Abstract
Strong red-emission is observed in the new Eu3+ activated Ba2La4Zn2O10 nanocrystalline material series fabricated via solution combustion methodology. A tetragonal crystal framework withspace group I4/mcm (140) having irregularly shaped grains with sizes between 33 and 62 nm is formed. Morphological aspects are examined via scanning and transmission electron microscopy (SEM and TEM). On near-UV excitation, the photoluminescence spectrum presents a fair red emission at 16129 cm−1 wavenumbers consistent with the electronic transition 5D0→7F2. The energy transfer phenomena are also discussed. The highest luminous intensity is observed for 5.0 mol% of Eu3+ composition with 394 nm excitation. d-d exchanges authorized the presence of the concentration quenching phenomenon. Diffuse reflectance spectroscopy was taken into use to explore the energy band gap which lies in the semiconductor domain. The CIE coordinates lay in the reddish zone of the chromaticity plot, thus confirming their latent contention in pc-WLEDs and other advanced photonic applications.
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