| Low-Cost Combustion Synthesis, Spectroscopic and
Optoelectronic Analysis of Novel Ba2YAlO5:Er3+
Nanomaterials for Competent Illumination Applications |
Priyanka Sehrawat,a Rajesh Kumar Malik,a, * Rajesh Punia,b Monika Sheoran,a Manisha Bedia
and Hina Dalala
Pages : 234-241
DOI : 10.1080/0371750X.2021.2004238 |
| Abstract |
| In the current prospective study, novel monoclinic symmetry type Ba2YAlO5:Er3+
nanocrystals with an emanation of vivid greenish light have been manufactured via
an ideal, economical and ecological propellant combustion approach. Topographical
investigations disclose roughly spherical agglomerated particles of nano-conduct
(40-65 nm). Optimized content of the activator (Er3+) has been determined as x = 0.03,
after the exigency of luminance quenching directed by the dipole-dipole kind
interactions among the nearest Er3+ ions. The nanocrystals report an intense peak at
549 nm as per 4S3/2ï‚®4I15/2 characteristics transition, excited by 379 nm wavelength,
hence proclaims glowing green luminescence. Decay lifetimes of target samples have
been found to decline from 3.4556±0.0552 to 1.3063±0.0187 ms, with escalating Er3+
content. Excellent luminescent profile is reflected in terms of colour parameters like
green colour coordinates (0.2630, 0.6205) and 90.79% colour purity, which have been
contiguous to standard TV, SD colour green coordinates (0.300, 0.600), European
Broadcasting Union (EBU, 0.290, 0.600) and NICHIA LED (NCSGE17A) green
coordinates (0.252, 0.651). Hence, the overview of present research results
insinuate their optimistic candidacy for advanced illuminating appliances like
white light-emitting diodes (WLEDs) and other lighting applications.
[Keywords: Combustion, Phosphors, Photoluminescence, Opto-electronic, LEDs] |
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