METHOD FOR CONTROLLING THE OPTICAL PROPERTIES OF UV FILTER LAYERS

• US 20160116652A1
• Filed: 05/28/2014
• Published: 04/28/2016
• Est. Priority Date: 06/20/2013
• Status: Abandoned Application

• Current Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Original Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Inventors: Bonrad, Klaus, Haeming, Marc, Pacak, Philipp
• Application Number:
  US14/898,507
• Publication Number:
  US 20160116652A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 1/04 made of organic materials, e.g. plastics G02B1/08 takes precedence
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02B 5/223 containing organic substances, e.g. dyes, inks or pigments
• CPC Class Codes: G02B 5/283 designed for the ultraviolet
• CPC Class Codes: G02B 5/289 Rugate filters

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.

Claims

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.