Blue light emitting Sr2MgSi2O7:Eu2+ nanophosphor for latent fingerprint, anti-counterfeiting and near UV-LED applications

被引：35

作者：

Srinivasa, P. R. ^{[1
]}

Krushna, B. R. Radha ^{[2
]}

Malleshappa, J. ^{[1
]}

Sharma, S. C. ^{[3
]}

Manjunatha, K. ^{[4
]}

Wu, Sheng Yun ^{[4
]}

Prasad, B. Daruka ^{[5
]}

Karthikeyan, P. F. ^{[6
]}

Komahal, Femila ^{[7
]}

Nagabhushana, H. ^{[2
]}

机构：

[1] Tumkur Univ, Univ Coll Sci, Dept Phys, Tumkur 572103, India

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

[3] Jain Univ, Law & Forens Mat, Bangalore 560069, Karnataka, India

[4] Natl Dong Hwa Univ, Dept Phys, Hualien 97401, Taiwan

[5] BMS Inst Technol & Management, Dept Phys, Bangalore 560064, India

[6] Mahatma Gandhi Med Coll & Res Inst, Dept ENT, Pondicherry 607402, India

[7] Nrupathunga Univ, Dept Phys, Bangalore 560001, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 674卷

关键词：

Phosphor; Latent fingerprints; Powder dusting; Anti-counterfeiting inks; NUV light-emitting diode; OPTICAL-PROPERTIES; LUMINESCENCE PROPERTIES; ENERGY-TRANSFER; SENSITIZED LUMINESCENCE; LABELING AGENT; PHOSPHOR; DY3+; PHOTOLUMINESCENCE; VISUALIZATION; NANOPOWDERS;

D O I：

10.1016/j.colsurfa.2023.131857

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Eu2+ doped Sr2MgSi2O7:Eu2+ nanophosphors (SMSO:Eu2+ NPs) have been synthesized by using solid-state reaction method. As Eu2+ concentration increases, energy transfer (ET) between Eu2+ ions dominated attributed to dipole-dipole (d-d) interaction. Besides, temperature-dependent photoluminescence (PL) of optimized SMSO:7Eu(2+) NPs is investigated. The emission shifts towards blue with increased temperature. From the temperature-dependent emission, the activation energy, is similar to 0.40 eV. CIE coordinate is (0.1476, 0.1141) with CCT value of 3633 K. The optimized phosphor is used to detect LFPs on various surfaces. The level I-III features are clearly identified under UV 365 nm excitation. Several pores properties namely pore size, shape, number, position, type and pore inter-distance are analyzed in detail. The anti-counterfeiting results clearly showed the enhanced intensity owing to its nano-size, reduced light dispersion and increased light absorption. The overall results clearly suggest the optimized SMSO:7Eu(2+) NPs are promising luminescent platform for nUV light-emitting diode (LED) and latent fingerprint (LFP) applications.

引用

页数：19

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