npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041


Research Paper

New Phys.: Sae Mulli 2020; 70: 1045-1050

Published online December 31, 2020

Copyright © New Physics: Sae Mulli.

Microwave Synthesis and Luminescent Properties of red Emitting Ca$_{3}$ZrSi$_{2}$O$_{9}$:Eu$^{3+}$ Phosphor for Latent Fingerprint Detection

Woo Tae HONG1, Hyun Kyoung YANG2, Byung Kee MOON3*

1Interdisciplinary Program of LED and Solid state lightng ngineering, Pukyung National University, Busan 48513, Korea

2Department of Electrical, Electronics and Software Engineering, Pukyung National University, Busan 48513, Korea
3Department of Physics, Pukyong National University, Busan 48513, Korea


Received: August 28, 2020; Revised: November 3, 2020; Accepted: November 6, 2020


Ca$_{3}$ZrSi$_{2}$O$_{9}$:Eu$^{3+}$ (CZS:Eu$^{3+}$) phosphors were synthesized by using a microwave irradiation method. The crystal structure, surface morphology and luminescence properties of the phosphors were analyzed for different Eu$^{3+}$ concentrations. The CZS:Eu$^{3+}$ phosphor exhibited their strongest emission at 610 nm under 392-nm excitation. Because the CZS:Eu$^{3+}$ phosphor contains 7 mol% of Eu$^{3+}$, the luminescent intensity at the dominant emission wavelength was maximized. Considering these analysis we applied, the CZS:Eu$^{3+}$ phosphors to detect latent fingerprints on various substrate materials. Under UV excitation, the detected fingerprints showed a red emission with high resolution. The results of this study show that the CZS:Eu$^{3+}$ phosphor can be used as luminescent sensor to detect latent fingerprints.

Keywords: Ca$_{3}$ZrSi$_{2}$O$_{9}$:Eu$^{3+}$, Microwave irradiation, Phosphor

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