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CN-121991692-A - Nanoparticles, methods of making the same, and compositions, composites, and devices

CN121991692ACN 121991692 ACN121991692 ACN 121991692ACN-121991692-A

Abstract

Nanoparticles, methods of making the same, and compositions, composites, and devices are provided. The nanoparticle includes a semiconductor nanocrystal including zinc, indium, and selenium. In the semiconductor nanocrystals, the molar ratio of indium to selenium (In: se) is greater than or equal to about 0.1:1 and less than or equal to about 0.5:1. The nanoparticle does not include cadmium, and the nanoparticle is configured to emit a first light. The peak emission wavelength of the first light is greater than or equal to about 480 nanometers and less than or equal to about 700 nanometers.

Inventors

  • JIN SHANYING
  • Cai Zhuren
  • JIN MINHAO
  • SUN DALONG
  • YANG CHENGLIN
  • JIN ZEXUN
  • Zhao Kenxi
  • Quan xiujing
  • JIN TAIKUN
  • Yuan Nayuan

Assignees

  • 三星电子株式会社

Dates

Publication Date
20260508
Application Date
20251104
Priority Date
20241106

Claims (19)

  1. 1. A method for preparing a nano-particle, The nanoparticle comprises a semiconductor nanocrystal comprising zinc, indium, and selenium, Wherein the molar ratio of indium to selenium in the semiconductor nanocrystal is greater than or equal to 0.1:1 and less than or equal to 0.5:1, Wherein the nanoparticle does not include cadmium, and The nanoparticle is configured to emit first light, and a peak emission wavelength of the first light is greater than or equal to 480 nanometers and less than or equal to 700 nanometers.
  2. 2. The nanoparticle according to claim 1, Wherein the semiconductor nanocrystals do not include silver, copper, manganese, cobalt, or combinations thereof.
  3. 3. The nanoparticle according to claim 1, Wherein the molar ratio of indium to selenium in the semiconductor nanocrystal is greater than or equal to 0.13:1 and less than or equal to 0.43:1.
  4. 4. The nanoparticle according to claim 1, Wherein the molar ratio of indium to the sum of zinc and indium in the semiconductor nanocrystal is greater than or equal to 0.02:1 and less than or equal to 0.8:1.
  5. 5. The nanoparticle according to claim 1, Wherein the molar ratio of zinc to selenium in the semiconductor nanocrystal is greater than or equal to 0.35:1 and less than or equal to 1.34:1.
  6. 6. The nanoparticle according to claim 1, Wherein in the semiconductor nanocrystal, a charge balance value obtained by the formula is greater than or equal to 0.8 and less than or equal to 1.8: charge balance value = {2[ zn ] +3[ in ] }/(2 [ se ]) Wherein [ Zn ], [ In ] and [ Se ] are the molar amounts of zinc, indium and selenium, respectively, in the semiconductor nanocrystal or In the nanoparticle.
  7. 7. The nanoparticle according to claim 1, Wherein the first light has a full width at half maximum of greater than or equal to 50 nanometers and less than or equal to 200 nanometers, and Wherein the peak emission wavelength of the first light is greater than or equal to 500 nanometers and less than or equal to 680 nanometers.
  8. 8. The nanoparticle according to claim 1, Wherein, in the ultraviolet-visible absorption spectrum, the nanoparticle has an absorption edge in a range of greater than or equal to 380 nanometers and less than or equal to 540 nanometers.
  9. 9. The nanoparticle according to claim 1, Wherein, in the ultraviolet-visible absorption spectrum, the nanoparticle has a first absorption peak wavelength of greater than or equal to 380 nanometers and less than or equal to 500 nanometers.
  10. 10. The nanoparticle according to claim 1, Wherein the nanoparticle has a cone shape.
  11. 11. A method of preparing the nanoparticle of claim 1, the method comprising: the indium precursor, the selenium precursor and the zinc precursor are contacted in an organic solvent in the presence of an organic ligand at a reaction temperature, Wherein the reaction temperature is greater than or equal to 230 ℃ and less than or equal to 380 ℃.
  12. 12. The method according to claim 11, Wherein the method comprises preparing a reaction solution comprising an indium precursor, a selenium precursor, and an organic ligand in an organic solvent, heating the reaction solution to a reaction temperature, and adding a zinc precursor to the reaction solution.
  13. 13. The method of claim 11, wherein the reaction solution does not include dodecyl mercaptan.
  14. 14. The method of claim 11, wherein the organic solvent comprises a C5 to C40 primary amine compound, and Wherein the amount of primary amine compound is greater than or equal to 30% and less than or equal to 100% based on the total volume of the organic solvent.
  15. 15. The method of claim 11, wherein the reaction temperature is greater than or equal to 280 ℃ and less than or equal to 320 ℃.
  16. 16. A composition comprising the nanoparticle of claim 1 and a liquid carrier.
  17. 17. A composite comprising a matrix and a plurality of nanoparticles dispersed in the matrix, Wherein the plurality of nanoparticles comprises the nanoparticle of claim 1.
  18. 18. A display device comprising the nanoparticle according to claim 1.
  19. 19. An electronic device, comprising: A first electrode and a second electrode spaced apart from each other, and An active layer disposed between the first electrode and the second electrode, The nanoparticle of claim 1, wherein the active layer comprises a nanoparticle.

