INVESTIGATING THE EFFECTS OF SOLVENT AND CONCENTRATION OF ZnO NANOPARTICLES ON THE PROPERTIES OF GREEN-QDLEDS FOR DISPLAY APPLICATIONS

  • Tuan Canh Nguyen Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology (VNU-UET)
  • Duc Cuong Nguyen Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology (VNU-UET)
  • Thi Thao Vu Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology (VNU-UET)
  • Phuong Hoai Nam Nguyen Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology (VNU-UET)
  • Dinh Tu Bui Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology (VNU-UET)
  • Woon-Seop Choi School of Electronics and Display Engineering, Hoseo University, Asan 31499, Chungnam, Korea
Keywords: Quantum dots materials, quantum dot-light emitting diode (QDLEDs), ZnO nanoparticles

Abstract

Colloidal quantum-dot-based green light-emitting diodes (QD-LEDs) are attractive for use in display devices because of the remarkable electrical and optical characteristics of quantum dot materials. In this study, ZnO NPs were synthesized as the carrier transporting layer using a solution-mediated process. After that, all solution- multilayer QD-LEDs with a structure of ITO-Glass/PEDOT:PSS/PVK/Green-QDs/ZnO/Al/Encap was fabricated. The effect of the solvent on the emission layer was investigated, along with the effect of the ZnO NPs concentration of the electron transfer layer. The regular green-QDLED device showed a maximum luminance of 9865 cd/m2, a luminance efficiency of 13.84 cd/A, and an EQE of 3.68%, at a turn-on voltage at 6.0 V.

điểm /   đánh giá
Published
2023-11-24
Issue
Vol. 1 No. 02 (2023)
Section
SCIENTIFIC RESEARCH