Method for producing a ceramic converter element, ceramic converter element, and optoelectronic component

An optoelectronic component comprising:

• an active layer sequence configured to emit electromagnetic radiation of a primary wavelength;
• and
• a ceramic converter element arranged in a beam path of the active layer sequence and configured to convert the primary wavelength at least partly into a secondary wavelength, the ceramic converter element comprising:
• a quantum efficiency of at least 90%;
• and
• Ce and/or Gd doped Y3Al5O12 embedded in a matrix chosen from undoped Y3Al5O12 or undoped Y3Al5O12 and Al2O3;
• or
• Ce and/or Gd doped Lu3Al5O12 embedded in a matrix chosen from undoped Lu3Al5O12 or undoped Lu3Al5O12 and Al2O3,
• wherein Ce and/or Gd doped Y3Al5O12, Ce and/or Gd doped Lu3Al5O12, undoped Y3Al5O12, undoped Y3Al5O12 and Al2O3, undoped Lu3Al5O12 or undoped Lu3Al5O12 and Al2O3 are free of second phases.

An optoelectronic component comprising:

• an active layer sequence configured to emit electromagnetic radiation of a primary wavelength;
• and
• a ceramic converter element arranged in a beam path of the active layer sequence and configured to convert the primary wavelength at least partly into a secondary wavelength, the ceramic converter element comprising:
• a quantum efficiency of at least 90%;
• Ce and/or Gd doped YAG embedded in a matrix chosen from YAG or YAG and Al2O3;
• or
• Ce and/or Gd doped LuAG embedded in a matrix chosen from LuAG or LuAG and Al2O3.