A Novel Synthesis of CaWO4∶Eu3+ Flower Like Microcrystals in Ethanol/water Mixed System and Characterization
In this paper,we report a successful synthesis of CaWO4∶Eu3+ phosphor via an ethanol assisted hydrothermal process.X-ray diffraction (XRD) patterns,X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscope (FE-SEM) were used to investigate the growth of the products.The water and ethanol volume ratio is found to have extraordinary effect on the particle size and morphological appearance.Flower like ~ 1 μm superstructures can be obtained with mixed solution of w/e of 50/50 at 120 ℃ hydrothermal sysnthesis for 12 h.High concentration of ethanol in aqueous solution was discovered to have a tendency in limiting the interaction between the small particles for crystallization.Temperature and time experiments were also performed to further investigate the growth mechanism of the ethanol assisted hydrothermal process.The photoluminescence properties of flower like CaWO4∶Eu3+ has also been investigated.
Water/Ethanol Phosphors Tungstate Hydrothermal Synthesis
Yeqing Chen Joo Hyun Lee Sung Wook Park Byung Kee Moon Byung Chun Choi Jung Hvun Jeong Kiwan Jang Ho Sueb Lee Soung Soo Yi
Department of Physics, Pukyong National University, Busan 608-737, South Korea Department of Physics, Changwong National University, Changwon 641-773, Korea Department of Electronic Material Engineering, Silla University, Busan 617-736,Korea
国际会议
广州
英文
512-518
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）