Bi2O3:Dy3+ nanophosphors: its white light emission and photocatalytic activity

被引：12

作者：

Ashwini, S. ^{[1
,2
]}

Prashantha, S. C. ^{[2
]}

Naik, Ramachandra ^{[3
]}

Nagabhushana, H. ^{[4
]}

Jnaneshwara, D. M. ^{[5
]}

Narasimhamurthy, K. N. ^{[6
]}

机构：

[1] VTU, Dept Phys, Channabasaveshwara Inst Technol, Gubbi 572216, India

[2] VTU, East West Inst Technol, Dept Phys, Res Ctr, Bengaluru 560091, India

[3] New Horizon Coll Engn, Dept Phys, Bengaluru 560103, India

[4] Tumkur Univ, Prof CNR Rao Ctr Adv Mat, Tumkur 572103, India

[5] VTU, Dept Phys, SJB Inst Technol, Bengaluru 560060, India

[6] Govt First Grade Coll, Dept Phys, Tumkur 572102, India

来源：

SN APPLIED SCIENCES | 2019年 / 1卷 / 09期

关键词：

Photoluminescence; Judd-Ofelt; Color chromaticity coordinates (CIE); Correlated color temperature (CCT); Bi2O3:Dy3+; VIOLET EXCITED PHOTOLUMINESCENCE; OPTICAL-PROPERTIES; JUDD-OFELT; ALUMINATE NANOPHOSPHOR; DOPED ZNO; LUMINESCENCE; PHOSPHOR; K+; DEGRADATION; PERFORMANCE;

D O I：

10.1007/s42452-019-1047-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The present work involves the synthesis, characterization, photoluminescence and photocatalytic studies of Dy3+ (1-11 mol%) doped Bi2O3 nanophosphors (NPs) by solution combustion method. The average crystallite size was determined using powder X-ray diffraction, found to be in the range of 15-30 nm. Scanning electron microscopy images shows that the synthesised product is porous and agglomerated. Kubelka-Munk function was used to assess the energy gap of Dy3+ doped Bi2O3 nanophosphors and it was found to be 2.53-3.00 eV. From the emission spectra, Judd-Ofelt parameters (Omega(2) and Omega(4)), transition probabilities (A(T)), quantum efficiency (eta), luminescence lifetime (tau(r)), color chromaticity coordinates (CIE) and correlated color temperature values were estimated and discussed in detail. The CIE chromaticity co-ordinates were close to the National Television Standard Committee standard value of white emission. Using La ngnnuir-Hinshelwood model, the photocatalytic activity results of Acid Red-88 showed, Bi2O3:Dy3+ NPs were potential material for the development of efficient photocatalyst for environmental remediation. The obtained results prove that the Bi2O3:Dy3+ NPs synthesised by this method can be potentially used for solid state display and photocatalyst.

引用

页数：10

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