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Protective composition

A protective, compositional technology, applied in the direction of optical elements, instruments, lighting and heating equipment used to change the spectral characteristics of emitted light, which can solve problems such as delay

Inactive Publication Date: 2015-08-26
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a low penetration rate does not solve the problem, it delays it

Method used

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  • Protective composition
  • Protective composition
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Embodiment Construction

[0033] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to be thorough and complete, and to fully convey to those skilled in the art Communicate the scope of the application.

[0034] The present invention is based on the realization that organometallic getters capable of forming crystal complexes with sulfur can be used to capture H 2 S gas. Therefore, side effects of such gases can be reduced, especially in light emitting devices. Advantageously, the organometallic getter can also form a crystal complex with selenium, thus also trapping H 2 Se gas. Several metals can form crystal complexes with sulfur and / or selenium, even nanocrystals, which have no or only low light a...

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Abstract

A protective composition for use in an optoelectronic device, said protective composition comprises an organometallic getter capable of reacting with sulfur and / or selenium to form crystals containing a metal and sulfur and / or selenium. The protective composition may form a layer or an optical component. Advantageously, the protective composition effectively removes sulfide gas and results in the formation of stable crystals, and does not merely reduce the permeation rate of the gas. The resulting crystals typically have high transparency and low light absorption.

Description

technical field [0001] The invention relates to materials and components for protection against harmful substances in optoelectronic devices and to lighting devices comprising such materials and components. Background technique [0002] In many cases, corrosive gases (such as H 2 The existence or formation of S) is a problem. For example, in lighting devices using silver reflectors, the reaction of the silver with sulfide gases present in the surrounding atmosphere leads to blackening of the silver and thus damages the function of the reflector. [0003] In some light-emitting devices based on phosphor-converted light sources, sulfide gas can be obtained from sulfur-containing fluorescent materials, usually based on sulfide materials such as calcium sulfide (CaS), strontium sulfide (SrS), zinc sulfide (ZnS), or combinations thereof Phosphors such as (Ca,Sr)S) are released. Sulfide-based phosphors are particularly sensitive to water and can react to form calcium or stronti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04
CPCH01L2924/0002H01L21/56H01L23/293G02B1/04H01L23/296H01L23/24F21V9/30H01L2924/00C07C53/10H01L33/44H01L33/50
Inventor R·A·M·希克梅特T·范博梅尔
Owner SIGNIFY HLDG BV