Journal Articles (All Issues)

Abstract

Ca2Al2SiO7 phosphors doped with various Tb3+ ion concentration, Ca2Al2SiO7: xTb3+ (x = 0.5, 1.0, 1.5, 2.0, 2.5 and 3.5 mol%) have been successfully synthesized by a solid-state reaction method at high-temperature 1280oC. The X-ray diffraction diagram shows that the material has single-phased tetragonal structure. Photoluminescent study indicated that Ca2Al2SiO7: xTb3+ phosphors reach to the highest emission intensity at x = 0.15 mol% and the luminescence quenching phenomenon occurs with higher concentration. The mechanism of concentration quenching process is determined due to the dipole-dipole interaction and the critical distance (Rc) was determined, Rc = 26.7 Å. The chromaticity coordinates of Ca2Al2SiO7: xTb3+ phosphors were also presented.

References

[1] Son N M, Tien D T, Duong T T, Luyen P N, Tam N N, Hung N N & Cang L T, Int J Eng Res Technol, 8, 1509 (2019). [2] Cai, J, H Pan & Y Wang, Rare Metals, 30, 374 (2011). [3] Geetanjali T, Ravi S, Bisen D P, Sanjay K S & Ishwar P S, Luminescence, 23, 15 (2016). [4] Teixeira V C, Montes P J R & Valerio M E G, Opt Mater, 36, 1580 (2014). [5] Tien D T, Son N M, Tuat L V & Liem L N, IOP Conf Ser Mater Sci Eng, 540, 012001 (2018). [6] Haiyan J & Yuhua W J, Electrochem Soc, 156, 117 (2009). [7] Geetanjali T, Nameeta B, Bisena D P, Sanjay KS & Ravi S, Phys Procedia, 6, 53 (2015). [8] Tushagu A, Sangaraju S, Ying W, Ayituerxun A, Taximaiti Y, Hairegu T & Aierken S, J Electron Mater, Doi.10.1007/s11664-018-6668-1 (2018). [9] Q. Zhang, J. Wangu, M. Zhang, W. Din & Q. Su, Appl Phys Lett, 88, 805 (2007). [10] Son N M, Tien D T & Son L V T, Int J Eng Res Technol, 8, 248 (2019). [11] Haoyi W, Yihua H, Guifang J, Li C, Xiaojuan W & Zhongfu Y, J Lumin, 131, 2441 (2011). [12] Tien D T & Son N M, Tap Chi Khoa Hoc (Hue), 128, 5 (2019). [13] Penghui Y, Xue Y, Hongling Y, Tingming J, Xuhui X, Zhengwen Y, Dacheng Z, Zhiguo S, Yong Y, Zongyan & Jianbei Q, J Lumin, 135, 206 (2013). [14] Zhang F, Wang Y & Tao Y, Mater Res Bull, 48, 1952 (2013). [15] Li P L, W Y S, Zhao S L, Zhang F J & Xu Z, Chin. Phys. B, 21, 1278041 (2012). [16] Minhong L, Lili W, Weiguang R, Zhihan D, Jinsheng S & Chunyan R, Materials (Basel), 10, 1 (2017).