Light-emitting apparatus, phosphor, and method of producing it

A phosphor comprising:

• fine-particle crystals of a III-V group compound semiconductor,
• wherein the fine-particle crystals each have a volume of 2 800 nm3 or less.

A method of producing a phosphor, comprising the step of:

• producing, from materials containing a III group element and a V group element and through chemical synthesis, a phosphor formed of a III-V group compound semiconductor in a form of fine-particle crystals each having a volume of 2 800 nm3 or less.

A method of producing a phosphor, comprising the step of:

• producing, by using a III-V group compound semiconductor as a material and by laser ablation, a phosphor formed of fine-particle crystals each having a volume of 2 800 nm3 or less.

A phosphor comprising:

• fine-particle crystals of a III-V group compound semiconductor,
• wherein the fine-particle crystals each measure 14 nm or less in two directions perpendicular to a longest side thereof.

A method of producing a phosphor, comprising the step of:

• producing, from materials containing a III group element and a V group element and through chemical synthesis, a phosphor formed of a III-V group compound semiconductor in a form of fine-particle crystals each measuring 14 nm or less in two directions perpendicular to a longest side thereof.

A method of producing a phosphor, comprising the step of:

• producing, by using a III-V group compound semiconductor as a material and by laser ablation, a phosphor formed of fine-particle crystals each measuring 14 nm or less in two directions perpendicular to a longest side thereof.