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Characterization and optical properties of (Gd1−x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method

หน่วยงาน Central Queensland University, Australia

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ชื่อเรื่อง : Characterization and optical properties of (Gd1−x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method
นักวิจัย : Lian, Jingbao. , Sun, Xudong. , Li, Ji-Guang. , Xiao, Bing. , Duan, Kai.
คำค้น : Ceramics. , Phosphors. , Chemistry, Technical. , Strategic basic research. , 860602 Inorganic Industrial Chemicals. , 861002 Ceramics. , 091201 Ceramics. , 091205 Functional Materials. , 091206 Glass. , Oxysulfide -- Co-precipitation -- Optical properties -- First principles calculation
หน่วยงาน : Central Queensland University, Australia
ผู้ร่วมงาน : -
ปีพิมพ์ : 2553
อ้างอิง : http://hdl.cqu.edu.au/10018/53348
ที่มา : Lian, J, Sun, X, Li, J, Xiao, B & Duan, K 2010, 'Characterization and optical properties of (Gd1-x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method', Materials Chemistry and Physics, vol. 122, no. 2-3, , pp.354-361.http://dx.doi.org/10.1016/j.matchemphys.2010.03.003 (viewed 5/1/11)
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Materials chemistry and physics. Switzerland. : Elsevier S.A., 2010. Vol. 122, no. 2-3 (2010), p. 354-361 8 pages Refereed 0254-0584 , ACQUIRE [electronic resource] : Central Queensland University Institutional Repository.
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A novel co-precipitation method for synthesizing (Gd1-x, Prx)2O2S nano-phosphors was developed, using the commercially available Gd2O3, Pr6O11, H2SO4 and NaOH as the starting materials. This method has the advantage of controllable phosphor particle size and shape, simplicity in processing, low cost, and not involving toxic carbon disulfide or hydrogen sulfide. It was found that the as-synthesized precursor is mainly composed of (Gd1-x, Prx)2(OH)4SO4·nH2O. By calcining the (Gd1-x, Prx)2(OH)4SO4·nH2O precursor at a temperature higher than 700 ◦C for 1 h in flowing hydrogen, pure quasi-spherical shaped (Gd1-x,Prx)2O2S particles can be synthesized. The (Gd1-x, Prx)2O2S particles have a narrow size distribution with a mean grain size of about 20-30 nm. UV-vis spectra indicates that the absorption edge of the samples has a blue shift with increasing calcination temperature, while PL spectra of (Gd1-x, Prx )2O2S under 301nm excitation show a green emission at 511nm as the most prominent peak, which corresponds to the 3P0→3H4 transition of Pr3+ ions. The optimal x value is 0.01 for the highest luminescent emission intensity.

บรรณานุกรม :
Lian, Jingbao. , Sun, Xudong. , Li, Ji-Guang. , Xiao, Bing. , Duan, Kai. . (2553). Characterization and optical properties of (Gd1−x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method.
    กรุงเทพมหานคร : Central Queensland University, Australia.
Lian, Jingbao. , Sun, Xudong. , Li, Ji-Guang. , Xiao, Bing. , Duan, Kai. . 2553. "Characterization and optical properties of (Gd1−x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method".
    กรุงเทพมหานคร : Central Queensland University, Australia.
Lian, Jingbao. , Sun, Xudong. , Li, Ji-Guang. , Xiao, Bing. , Duan, Kai. . "Characterization and optical properties of (Gd1−x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method."
    กรุงเทพมหานคร : Central Queensland University, Australia, 2553. Print.
Lian, Jingbao. , Sun, Xudong. , Li, Ji-Guang. , Xiao, Bing. , Duan, Kai. . Characterization and optical properties of (Gd1−x, Prx)2O2S nano-phosphors synthesized using a novel co-precipitation method. กรุงเทพมหานคร : Central Queensland University, Australia; 2553.