摘要:
A solar cell includes a silicon substrate including a front surface for receiving light, and a rear surface opposite the front surface, an emitter diffusion region on the rear surface and doped with a first polarity that is opposite to a polarity of the silicon substrate, a base diffusion region on the rear surface of the substrate and doped with a second polarity that is the same as the polarity of the silicon substrate, and an insulation gap between the emitter diffusion region and the base diffusion region, wherein the base diffusion region has a closed polygonal shape, and wherein the insulation gap is adjacent the base diffusion region.
摘要:
A method for manufacturing a solar cell comprises disposing a first doping layer on a substrate, forming a first doping layer pattern by patterning the first doping layer to expose a portion of the substrate, disposing a second doping layer on the first doping layer pattern to cover the exposed portion of the substrate, diffusing an impurity from the first doping layer pattern which forms a first doping region in a surface of the substrate, and diffusing an impurity from the second doping layer which forms a second doping region in the surface of the substrate, wherein the forming of the first doping layer pattern uses an etching paste.
摘要:
A method for manufacturing a solar cell comprises disposing a first doping layer on a substrate, forming a first doping layer pattern by patterning the first doping layer to expose a portion of the substrate, disposing a second doping layer on the first doping layer pattern to cover the exposed portion of the substrate, diffusing an impurity from the first doping layer pattern which forms a first doping region in a surface of the substrate, and diffusing an impurity from the second doping layer which forms a second doping region in the surface of the substrate, wherein the forming of the first doping layer pattern uses an etching paste.
摘要:
A method for manufacturing a solar cell includes disposing a first doping layer on a substrate, disposing a diffusion preventing layer on the first doping layer, patterning the first doping layer and the diffusion preventing layer to expose a portion of the substrate, forming a second doping layer which is disposed on the exposed portion of the substrate on the diffusion preventing layer, diffusing an impurity from the first doping layer to form a first doping region in a surface of the substrate and diffusing an impurity from the second doping layer to form a second doping region in the surface of the substrate surface, wherein the exposed portion of the substrate formed by patterning the first doping layer and the diffusion preventing layer and a portion of the remaining first doping layer and the diffusion preventing layer which are not patterned are alternately arranged with a lattice shape, and the first doping region and the second doping region are alternately arranged with the lattice shape.
摘要:
A method for manufacturing a solar cell according to an exemplary embodiment includes: forming a first doping film on a substrate; patterning the first doping film so as to form a first doping film pattern and so as to expose a portion of the substrate; forming a diffusion prevention film on the first doping film pattern so as to cover the exposed portion of the substrate; etching the diffusion prevention film so as to form spacers on lateral surfaces of the first doping film pattern; forming a second doping film on the first doping film pattern so as to cover the spacer and exposed substrate; forming a first doping region on the substrate surface by diffusing an impurity from the first doping film pattern into the substrate; and forming a second doping region on the substrate surface by diffusing an impurity from the second doping film pattern into the substrate.
摘要:
A negative active material, an electrode including the same, and a lithium battery including the electrode. The negative active material has no volumetric expansion and has high solubility with respect to lithium. In addition, the negative active material is in the form of spherical particles, and thus does not require a separate granulating process. Moreover, the negative active material may enhance the capacity of a lithium battery.
摘要:
A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers.
摘要:
A protective layer of a plasma display panel includes smoky magnesium oxide, the smoky magnesium oxide having single crystal magnesium oxide with a plurality of cavities therein.
摘要:
A backlight unit includes a plurality of light emitting diodes as a light source; a board having a rectangular shape and including a plurality of metal lines each extending along a first direction, wherein the plurality of light emitting diodes are arranged on the board and respectively connected to the plurality of metal lines; a pad portion attached on a side, which is parallel to the first direction, of the board and including first to Nth pads respectively connected to the plurality of metal lines, wherein N is a positive integer; a driving circuit connected to the first to Nth pads and providing a driving signal into the plurality of light emitting diodes; and an optical member at a side of the light emitting diodes and for improving a light property.
摘要:
The method of preparing a chromium oxide catalyst for preparation of pentafluoroethane using a chloroethane compound includes heat treating chromium hydroxide powder at a temperature not higher than 300° C. to obtain chromium oxide powder, heat treating metal hydroxide, at a temperature not higher than 300° C. to obtain metal oxide powder, mixing 85˜99.5 wt % of the chromium oxide powder with 0.5˜15 wt % of the metal oxide powder to obtain a mixture, forming the mixture into a pellet, calcining the pellet at 200-300° C. using nitrogen gas, and fluorinating the pellet at 300-320° C. using a gas mixture including N2 and HF, and then at 320-380° C. using HF gas. The fluorination catalyst prepared using the method of this invention can be effectively used to prepare pentafluoroethane at a high yield using a chloroethane compound.
摘要翻译:使用氯乙烷化合物制备五氟乙烷的氧化铬催化剂的方法包括在不高于300℃的温度下热处理氢氧化铬粉末,得到不高于300℃的氧化铬粉末,热处理金属氢氧化物 ℃,得到金属氧化物粉末,将85〜99.5重量%的氧化铬粉末与0.5〜15重量%的金属氧化物粉末混合,得到混合物,将混合物形成颗粒,在200-300℃下煅烧沉淀 ℃,并使用包含N 2 H 2和HF的气体混合物,然后在320-380℃下使用HF气体在300-320℃氟化颗粒。 使用本发明的方法制备的氟化催化剂可以有效地用于使用氯乙烷化合物以高产率制备五氟乙烷。