a set depth concretely and does not spread undesirably. The high viscosity etchant EL of the present invention comprises an etchant being an alkaline solution for etching a photovoltaic element substrate 12; a viscosity increasing additive derived from a plant for increasing a viscosity of the etchant EL. The selective etching method comprises applying the high viscosity etchant EL to a surface of the photovoltaic element substrate 12; reacting the high viscosity etchant EL and the photovoltaic element substrate 12 by heating them; washing the photovoltaic element substrate 12 with pure water.
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