Luminescence of bio-synthesized rod like bismuth oxychloride nanoparticles

Nityanand Choudhary and R Shashidhar

  • ANSN Editor
Keywords: nano


Green solution combustion technique has been used to synthesize of ${{\rm{Bi}}}_{0.95}{{\rm{Tb}}}_{0.5}^{3+}{{\rm{Li}}}_{x}{\rm{OCl}}$ (x = 0.1–0.5 mol%) using Mimosa pudica as a fuel. The obtained powders were structurally characterized by powder x-ray diffraction (PXRD), scanning electron microscope (SEM). The peaks of nanophosphor showed matlockite-type tetragonal structure having the space group P4/nmm (no. 129). Transmission electron microscopy (TEM) images evidenced that the particles were rod like structures. The host matrix has shown a narrow green emission when excited with 374 nm, which has its maximum intensity centered at 544 nm due to 5D4 → 7F5. Emission spectra have been used to calculate Judd-Ofelt intensity parameters (Ω2 and Ω4) and other radiative properties. The calculated values of the commission international de l'éclairage (CIE) co-ordinates were closed to national television system committee standard (NTSC) values of green emission.

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