Description

Nanoparticles, methods of making the same, and compositions, composites, and devices The present application is based on and claims priority and ownership of korean patent application No. 10-2024-0156446 filed in the korean intellectual property office on the date 11 and 6 of 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field Disclosed are semiconductor nanoparticles, methods of manufacturing semiconductor nanoparticles, compositions comprising semiconductor nanoparticles and a liquid carrier, semiconductor nanoparticle composites comprising a matrix and a plurality of nanoparticles dispersed in the matrix, display devices comprising semiconductor nanoparticles, and electronic devices comprising semiconductor nanoparticles. Background Semiconductor nanoparticles may exhibit different aspects, characteristics, or properties than corresponding bulk (bulk) materials having substantially the same composition. For example, semiconductor nanoparticles may have different physical properties (e.g., band gap energy, luminescent properties, etc.) based on the nanostructure. The semiconductor nanoparticles may be configured to emit light when excited by incident light or an applied voltage. Luminescent nanostructures may find applicability in a variety of devices, such as display panels or electronic devices comprising display panels. From an environmental point of view, it is interesting and desirable to develop luminescent nanoparticles that do not contain harmful heavy metals (such as cadmium) and still achieve comparable or improved one or more luminescent or optical properties. Disclosure of Invention One aspect relates to a particle (hereinafter, may also be referred to as a nanoparticle or semiconductor nanoparticle) including a semiconductor nanocrystal, the particle configured to emit light of a desired wavelength. One aspect relates to a method for manufacturing semiconductor nanoparticles or groups of semiconductor nanoparticles (deposition). One aspect relates to a composition (e.g., an ink composition) comprising semiconductor nanoparticles or a population of semiconductor nanoparticles. One aspect relates to a semiconductor nanoparticle composite comprising a semiconductor nanoparticle or a population of semiconductor nanoparticles. One aspect relates to a color conversion panel or display device comprising a semiconductor nanoparticle or a population of semiconductor nanoparticles. One aspect relates to an electronic device (e.g., a group of semiconductor nanoparticles or semiconductor nanoparticles included in a color conversion panel of an electronic device or display device) that includes the semiconductor nanoparticles or the group of semiconductor nanoparticles. In an embodiment, a nanoparticle includes a semiconductor nanocrystal including zinc, indium, and selenium, and in the semiconductor nanocrystal, a molar ratio of indium to selenium is greater than or equal to about 0.1:1 and less than or equal to about 0.5:1, the nanoparticle does not include cadmium, and the nanoparticle is configured to emit a first light, and a peak emission wavelength of the first light is greater than or equal to about 480 nanometers (nm) and less than or equal to about 700nm. The semiconductor nanocrystals may include a group 12-13-16 compound comprising (or consisting of) zinc, indium, and selenium. The semiconductor nanocrystals may not include silver, copper, or a combination thereof. The semiconductor nanocrystals may not include manganese, cobalt, or a combination thereof. The semiconductor nanocrystals may have a tetragonal (tetragonal) structure. The molar ratio of indium to selenium (In: se) In the semiconductor nanocrystal or the nanoparticle may be greater than or equal to about 0.13:1, or greater than or equal to about 0.2:1. The molar ratio of indium to selenium (In: se) In the semiconductor nanocrystal or the nanoparticle may be less than or equal to about 0.43:1, or less than or equal to about 0.4:1. In the semiconductor nanocrystals, the molar ratio of indium to selenium (In: se) can be greater than or equal to about 0.13:1 and less than or equal to about 0.43:1. In the semiconductor nanocrystal or the nanoparticle, the molar ratio of indium to the sum of zinc and indium (In (zn+in)) can be greater than or equal to about 0.02:1, or greater than or equal to about 0.09:1 and less than or equal to about 0.8:1, or less than or equal to about 0.75:1. In the semiconductor nanocrystals, the molar ratio of indium to the sum of zinc and indium (In (zn+in)) can be greater than or equal to about 0.02:1 and less than or equal to about 0.8:1. In the semiconductor nanocrystals or the nanoparticles, the molar ratio of indium to the sum of zinc and indium (In (zn+in)) can be greater than or equal to about 0.1:1, or greater than or equal to about 0.25:1. The molar ratio of indium to the sum of zinc and indium (In (zn+in)) In the semiconductor nanocrystal or the nanoparti