The present invention relates to a silver coated glass frit used in a paste composition for forming a solar cell electrode, a method for preparing the same, and a silver paste composition using a silver coated glass frit for a solar cell. More specifically, the present invention relates to: a method for preparing a silver-coated glass frit wherein a silver coated glass frit, in which silver (Ag) is coated on a surface of the glass frit, is prepared through a reduction reaction occurring by adding, to a first solution containing silver nitrate (AgNO3) mixed with a glass frit and an amine, a second solution containing a reductant, and during the preparation process, a silver (Ag) coating layer is more uniformly formed on the surface of the glass frit by controlling the acidity of the first solution and the reaction temperature in the reduction reaction, thereby achieving an improved specific surface area; a silver-coated glass frit prepared by the method; and a silver paste composition for a solar cell wherein the composition is prepared by using the sliver-coated glass frit, and thus has significantly improved sintering characteristics and electrical conductivity.

Discussed is a paste composition for an electrode of a solar cell, the paste including a conductive powder, an organic vehicle, and an inorganic composition formed by including a plurality of metal compounds including a gallium compound including gallium as a component of a main network former of the inorganic composition.

The thick film resistor paste for a resistor has no abnormalities of cracks in appearance and sufficient surge resistance, especially for low resistance, while using lead borosilicate glass. The thick film resistor paste comprises a silver powder or a palladium powder, or a mixture of both of the silver powder and the palladium powder, a ruthenium-oxide-containing glass powder and an organic vehicle, the ruthenium-oxide-containing glass powder comprises 10 to 60 mass % of ruthenium oxide, a glass composition of the ruthenium-oxide-containing glass powder comprises 3 to 60 mass % of silicon oxide, 30 to 90 mass % of lead oxide, 5 to 50 mass % of boron oxide relative to 100 mass % of glass components, and, a combined amount of silicon oxide, lead oxide and boron oxide by mass % is 50 mass % or more relative to 100 mass % of the glass components.

In general, the invention relates to a paste comprising:

i) silver particles;
ii) a particulate lead-silicate glass comprising iia) at least one oxide of silicon; iib) at least one oxide of lead; iic) at least one chloride; iid) optionally at least one further oxide being different from components iia) and iib);
iii) an organic vehicle.

The invention also relates to a solar cell precursor, to a process for the preparation of a solar cell, to a solar cell obtainable by this process, to a module comprising such a solar cell and to the use of a particulate lead-silicate glass as a component in a silver paste that can be used for the formation of an electrode.

The invention relates to a coated glass substrate or glass ceramic substrate with resistant, multi-functional surface properties, including a combination of anti-microbial, anti-reflective and anti-fingerprint properties, or a combination of anti-microbial, anti-reflective and anti-fingerprint properties where the substrate is chemically pre-stressed, or a combination of anti-microbial and anti-reflective properties where the substrate is chemically pre-stressed. The coated glass substrate or glass ceramic substrate exhibits a unique combination of functions which are permanently present and do not exert a negative effect on each other.

The present disclosure discloses a type of front finger paste for N-type solar cells. In parts by weight, the raw materials for preparing the paste include 1-5 parts of high-activity glass powder, 1-5 parts of silicon powder, 75-79 parts of aluminum-silicon alloy powder and 15-20 parts of organic component. The front finger paste for N-type solar cells and its preparation method provided by the present disclosure use aluminum paste to replace the aluminum-doped silver paste used in the existing technologies, thus reducing the production cost of N-type solar cells; and the high-activity glass powder contained in the aluminum paste can eliminate the grooving process before printing, thus simplifying the process steps, and it does not damage the passivation layer and can improve the electrical performance of the solar cell.

The invention relates to a coated glass substrate or glass ceramic substrate with resistant, multi-functional surface properties, including a combination of anti-microbial, anti-reflective and anti-fingerprint properties, or a combination of anti-microbial, anti-reflective and anti-fingerprint properties where the substrate is chemically pre-stressed, or a combination of anti-microbial and anti-reflective properties where the substrate is chemically pre-stressed. The coated glass substrate or glass ceramic substrate exhibits a unique combination of functions which are permanently present and do not exert a negative effect on each other.

The present invention relates to a silver coated glass frit used in a paste composition for forming a solar cell electrode, a method for preparing the same, and a silver paste composition using a silver coated glass frit for a solar cell. More specifically, the present invention relates to: a method for preparing a silver-coated glass frit wherein a silver coated glass frit, in which silver (Ag) is coated on a surface of the glass frit, is prepared through a reduction reaction occurring by adding, to a first solution containing silver nitrate (AgNO3) mixed with a glass frit and an amine, a second solution containing a reductant, and during the preparation process, a silver (Ag) coating layer is more uniformly formed on the surface of the glass frit by controlling the acidity of the first solution and the reaction temperature in the reduction reaction, thereby achieving an improved specific surface area; a silver-coated glass frit prepared by the method; and a silver paste composition for a solar cell wherein the composition is prepared by using the sliver-coated glass frit, and thus has significantly improved sintering characteristics and electrical conductivity.

A conductive paste for N-type solar cells, comprising (a) 70 to 99.75 wt % of a silver power; (b) 0.1 to 3.0 wt % of an aluminum powder, wherein D50 of the aluminum powder is not larger than 3 μm; (c) 5 to 10 wt % of a glass frit; and (d) 3 to 30 wt % of an organic medium; wherein % is based on the total weight of the paste composition.

A light emitting device includes a light emitting diode (LED); a transparent optic having a refractive index n.sub.optic; and a phosphor layer spaced apart from the LED and positioned between the LED and the transparent optic. The phosphor layer has an effective refractive index n.sub.phosphor, where a gap between the LED and the phosphor layer has a refractive index n.sub.gap that is less than n.sub.phosphor. The transparent optic has an inner convex surface in contact with the phosphor layer. The inner convex surface has an inner radius of curvature r; and an outer convex surface facing away from the phosphor layer and being a surface through which the light emitting device emits light into a medium adjacent the outer convex surface. The medium has a refractive index n.sub.medium. The outer convex surface has an outer radius of curvature R, such that r/R is equal to n.sub.medium/n.sub.optic.