STM Journals Peer-reviewed research from Consortium e-Learning Network

Journal of Polymer & Composites Original Research Special issue

Integration of Semi-Interpenetrating Polymer Networks and Quantum Dot–Polymer Nanocomposites for Low-Cost, Flexible OLED Display

  1. T. Premkumar Department of Mechanical Engineering, SRM Madurai College for Engineering and Technology, Pottapalaiyam
  2. T. CH Anil Kumar Department of Mechanical Engineering, Vignan's Foundation for Science Technology and Research, Vadlamudi, Guntur Dt.
  3. Prajeesh Raj V. Department of Aeronautical Engineering, Jawaharlal College of Engineering and Technology, Ottapalam
  4. P. Mohankumar Department of Mechatronics Engineering,Sona College of Technology, Salem.
  5. Pravin P. Pawar Department of Physics, Thakur College of Science and Commerce, Kandivali, Mumbai
  6. P. Neopolean Department of Mechanical Engineering, SCAD College of Engineering and Technology, Cheranmahadevi
  7. S. Kalaiselvan Department of Chemistry, Rathinam Technical Campus, Coimbatore
  8. Avinash Kumar Department of Mechanical Engineering, Cambridge Institute of Technology, Ranchi

Abstract

Flexible OLED displays need advanced material systems to integrate capabilities for mechanical flexibility as well as thermal stability and environmental durability at low costs. Semi-interpenetrating polymer networks (SIPNs) combined with quantum dot (QD)-polymer nanocomposites serve to improve OLED performance capabilities. They combine a stable structural design along with a flexible matrix through the matrix capabilities of SIPNs which result in efficient luminescence and pure color output courtesy of CdSe/ZnS QDs with quantum confinement effects. Laboratory technicians used thin-film deposition methods to make OLED devices while developing optimized charge injection layers for better exciton recombination. Electrical and optical property analysis by UV-Vis absorption and photoluminescence (PL) and electroluminescence (EL) spectra showed the material exhibited broad absorption and stable emission performance. OLEDs passed 1000 bending tests maintaining 90% of their initial luminance stability and showing negligible resistance fluctuations during the tests. The thermal stability of the composite material was established through TGA testing up to 300 °C but performance reduction occurred after 60 days of exposure to high humidity conditions according to testing results. The combination of SIPN-QD nanocomposites acts to boost OLED durability and efficiency and stability under environmental conditions thereby making them suitable for future flexible display systems.

Keywords

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