Light-emitting material, method of preparing the same, and light-emitting device including the light-emitting material
AssigneeSamsung Electronics Co., Ltd.
InventorsDaeyong Son, YongChul Kim
Life of this patent
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Abstract
A light-emitting material, including: a quantum dot represented by Formula 1; and Pb(SCN)2, wherein a surface of the quantum dot is passivated by the Pb(SCN)2, and wherein the light-emitting material has a stretching vibrational peak corresponding to a carbon-nitrogen triple bond in a range of about 2000 inverse centimeter to about 2100 inverse centimeter, as measured by infrared (IR) spectroscopy: A1B1X13 Formula 1 wherein, in Formula 1, A1 is at least one of a monovalent organic cation or a monovalent inorganic cation, B1 is Sn or Pb, and X1 is at least one halogen.
Claims19
A light-emitting material, comprising:
- a quantum dot represented by Formula 1;
- and
- Pb(SCN)2,
- wherein a surface of the quantum dot is passivated by the Pb(SCN)2, and
- wherein the light-emitting material has a stretching vibrational peak corresponding to a carbon-nitrogen triple bond in a range of about 2000 inverse centimeter to about 2100 inverse centimeter, when measured by infrared (IR) spectroscopy:
- A1B1X13 Formula 1
- wherein, in Formula 1,
- A1 is at least one of a monovalent organic cation or a monovalent inorganic cation,
- B1 is Sn or Pb, and
- X1 is at least one halogen,
- wherein the light-emitting material has diffraction peaks corresponding to at least four crystal planes that are a (002) crystal plane, a (100) crystal plane, a (110) crystal plane, a (112) crystal plane, a (200) crystal plane, a (210) crystal plane, a (212) crystal plane, a (220) crystal plane, or a (310) crystal plane, when determined by X-ray diffraction (XRD) analysis.
A method of preparing a light-emitting material, the method comprising:
- disposing a mixture comprising a quantum dot, Pb(SCN)2, and a solvent onto a substrate, wherein the quantum dot is represented by Formula 1;
- and
- heating the substrate to remove the solvent and form the light-emitting material,
- wherein a surface of the quantum dot is passivated by the Pb(SCN)2:
- A1B1X13 Formula 1
- wherein, in Formula 1,
- A1 is at least one of a monovalent organic cation or a monovalent inorganic cation,
- B1 is Sn or Pb, and
- X1 is at least one halogen,
- wherein the light-emitting material has diffraction peaks corresponding to at least four crystal planes that are a (002) crystal plane, a (100) crystal plane, a (110) crystal plane, a (112) crystal plane, a (200) crystal plane, a (210) crystal plane, a (212) crystal plane, a (220) crystal plane, or a (310) crystal plane, when determined by X-ray diffraction (XRD) analysis.
Dependencies are inferred from the claim text.