Enhanced Photoluminescence of Europium-Doped TiO₂ Nanoparticles Using a Single-Source Precursor Strategy

Area of Science:

• Materials Science
• Nanotechnology
• Photochemistry

Background:

• Titanium dioxide (TiO2) nanoparticles are widely used in various applications.
• Doping TiO2 with rare-earth elements like Europium (Eu3+) can enhance its optical and electronic properties.
• Efficient synthesis methods are crucial for optimizing dopant incorporation and performance.

Purpose of the Study:

• To synthesize Eu3+-doped TiO2 nanoparticles using a single-source precursor (SSP) method.
• To compare the electro-optical properties of SSP-derived nanoparticles with those prepared by impregnation.
• To investigate the structural and morphological characteristics of the synthesized nanomaterials.

Main Methods:

• One-pot sol-gel synthesis using a heterometallic Eu-Ti precursor.
• Europium salt impregnation onto TiO2 substrate for comparative analysis.
• Characterization using elemental analysis, XRD, SEM, TEM, STEM, BET, TGA, XPS, Raman, and PL spectroscopy.

Main Results:

• Both methods yielded TiO2:Eu3+ nanoparticles with dispersed dopants.
• SSP-derived nanomaterials showed significantly superior electro-optical properties.
• Enhanced efficiency in SSP materials is linked to optimized TiO2 core-amorphous surface interface for charge transfer.

Conclusions:

• The single-source precursor (SSP) approach is a highly effective method for synthesizing Eu3+-doped TiO2 nanoparticles.
• SSP synthesis leads to improved charge transfer and superior electro-optical performance compared to impregnation.
• This study highlights the potential of SSPs for advanced nanomaterial design.