Samsung Electronics Co., Ltd.

Hyeonsu Heo

Sung Jun Park

Shin Ae Jun

Tae Gon Kim

Jongmin Lee

Nayoun Won

Taekhoon Kim

Junghwa Kim

Jun Chwae

Mi Hye Lim

Mooho Lee

Dongjin Yun

Kyunghae Lee

Young Mo Sung

A quantum dot including a semiconductor nanocrystal core including Group III-V compound, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, and a composite/electronic device. The quantum dot does not include cadmium and the first semiconductor nanocrystal shell includes a polyvalent metal dopant at an interface with the second semiconductor nanocrystal shell.

Quantum dots and electronic device including the same

A method for preparing a hydrogenation catalyst by mixing a copper salt with colloidal silica to form a precipitate, washing the formed precipitate to remove anions of the copper salt from the precipitate, and impregnating the anion-removed precipitate with an alkali metal to form a hydrogenation catalyst; and a method for preparing a diol from a lactone using the hydrogenation catalyst.

Method for preparing hydrogenation catalyst and method for preparing diols from lactones using the hydrogenation catalyst

Growing community of inventors

Uijeongbu-si, South Korea

Hyeonsu Heo