Luminescence concentrators and luminescence dispersers on the basis of oriented dye zeolite antennas
A concentrator and disperser technology, applied in the field of fluorescent concentrators and fluorescent dispersers based on directional dye zeolite antennas, can solve the problems of not being widely accepted
Active Publication Date: 2014-09-10
UNIV ZURICH +2
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Problems solved by technology
LCD TVs equipped with LEDs are available but so far (2008) not widely accepted
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[0038] Embodiment of the invention
[0039] 1. Build LC
[0040] The incorporation of the dye into the zeolite L crystals is usually done from the gas phase for uncharged dye molecules or from a suitable solvent for cationic dyes. The dye absorbed on the surface of the outer zeolite crystals is then removed by washing with a solvent. The incorporation of different dyes can be done sequentially or simultaneously. In the case of sequential incorporation, the dye domain defines the result, in which case the positioning of the acceptor molecule in the middle of the zeolite channel is advantageous due to better shielding of external active species. Simultaneous incorporation of different dyes results in mixing within the crystal. To eliminate self-absorption, large donor / acceptor ratios (>10:1) are chosen. Examples of dyes that have been successfully incorporated into the channels of zeolite L in this way are shown in Figure 12 and 13 middle.
[0041] Application of dye-l...
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Abstract
The fluorescence concentrator (LK) can simultaneously concentrate direct and diffuse light by means of frequency shift and total internal reflection. It is completely different from geometric concentrators. With sufficient geometric expansion of the collector plate, almost arbitrarily high concentrations can be achieved in LK. A fluorescence disperser is a device that traps directional and non-directional incident light in a transparent body by means of frequency shift and total internal reflection and distributes it diffusely or directionally in an area by means of fluorescence emission. The object of the present invention is a method for the technical implementation of LK and fluorescence dispersers using zeolite crystals with a nanotube structure in which fluorescent dyes are embedded to give them antenna properties. With the resulting novel structure, the problem of impossibility or at least rather limited use of the LK technology is solved. This makes it possible to collect and concentrate sunlight and introduce it into a photovoltaic system, convert it into electricity and heat in a combined photovoltaic / hot water device, and introduce it into a new use of an optical fiber device.
Description
technical field [0001] The subject of the present invention is a device for converging as a fluorescent concentrator or for dispersing as a fluorescent disperser as claimed in claim 1, a method for producing the device as described in claim 4 and as claimed in claims 5, 6, 7, Use of the device described in 8, 9, 10, 11, 12, 13. Background technique [0002] Fluorescence concentrators, here simply referred to as LCs, are devices that simultaneously converge direct and diffuse light through frequency shifting and total internal reflection; see figure 1 . These concentrator methods are completely different from geometric concentrators. The method is not limited by Liouville's theorem, according to which the product of photon flux density and radiant flux divergence is always constant in a geometric concentrator. Given sufficient geometrical dimensions of the light-collecting plate, an almost infinite light concentration can theoretically be achieved in LC; on this subject, s...
Claims
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IPC IPC(8): H01L31/055C09K11/06F24S23/00F24S23/30
CPCY02E10/52H01L51/447F24J2/065H01L31/02322C09K11/06H01L31/055Y02E10/549F24S23/11Y02P70/50H10K30/87
Inventor 吉翁·卡尔扎费利安德烈亚斯·昆兹曼D·布吕维勒C·鲍尔
Owner UNIV ZURICH