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<p>A series of perylene (Pery) doped 4-nitrophenol (4-NP) luminophors (Pery/4-NP) were synthesized using a conventional solid-state reaction method. Energy transfer processes in the excited state were investigated through fluorescence spectroscopy, Ultraviolet–Visible (UV-Vis) analysis, and Tauc plot evaluation. Fluorescence studies indicated exciplex formation at higher dopant concentrations, evidenced by broad and structureless emission spectra, along with monomer quenching of 4-NP. The Pery/4-NP system exhibited strong green emission in the range of 500–650&#xa0;nm, with a maximum at 600&#xa0;nm. Structural analysis via X-Ray Diffraction (XRD) confirmed the formation of homogeneous crystalline phases, and scanning electron microscopy (SEM) revealed well-defined nanoscale morphology. Thermogravimetric analysis (TGA) demonstrated the material’s good thermal stability. Optical characterization, as determined by UV–Visible spectroscopy and Tauc plot analysis, and cyclic voltammetry (CV) analysis revealed a direct bandgap of 2.7&#xa0;eV, indicating strong UV absorption and suitability for optoelectronic applications. These combined optical, structural, and thermal properties suggest that the Pery/4-NP luminophors are promising candidates for use as hole-transporting materials in organic optoelectronic devices.</p>

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Perylene/4-Nitrophenol Based Green Light Emitting Luminophors as Efficient Hole-Transport Materials for Organic Optoelectronics

  • 期刊论文

  • 发表日期：

    2026年2月5日

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  • K. G. Mane,
  • A. J. Ghoti,
  • P. B. Nagore

摘要

A series of perylene (Pery) doped 4-nitrophenol (4-NP) luminophors (Pery/4-NP) were synthesized using a conventional solid-state reaction method. Energy transfer processes in the excited state were investigated through fluorescence spectroscopy, Ultraviolet–Visible (UV-Vis) analysis, and Tauc plot evaluation. Fluorescence studies indicated exciplex formation at higher dopant concentrations, evidenced by broad and structureless emission spectra, along with monomer quenching of 4-NP. The Pery/4-NP system exhibited strong green emission in the range of 500–650 nm, with a maximum at 600 nm. Structural analysis via X-Ray Diffraction (XRD) confirmed the formation of homogeneous crystalline phases, and scanning electron microscopy (SEM) revealed well-defined nanoscale morphology. Thermogravimetric analysis (TGA) demonstrated the material’s good thermal stability. Optical characterization, as determined by UV–Visible spectroscopy and Tauc plot analysis, and cyclic voltammetry (CV) analysis revealed a direct bandgap of 2.7 eV, indicating strong UV absorption and suitability for optoelectronic applications. These combined optical, structural, and thermal properties suggest that the Pery/4-NP luminophors are promising candidates for use as hole-transporting materials in organic optoelectronic devices.