摘要:
Synthetic Crandallites of the general composition MeAl.sub.3 (PO.sub.4) (OH).sub.5.H.sub.2 O (Me=alkaline earth metal) are used for the separation of cations, especially alkaline earth metals, lanthanides and actinides, at a pH greater than 6 and temperature above 40.degree. C.
摘要翻译:通常组合物MeAl3(PO4)(OH)5.H2O(Me =碱土金属)的合成二硬脂酸盐用于分离阳离子,特别是碱土金属,镧系元素和锕系元素,pH大于6,温度高于40 DEG C.
摘要:
An optoelectronic component comprising an optoelectronic semiconductor chip (104) having a contact side (106) and a radiation coupling-out side (108) situated opposite; a chip carrier (102), on which the semiconductor chip (104) is applied via its contact side (106); a radiation conversion element (110) applied on the radiation coupling-out side (108); and a reflective potting compound (112), which is applied on the chip carrier (102) and laterally encloses the semiconductor chip (104) and the radiation conversion element (110); wherein the potting compound (112) adjoins an upper edge of the radiation conversion element (110) in a substantially flush fashion, such that a top side of the radiation conversion element (110) is free of the potting compound (112).
摘要:
A method of producing an optoelectronic component includes providing a cavity; introducing a liquid matrix material with phosphor particles distributed therein into the cavity; introducing a semiconductor chip into the matrix material; sedimenting the phosphor particles in the matrix material; and curing the matrix material, wherein a conversion layer including phosphor particles is produced, said conversion layer being arranged on the semiconductor chip.
摘要:
A method for producing a plurality of radiation-emitting semiconductor components (10) is specified, said components each comprising at least one semiconductor chip (1) and a converter lamina (2). For this purpose, this method involves providing a plurality of semiconductor chips (1) in the wafer assembly (10a), said semiconductor chips each being suitable for emitting a primary radiation. Moreover, a plurality of converter laminae (2) are provided on a common carrier (2a), said converter laminae each being suitable for converting the primary radiation into a secondary radiation, wherein a converter lamina (2) is in each case mounted on one semiconductor chip (1) or onto a plurality of semiconductor chips (1) by means of an automated method.
摘要:
An optoelectronic component comprising a housing and a luminescence diode chip arranged in the housing is specified, which component emits a useful radiation. The housing has a housing material which is transmissive to the useful radiation and which is admixed with radiation-absorbing particles in a targeted manner for setting a predetermined radiant intensity or luminous intensity of the emitted useful radiation. The radiation-absorbing particles reduce the radiant intensity or the luminous intensity by a defined value in a targeted manner in order thus to set a predetermined radiant intensity or luminous intensity for the component. A method for producing an optoelectronic component of this type is additionally disclosed.
摘要:
According to at least one embodiment of the semiconductor arrangement, the latter comprises a mounting side, at least one optoelectronic semiconductor chip with mutually opposing chip top and bottom, and at least one at least partially radiation-transmissive body with a body bottom, on which the semiconductor chip is mounted such that the chip top faces the body bottom. Moreover, the semiconductor arrangement comprises at least two electrical connection points for electrical contacting of the optoelectronic semiconductor chip, wherein the connection points do not project laterally beyond the body and with their side remote from the semiconductor chip delimit the semiconductor arrangement on the mounting side thereof.
摘要:
A method for producing an optoelectronic device includes providing a carrier, applying at least one first metal layer on the carrier, providing at least one optical component, applying at least one second metal layer on the at least one optical component, and mechanically connecting the carrier to the at least one optical component by the at least one first and the at least one second metal layer, wherein the connecting includes friction welding or is friction welding.
摘要:
An optoelectronic component comprising an optoelectronic semiconductor chip (104) having a contact side (106) and a radiation coupling-out side (108) situated opposite; a chip carrier (102), on which the semiconductor chip (104) is applied via its contact side (106); a radiation conversion element (110) applied on the radiation coupling-out side (108); and a reflective potting compound (112), which is applied on the chip carrier (102) and laterally encloses the semiconductor chip (104) and the radiation conversion element (110); wherein the potting compound (112) adjoins an upper edge of the radiation conversion element (110) in a substantially flush fashion, such that a top side of the radiation conversion element (110) is free of the potting compound (112).
摘要:
A lighting device (1) comprises at least one element (2) emitting light which is at least in part visible, and at least one conversion medium (3), which converts at least part of the radiation emitted by the element (2) into radiation of another frequency. In addition, the lighting device (1) comprises at least one filter medium (4) which filters at least part of the radiation, and which is configured such that the quantity of the conversion medium (4) to be used is reduced for at least one predetermined colour saturation and/or one predetermined hue. This means that, compared with a light source corresponding to the lighting device (1) apart from the filter medium (4), savings are made in conversion medium (3) while achieving the same colour saturation or the same hue. Light of a predetermined colour saturation or of a predetermined hue may be efficiently generated by such a lighting device (1) and the lighting device (1) may be inexpensively produced. In operation, it also has high light intensities and a long service life.
摘要:
A housing accommodating a semiconductor chip is set out. The housing and chip may be used for sending and/or receiving radiation. Popular applications of the housing may be in light emitting diodes. The housing includes a conductor strip that is punched into two electrically isolated portions. The housing further includes a cavity extending inwards from the top of the housing. The conductor portions include respective areas that are exposed at the bottom of the cavity. The semiconductor chip is bonded to one of the exposed areas and a wire bonds the chip to the second exposed area. The conductor portions also terminate in exposed electrodes, which allow for electrical connection of the chip with external devices. A window is formed in the cavity and the walls of the housing that form the cavity may be made of a reflective material. The electrodes remain unexposed to the window but for any residual areas about the chip and bonding wire within the first and second exposed areas. By minimizing the area of the conductor exposed to the window, delamination brought about by the different thermal expansions of the window and conductor are minimized and/or eliminated. Likewise, with a reflective housing covering the base of the cavity that accommodates the window, internal radiation reflection is increased over that which was achieved with an exposed conductor.