Search

CN-122011829-A - Nanoparticle, ink composition, light-emitting device, electronic device, and electronic device

CN122011829ACN 122011829 ACN122011829 ACN 122011829ACN-122011829-A

Abstract

Nanoparticles, ink compositions, light emitting devices, electronic devices, and electronic devices are provided. Each of the plurality of nanoparticles includes a metal oxide nanoparticle represented by formula 1 and a ligand on a surface of the metal oxide nanoparticle, and the ligand includes a carboxyl group, formula 1Ni 1‑x M x O wherein, in formula 1, 0< x <1, and M includes at least one metal element.

Inventors

  • Pu Mingdie
  • LIN ZAIXUN
  • Zheng Yungao
  • CUI RONGGAO

Assignees

  • 三星显示有限公司
  • 成均馆大学校产学协力团

Dates

Publication Date
20260512
Application Date
20251111
Priority Date
20241112

Claims (20)

  1. 1. A nanoparticle, wherein each of a plurality of the nanoparticles comprises: metal oxide nanoparticles represented by formula 1, and A ligand on the surface of the metal oxide nanoparticle, Wherein the ligand comprises a carboxyl group, 1 (1) Ni 1-x M x O Wherein in formula 1, 0< x <1, and M includes at least one metal element.
  2. 2. The nanoparticle according to claim 1, Wherein in formula 1, x satisfies 0< x <0.5.
  3. 3. The nanoparticle according to claim 1, Wherein M comprises Mg, zn, sn, cu, pb, al, in, sr, pd, cd, ag or any combination thereof.
  4. 4. The nanoparticle according to claim 1, Wherein the nanoparticle further comprises a hydroxide.
  5. 5. The nanoparticle according to claim 4, Wherein the hydroxide comprises nickel hydroxide, magnesium hydroxide, zinc hydroxide, tin hydroxide nickel oxyhydroxide, or any combination thereof.
  6. 6. The nanoparticle according to claim 1, Wherein the ligand comprises acetic acid, 4-amino cinnamic acid, 4-trifluoromethyl cinnamic acid, or any combination thereof.
  7. 7. The nanoparticle according to claim 1, Wherein the ligand comprises at least one halogen.
  8. 8. The nanoparticle according to claim 1, Wherein the ligand has a dipole moment greater than 0 debye and less than 6 debye.
  9. 9. An ink composition, wherein the ink composition comprises: the nanoparticle according to any one of claims 1 to 8, and At least one solvent.
  10. 10. A light emitting device, wherein the light emitting device comprises: A first electrode; A second electrode opposite to the first electrode, and An intermediate layer between the first electrode and the second electrode and comprising an emissive layer, Wherein the intermediate layer further comprises a hole transport region between the first electrode and the emissive layer, The hole transport region comprises a plurality of nanoparticles, Each of the plurality of nanoparticles includes a metal oxide nanoparticle represented by formula 1 and a ligand on a surface of the metal oxide nanoparticle, and The ligand includes a carboxyl group: 1 (1) Ni 1-x M x O Wherein in formula 1, 0< x <1, and M includes at least one metal element.
  11. 11. The light-emitting device according to claim 10, Wherein the first electrode is an anode, The second electrode is a cathode electrode and, The intermediate layer further comprises an electron transport region between the emissive layer and the second electrode, The hole transport region comprises a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof, and The electron transport region includes a hole blocking layer, an electron transport layer, an electron injection layer, an electron control layer, or any combination thereof.
  12. 12. The light-emitting device according to claim 11, Wherein the plurality of nanoparticles are in the hole transport layer, the hole injection layer, or both the hole transport layer and the hole injection layer.
  13. 13. The light-emitting device according to claim 10, Wherein the emissive layer comprises quantum dots.
  14. 14. The light-emitting device according to claim 13, Wherein the quantum dot comprises a group III-V semiconductor compound, a group II-VI semiconductor compound, a group III-VI semiconductor compound, a group I-III-VI semiconductor compound, a group IV element or compound, or any combination thereof.
  15. 15. The light-emitting device according to claim 10, Wherein the emission layer is configured to emit light having a maximum emission wavelength of 600nm to 700 nm.
  16. 16. An electronic device, wherein the electronic device comprises the light emitting apparatus according to any one of claims 10 to 15.
  17. 17. An electronic device according to claim 16, Wherein the electronic device further comprises a thin film transistor, Wherein the thin film transistor includes a source electrode and a drain electrode, The first electrode of the light emitting device is electrically connected to the source electrode or the drain electrode.
  18. 18. An electronic device according to claim 17, Wherein the electronic device further comprises a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof.
  19. 19. An electronic device, wherein the electronic device comprises the light-emitting device according to any one of claims 10 to 15.
  20. 20. The electronic device according to claim 19, Wherein the electronic device is at least one selected from the group consisting of a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an interior light, an exterior light, a signal light, a head-up display, a fully or partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a telephone, a cellular phone, a tablet computer, a tablet phone, a personal digital assistant, a wearable device, a laptop computer, a digital camera, a video camera, a viewfinder, a micro-display, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays stitched together, a theatre screen, a stadium screen, a phototherapy device, and a sign.

