Luminescence Mechanism of ZnWO₄ Nanopowder Synthesized by Microwave-Assisted Heating

Abstract:

The luminescence investigations on the calcinated zinc tungstate nanopowder (ZnWO₄ NP) synthesized by microwave-assisted synthesis are presented using photoluminescence (PL) and time-resolved photoluminescence (TRPL) analyses. The X-ray diffraction (XRD) patterns exhibit that the significant wolframite structure of ZnWO₄ NP can be detected at calcination temperatures above 300 °C. The 12 K PL and TRPL results demonstrated that the deformation of WO₆ octahedra is responsible for the low-energy side of PL spectra and dominate the red-shifted PL spectra with increasing calcination temperatures.

• Periodical: Applied Mechanics and Materials (Volume 470)
• Pages: 44-47
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.470.44
• Online since: December 2013
• Authors: Ming Kwen Tsai, Yueh Chien Lee*, Chia Chih Huang, Sheng Yao Hu, Kwong Kau Tiong, Bo Yao Hong
• Keywords: Nanopowder, Photoluminescence (PL), Zinc Tungstate

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