Nichia Corporation

Osaka University

Tokai National Higher Education and Research System

Yuki Mori

Tsukasa Torimoto

Susumu Kuwabata

Tatsuya Kameyama

Daisuke Oyamatsu

Taro Uematsu

Hiroki Yamauchi

Chie Miyamae

Provided is a method for manufacturing a semiconductor nanoparticle, the method includes performing a heat treatment of a first mixture containing a silver (Ag) salt, an alkali metal salt, a salt containing at least one of indium (In) and gallium (Ga), a sulfur source, and an organic solvent. A ratio of the number of atoms of an alkali metal to the total number of atoms of Ag and the alkali metal in the first mixture is greater than 0 and less than 1.

Semiconductor nanoparticle, method for manufacturing same, and light emitting device

Semiconductor nanoparticles are provided. The semiconductor nanoparticles contains Ag, at least one of In and Ga, and Se. An Ag content is 10 mol % to 30 mol %, a total content of the at least one of In and Ga is 15 mol % to 35 mol %, and an Se content is 35 mol % to 55 mol % in the semiconductor nanoparticles. The semiconductor nanoparticles emit light having an emission spectrum with a peak emission wavelength in a range of 500 nm to 900 nm, and a half bandwidth of 250 meV or less upon irradiation with light in a wavelength range of 350 nm to less than 500 nm.

Semiconductor nanoparticles, method of producing the semiconductor nanoparticles, and light-emitting device

A method of producing semiconductor nanoparticles, semiconductor nanoparticles, and a light-emitting device are provided. The method includes heat-treating a mixture containing a salt of Ag, a salt containing at least one of In and Ga, an Se supply source, and an organic solvent at a temperature in the range of above 200&#xb0; C. to 370&#xb0; C. In the method, the ratio of the number of Ag atoms to the total number of In and Ga atoms in the mixture is above 0.43 to 2.5. The semiconductor nanoparticles contains Ag, at least one of In and Ga, and Se. The light-emitting device includes a light conversion member containing the semiconductor nanoparticles and a semiconductor light-emitting element.

Growing community of inventors

Nagoya, Japan

Yuki Mori