An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment an optoelectronic component includes at least one laser source configured to emit at least one laser beam during operation and a self-supporting conversion element arranged in a beam path of the laser beam, wherein the self-supporting conversion element comprises a substrate followed by a first layer, the first layer being directly bonded to the substrate and comprising at least one conversion material embedded in a glass matrix, wherein the glass matrix has a proportion of 50 vol % to 80 vol % inclusive in the first layer, wherein the substrate is free of the glass matrix and of the conversion material and mechanically stabilize the first layer, and wherein the first layer has a layer thickness of less than 200 m.

Provided is a ceramic complex having high luminous characteristics. Proposed is a ceramic complex including a rare earth aluminate fluorescent material, glass, and calcium fluoride, wherein, when the total amount of the rare earth aluminate fluorescent material, the glass, and the calcium fluoride is taken as 100% by volume, the content of the rare earth aluminate fluorescent material is in a range of 15% by volume or more and 60% by volume or less, the content of the glass is in a range of 3% by volume or more and 84% by volume or less, and the content of the calcium fluoride is in a range of 1% by volume or more and 60% by volume of less.

A lithium aluminum silicate (LAS) glass-ceramic has an average coefficient of thermal expansion (CTE) in a range from 0 to 50? C. of at most 0?0.1?10.sup.?6/K and a thermal hysteresis at least in a temperature range from 15? C. to 35? C. of <0.1 ppm. The LAS glass-ceramic includes (in mol % based on oxide): SiO.sub.2 60-<70; Li.sub.2O 7-9.6; MgO+ZnO>0.5-1.5; R.sub.2O>0.5, where R.sub.2O is Na.sub.2O and/or K.sub.2O and/or Cs.sub.2O and/or Rb.sub.2O; and nucleating agent with a content of 1.5 to 6 mol %. The nucleating agent is at least one component selected from the group consisting of TiO.sub.2, ZrO.sub.2, Ta.sub.2O.sub.5, Nb.sub.2O.sub.5, SnO.sub.2, MoO.sub.3, WO.sub.3 and HfO.sub.2.

The disclosure relates to a glass and a melt solder for the passivation of semiconductor components, the use of the glass or the melt solder for the passivation of semiconductor components, a passivated semiconductor component and a method for passivating semiconductor components.

Provided is a wavelength conversion member that is less decreased in luminescence intensity with time by irradiation with light of an LED or LD and a light emitting device using the wavelength conversion member. A wavelength conversion member is formed of an inorganic phosphor dispersed in a glass matrix, wherein the glass matrix contains, in % by mole, 30 to 85% SiO.sub.2, 0 to 20% B.sub.2O.sub.3, 0 to 25% Al.sub.2O.sub.3, 0 to 3% Li.sub.2O, 0 to 3% Na.sub.2O, 0 to 3% K.sub.2O, 0 to 3% Li.sub.2O+Na.sub.2O+K.sub.2O, 0 to 35% MgO, 0 to 35% CaO, 0 to 35% SrO, 0 to 35% BaO, 0.1 to 45% MgO+CaO+SrO+BaO, and 0 to 4% ZnO, and the inorganic phosphor is at least one selected from the group consisting of an oxide phosphor, a nitride phosphor, an oxynitride phosphor, a chloride phosphor, an oxychloride phosphor, a halide phosphor, an aluminate phosphor, and a halophosphate phosphor.

A glass or glass-ceramic plate is provided that has two side faces, a thickness of between 2 mm and 6 mm, a circumferential edge face, a flatness less than or equal to 0.1%, and a region of a first face having a mean surface roughness of less than 0.5 m and a standard deviation of the surface roughness of less than 0.1 m. The mean surface roughness and the standard deviation are determined by measuring a roughness at nine points on the first face by measuring a line profile with a stylus device and with evaluation according to ISO 4827. The nine points are at least 5 cm apart from one another. The plate further includes a coating on two subregions of the region that are at least 3 cm apart from one another, where the coating has a raggedness in the subregions that differ by not more than 10%.

The present invention discloses a glass ceramic for excitation of high-power semiconductor light source. An expression of constitution of the glass ceramic is (1x)A: xB, wherein x as a weight percentage of B, is ranging from 1% to 30%; A as a precursor glass, has a composition of aSb.sub.2O.sub.3-bB.sub.2O.sub.3-cZnO-dM.sub.2O, a, b, c, d being molar percentages, a+b+c+d=100%, M among M.sub.2O represents an alkali metal, and M.sub.2O is an alkali metallic oxide or an alkali metallic carbonate; and B is a YAG:Ce.sup.3+ fluorescent powder. The precursor glass provided by the present invention has a relatively low remelting temperature, without devitrification during the process of preparing the final products or absorption of blue light. The product glass ceramic has a luminous efficiency of 300 lm/W to 400 lm/W. A white light semiconductor light source is prepared by the product glass ceramic in combination with the high-power blue light semiconductor light source A preparation method provided by the present invention has advantages such as low cost, excellent performances, and being green, pollution-free and suitable for the large-scale industrial production. The present invention can be applied in the field of illumination light source and display light source, such as head-lights of vehicles, searchlights, projectors and laser cinemas.

Ceramic colours containing effect pigments and a liquid glass forming component for decoration of metallic, ceramic and glassy articles and a process for the preparation of a ceramic glaze.

A quantum dot composite structure and a method for forming the same are provided. The quantum dot composite structure includes: a glass particle including a glass matrix and a plurality of quantum dots located in the glass matrix, wherein at least one of the plurality of quantum dots includes an exposed surface in the glass matrix; and an inorganic protective layer disposed on the glass particle and covering the exposed surface.

A resistive composition that can form a thick film resistor excluding a toxic lead component from a conductive component and glass and having characteristics equivalent to or superior to conventional resistors in terms of, in a wide resistance range, resistance values, TCR characteristics, current noise characteristics, withstand voltage characteristics and the like. The resistive composition of the present invention includes: ruthenium-based conductive particles including ruthenium dioxide; a glass frit that is essentially free of a lead component; and an organic vehicle, wherein the glass frit is a glass frit which is constituted such that in a case where a fired product of a mixture of the glass frit and the ruthenium dioxide has in a range of 1 k/ to 1 M/, the fired product exhibits a temperature coefficient of resistance in a plus range.