Green color emitting pure cubic zirconia nano phosphor synthesized by solution combustion technique

Cubic zirconia nanoparticles were fabricated via low temperature combustion of zirconyl nitrate at 400 °C using (i) glycine (ZrO₂-1) and (ii) glycine assisted ammonium nitrate (ZrO₂-2) as fuel. Impact of preparational condition on the structural, optical, and dielectric properties of the attained ZrO₂ were explored from X-ray diffraction analysis, Uv–visible spectroscopy, Fourier transform infrared analysis, and field emission scanning electron microscopy. Band gap of the samples as calculated by Tauc’s method was found to be 4.7 eV (ZrO₂-1) and 4.9 eV (ZrO₂-2). PL emission in the visible region with a sharp peak centered at 516 nm has been probed by exciting the sample with UV radiation of 254 -nm wavelength. CIE and CCT coordinates show that PL emission is in pure green region and color temperature is above 10,000 K indicating that the emission is a cool color suitable for LCD and CRT displays. Search for high-K dielectric material with large band gap is a prime requirement for devices in microelectronic. ZrO₂ is a high-K material used in the manufacturing of capacitors in DRAM. Frequency response of dielectric constant ( \(\varepsilon \mathrm{^{\prime}}\) $\epsilon {}^{\prime }$ and \(\varepsilon\) $\epsilon$ ″), Impedance Z \(\mathrm{^{\prime}}\) ${}^{\prime }$ and Z″ has been recorded in the frequency range 100 Hz to 5 MHz. Dielectric constant value “ε” is found to be around 50 in the frequency range between 900 kHz and 3 MHz.