Description

Nanoparticle, ink composition, light-emitting device, electronic device, and electronic device Cross Reference to Related Applications The present application claims priority and rights of korean patent application No. 10-2024-0160487 filed in the korean intellectual property office on day 11 and 12 of 2024, the entire disclosure of which is incorporated herein by reference. Technical Field One or more aspects of embodiments of the present disclosure relate to nanoparticles, and ink compositions, light emitting devices, electronic devices, and electronic devices including nanoparticles. Background Among the light emitting devices, the self-emission device has a relatively wide viewing angle, high contrast, short response time, and excellent or suitable characteristics in terms of brightness, driving voltage, and response speed. In the light emitting device, a first electrode is on a substrate, and a hole transport region, an emission layer, an electron transport region, and a second electrode are sequentially on the first electrode. Holes supplied from the first electrode move toward the emission layer through the hole transport region, and electrons supplied from the second electrode move toward the emission layer through the electron transport region. Carriers such as holes and electrons recombine in the emissive layer to generate excitons. The excitons may transition (e.g., relax) from an excited state to a ground state, thereby generating light. Disclosure of Invention One or more aspects of embodiments of the present disclosure relate to nanoparticles, and ink compositions, light emitting devices, electronic devices, and electronic devices including nanoparticles. It should be noted, however, that these objects are merely examples and that the scope of the present disclosure is not limited to the aspects mentioned herein. Rather, additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the presented embodiments of the disclosure. According to one or more embodiments of the present disclosure, a nanoparticle includes: Metal oxide nanoparticles represented by formula 1, and A ligand on the surface of the metal oxide nanoparticle, Wherein the ligand comprises a carboxyl group: 1 (1) Ni1-xMxO Wherein in formula 1, 0< x <1, and M includes at least one metal element. According to one or more embodiments, an ink composition includes the nanoparticle and at least one solvent. According to one or more embodiments, a light emitting device includes: The first electrode is arranged to be electrically connected to the first electrode, A second electrode opposite to (e.g., facing) the first electrode, and An intermediate layer between the first electrode and the second electrode and comprising an emissive layer, Wherein the intermediate layer further comprises a hole transport region between the first electrode and the emissive layer, The hole transport region comprises a plurality of nanoparticles, Each of the plurality of nanoparticles includes a metal oxide nanoparticle represented by formula 1, and A ligand on the surface of the metal oxide nanoparticle, and The ligand includes a carboxyl group: 1 (1) Ni1-xMxO Wherein in formula 1, 0< x <1, and M includes at least one metal element. According to one or more embodiments, an electronic device includes the light emitting apparatus. According to one or more embodiments, an electronic device includes the light emitting device. Drawings The accompanying drawings are included to provide a further understanding of the foregoing and other aspects, features, and advantages of one or more embodiments of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate example embodiments that will be apparent from the following description taken in conjunction with the accompanying drawings. In the drawings: Fig. 1 is a schematic diagram of a structure of a light emitting device according to one or more embodiments; Fig. 2 is a schematic cross-sectional view of a structure of a light emitting device as one of the electronic devices in accordance with one or more embodiments; fig. 3 is a schematic cross-sectional view of a structure of a light emitting device as an example of an electronic device in accordance with one or more embodiments; Fig. 4 is a schematic perspective view of an electronic device including a light emitting device in accordance with one or more embodiments. Fig. 5 is a schematic view of an exterior of a vehicle as an electronic device including a light emitting device in accordance with one or more embodiments. FIGS. 6A, 6B, and 6C are each a schematic view of an interior of a vehicle according to one or more embodiments; Fig. 7 is a graph showing energy levels of valence bands of nanoparticles in preparation example 2, preparation example 4, and comparative preparation example 1; Fig. 8 is a graph showing