Optoelectronic component comprising a bonding layer and method for producing a bonding layer in an optoelectronic component

Patent metadata

Field	Value
Publication number	US-9840647-B2
Application number	US-201415036534-A
Country	US
Kind code	B2
Filing date	Nov 5, 2014
Priority date	Nov 20, 2013
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

An optoelectronic component and a method for manufacturing an optoelectronic component are provided. In an embodiment, the optoelectronic component includes a layer sequence having an active layer configured to emit electromagnetic primary radiation, a converter lamina disposed in a beam path of the electromagnetic primary radiation and a bonding layer disposed between the layer sequence and the converter lamina, wherein the bonding layer comprises an inorganic-organic hybrid material having Si—O—Al bonds and/or Si—O—Zr bonds.

First claim

The invention claimed is:

1. A method for producing a bonding layer comprising an inorganic-organic hybrid material between a layer sequence having an active layer and a converter lamina in an optoelectronic component, the method comprising:
providing the layer sequence having the active layer and the converter lamina;
producing an adhesive;
applying the adhesive to the layer sequence or to the converter lamina;
positioning the converter lamina atop the layer sequence or positioning the layer sequence atop the converter lamina; and
curing the adhesive to form the bonding layer,
wherein producing the adhesive comprises:
providing a first reaction mixture comprising at least one compound of the formula III or at least one compound of the formula III and a compound of the formula IV:

wherein, in formula III:
R′ is hydrogen and/or an organic radical, and
R″ is an organic radical having an epoxy group or an organic radical having an isocyanate group, and
wherein, in formula IV:
M′=Si or Zr,
m′=0, 1, 2, 3, 4 or 5,
R′″ is hydrogen and/or an organic radical,
adding a solution comprising a compound of the formula I and a compound of the formula II dropwise to the first reaction mixture to form a second reaction mixture:

wherein, in formula I:
M=Al or Zr,
R is hydrogen and/or an organic radical, and
x=3 or 4, and
wherein, in formula II:
R 1 and R 2 may be chosen identically or differently and are each hydrogen and/or an organic radical.

2. The method according to claim 1 , wherein the compound of the formula I and the at least one compound of the formula III are used in a molar ratio of 1:1 to 1:10.

3. The method according to claim 1 , further comprising adding an acid to the second reaction mixture to form a third reaction mixture after adding the solution.

4. The method according to claim 1 , wherein the following applies to the at least one compound of the formula III:
R′ is selected from a group comprising hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, cyclohexyl and phenyl radicals and combinations thereof.

5. The method according to claim 1 , wherein the at least one compound of the formula III has the following formula IIIa:

wherein m=0, 1, 2, 3, 4 or 5.

6. The method according to claim 1 , wherein, while providing the first reaction mixture, the first reaction mixture comprises a first compound and a second compound of the formula III or a first compound and a second compound of the formula III and a compound of the formula IV, and wherein the following applies to the first compound of the formula III: R″ is an organic radical having an epoxy group, and the following applies to the second compound of the formula III: R″ is an organic radical having an isocyanate group.

7. The method according to claim 6 , wherein the first compound of the formula III has the following formula IIIa and the second compound of the formula III has the following formula IIId:

wherein R′ is independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, cyclohexyl and phenyl radicals and combinations thereof,
n=1, 2, 3, 4 or 5, and
m=0, 1, 2, 3, 4 or 5.

8. The method according to claim 1 , wherein the compound of the formula I has the following formula Ia or Ib:
Al(OR) 3   Formula Ia

Zr(OR) 4   Formula Ib,

wherein R is selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, cyclohexyl and phenyl radicals and combinations thereof.

9. The method according to claim 1 , wherein the following applies to the compound of the formula I:
M=Al,
x= 3 , and
R is selected from a group comprising hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, cyclohexyl and phenyl radicals and combinations thereof.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Pihale Sven
• Eder Florian

Classifications

• H01L33/56

  Electricity · mapped topic

• C08G77/58

  Metal-containing linkages · CPC title

• H01L2933/0041

  Electricity · mapped topic

• C09J183/14 Primary

  in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms (C09J183/10 takes precedence) · CPC title

• H01L33/507

  Electricity · mapped topic