Method for controlling the optical properties of uv filter layers

Patent metadata

Field	Value
Publication number	US-2016116652-A1
Application number	US-201414898507-A
Country	US
Kind code	A1
Filing date	May 28, 2014
Priority date	Jun 20, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

The invention relates to a method for controlling the optical properties of UV filter layers, in particular for controlling the UV absorption properties of metal oxide-containing UV filter layers, to UV filter layers produced thereby, and to the use thereof, in particular for the production of electronic components.

First claim

1 . Method for controlling the UV absorption properties of metal oxide-containing UV filter layers, where
A) a layer comprising an organometallic compound is applied to a substrate and converted into a layer comprising a metal oxide or a metal mixed oxide at a temperature in the range from >230° C. to 500° C., and/or B) an organometallic compound is applied to a substrate and converted into a metal oxide or metal mixed oxide and where the application and conversion takes place a number of times successively with formation of multilayered systems comprising metal oxides and/or metal mixed oxides and the organometallic compound for an individual layer is applied in a solution or dispersion comprising same in a concentration which reduces with increasing total number of layers in the multilayered systems, where the concentration in each of the individual layers is the same within a single multilayered system.

2 . Method according to claim 1 , characterised in that the organometallic compound is a metal oximate, a metal acetylacetonate and/or a metal acetate.

3 . Method according to claim 1 , characterised in that the metal oxide and/or metal mixed oxide contains at least tin or zinc.

4 . Method according to claim 1 , characterised in that the metal oxide and/or metal mixed oxide is ITO, ZnO, IZO or IGZO.

5 . Method according to claim 1 , characterised in that the layer or multilayered system comprising metal oxides and/or metal mixed oxides have a total layer thickness of at most 200 nm.

6 . Method according to claim 1 , characterised in that a multilayered system is produced from 2 to 25 individual layers comprising metal oxides and/or metal mixed oxides.

7 . Method according to claim 1 , characterised in that a layer or multilayered system comprising metal oxides and/or metal mixed oxides is obtained which transmits incident light in the wavelength range from 400 nm to 780 nm to the extent of at least 95%.

8 . Method according to claim 1 , characterised in that a layer or multilayered system comprising metal oxides and/or metal mixed oxides is obtained which absorbs incident light in the wavelength range from 315 nm to 400 nm to the extent of up to 25%.

9 . Method according to claim 1 , characterised in that a layer or multilayered system comprising metal oxides and/or metal mixed oxides is obtained which absorbs incident light in the wavelength range from 315 nm to 400 nm to the extent of up to 50%.

10 . Metal oxide-containing UV filter layers produced by a method according to claim 1 .

11 . Metal oxide-containing UV filter layers according to claim 10 , characterised in that they comprise metal oxides and/or metal mixed oxides of the elements tin or zinc.

12 . An electronic component comprising a UV filter layer, wherein said UV filter layer is a metal oxide-containing UV filter layer according to claim 10 .

13 . The electronic component according to claim 12 , wherein said electronic component is selected from are LEDs, OLEDs, transistors, and solar cells.

Assignees

• Merck Patent Gmbh

Inventors

• Haeming Marc
• Pacak Philipp
• Bonrad Klaus

Classifications

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title

• G02B5/208 Primary

  for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title

• G02B5/289

  Rugate filters · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• G02B5/283 Primary

  designed for the ultraviolet · CPC title