Method for manufacturing semiconductor light emitting element

A method for manufacturing a semiconductor light emitting element, comprising:

• forming a structural body, the structural body including a growth substrate and a stacked main body, the stacked main body being provided on the growth substrate, the stacked main body including a first nitride semiconductor film of a first conductivity type, a light emitting film provided on the first nitride semiconductor film, and a second nitride semiconductor film of a second conductivity type provided on the light emitting film, tensile stress being applied to the stacked main body;
• bonding the stacked main body to a substrate main body;
• removing the growth substrate;
• forming a plurality of stacked bodies by dividing the stacked main body into a plurality of regions by removing a portion of the stacked main body, the stacked bodies including a first nitride semiconductor layer formed from the first nitride semiconductor film, a second nitride semiconductor layer formed from the second nitride semiconductor film, and a light emitting layer formed from the light emitting film;
• forming an uneven portion in a surface of the first nitride semiconductor layer on a side opposite to the light emitting layer for each of the stacked bodies;
• and
• forming a plurality of the semiconductor light emitting elements by dividing the substrate main body for each of the stacked bodies, each of the semiconductor light emitting elements including the stacked body and a supporting substrate formed from the divided substrate main body,
• the forming of the structural body including:
• forming the first nitride semiconductor film on the growth substrate;
• forming the light emitting film on the first nitride semiconductor film;
• and
• forming the second nitride semiconductor film on the light emitting film,
• the forming of the structural body further including forming a buffer layer between the growth substrate and the first nitride semiconductor film, the buffer layer being used as a stopper when removing the growth substrate,
• the removing of the growth substrate further including removing the buffer layer,
• the forming of the first nitride semiconductor film further including forming a first layer on the buffer layer and forming a second layer on the first layer, a concentration of an impurity of the second layer being higher than a concentration of an impurity of the first layer, and
• the removing of the growth substrate further including removing the first layer.

A method for manufacturing a semiconductor light emitting element, comprising:

• bonding a stacked main body to a substrate main body, the stacked main body being included in a structural body, the structural body further including a growth substrate, the stacked main body being provided on the growth substrate, the stacked main body including a first nitride semiconductor film of a first conductivity type, a light emitting film provided on the first nitride semiconductor film, and a second nitride semiconductor film of a second conductivity type provided on the light emitting film, tensile stress being applied to the stacked main body;
• removing the growth substrate;
• forming a plurality of stacked bodies by dividing the stacked main body into a plurality of regions by removing a portion of the stacked main body, the stacked bodies including a first nitride semiconductor layer formed from the first nitride semiconductor film, a second nitride semiconductor layer formed from the second nitride semiconductor film, and a light emitting layer formed from the light emitting film;
• forming an uneven portion in a surface of the first nitride semiconductor layer on a side opposite to the light emitting layer for each of the stacked bodies;
• and
• forming a plurality of the semiconductor light emitting elements by dividing the substrate main body for each of the stacked bodies, each of the semiconductor light emitting elements including the stacked body and a supporting substrate formed from the divided substrate main body,
• the bonding the stacked main body to the substrate main body including:
• forming an etching stop film on the second nitride semiconductor film prior to the bonding of the major surface of the structural body to the substrate main body;
• exposing a portion of the second nitride semiconductor film by removing a portion of the etching stop film prior to the bonding of the major surface of the structural body to the substrate main body;
• and
• forming an electrode on the portion of the second nitride semiconductor film, the electrode being electrically connected to the second nitride semiconductor film,
• the forming of the stacked bodies by dividing the stacked main body including dividing the stacked main body by etching the stacked main body from the first nitride semiconductor film side to the etching stop film.

A method for manufacturing a semiconductor light emitting element, comprising:

• bonding a stacked main body to a substrate main body, the stacked main body being included in a structural body, the structural body further including a growth substrate, the stacked main body being provided on the growth substrate, the stacked main body including a first nitride semiconductor film of a first conductivity type, a light emitting film provided on the first nitride semiconductor film, and a second nitride semiconductor film of a second conductivity type provided on the light emitting film, tensile stress being applied to the stacked main body;
• removing the growth substrate;
• forming a plurality of stacked bodies by dividing the stacked main body into a plurality of regions by removing a portion of the stacked main body, the stacked bodies including a first nitride semiconductor layer formed from the first nitride semiconductor film, a second nitride semiconductor layer formed from the second nitride semiconductor film, and a light emitting layer formed from the light emitting film;
• forming an uneven portion in a surface of the first nitride semiconductor layer on a side opposite to the light emitting layer for each of the stacked bodies;
• forming a back surface electrode on a back surface of the substrate main body, the back surface being a surface of the substrate main body on a side opposite to a bonding surface of the substrate main body the bonding surface being bonded to the stacked main body;
• and
• forming a plurality of the semiconductor light emitting elements by dividing the substrate main body for each of the stacked bodies, each of the semiconductor light emitting elements including the stacked body and a supporting substrate formed from the divided substrate main body,
• the forming of the back surface electrode further including polishing the substrate main body to cause a thickness of the substrate main body to be not less than 50 μm and not more than 250 μm.