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<p>This study compares the photophysical properties of the newly synthesized graft copolymers, PVK-MeT and PVK-HeT, and the poly(3-alkylthi&#xa0;ophene) homopolymer. The incorporation of Poly(9-vinylcarbazole) (PVK) during the chemical synthesis enabled the formation of a new luminescent organic material, exhibiting a photoluminescence quantum yield (PLQY) of approximately 11–13% in the condensed phase (thin film), and slower decay dynamics compared to that of poly(3-alkylthiophene). The observed improvement in luminescence is primarily due to Förster resonance energy transfer (FRET), in which PVK serves as the donor, and the generated poly(3-alkylthiophene) chains act as the acceptor. The good emission properties of the synthesized materials encourage their exploitation in the next generation of organic light-emitting diodes. Using DFT methodologies, a new OLED architecture is proposed, with the synthesized material as the active layer. The use of a graphene or SWNTc monolayer permits enhanced injection of charge carriers and improved efficiency of the proposed OLED structure.</p>

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Comparative study on the photophysical properties of newly synthesized organic material based on poly(9-vinylcarbazole) (PVK) and poly(3-alkylthiophene) designed for a new generation of organic light-emitting diode

  • 期刊论文

  • 发表日期：

    2026年3月27日

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  • Mourad chemek,
  • Dalila khlaifia,
  • Mohamed Bouachrine,
  • Nuha Wazzan,
  • Alimi Kamel

摘要

This study compares the photophysical properties of the newly synthesized graft copolymers, PVK-MeT and PVK-HeT, and the poly(3-alkylthi ophene) homopolymer. The incorporation of Poly(9-vinylcarbazole) (PVK) during the chemical synthesis enabled the formation of a new luminescent organic material, exhibiting a photoluminescence quantum yield (PLQY) of approximately 11–13% in the condensed phase (thin film), and slower decay dynamics compared to that of poly(3-alkylthiophene). The observed improvement in luminescence is primarily due to Förster resonance energy transfer (FRET), in which PVK serves as the donor, and the generated poly(3-alkylthiophene) chains act as the acceptor. The good emission properties of the synthesized materials encourage their exploitation in the next generation of organic light-emitting diodes. Using DFT methodologies, a new OLED architecture is proposed, with the synthesized material as the active layer. The use of a graphene or SWNTc monolayer permits enhanced injection of charge carriers and improved efficiency of the proposed OLED structure.