摘要A new long-lasting phosphorescence (LLP) phosphor, Sr2SnO4:Sm3+ which emits reddish-orange LLP upon UV-excitation, is prepared by a conventional high-temperature solid-state method. After irradiation under 247-nm UV light, Sr2SnO4:Sm3+ emits an intense reddish-orange emission afterglow from the 4G5/2 to 6HJ (J = 5/2,7/2,9/2) transitions. The afterglow decay curve of the Sm3+-doped Sr2SnO4 phosphor contains a fast decay component and another slow decay one. Due to the presence of the slow decay component, the afterglow can be seen with the naked eye in the dark clearly for more than 1 h after removal of the excitation source.
Abstract:A new long-lasting phosphorescence (LLP) phosphor, Sr2SnO4:Sm3+ which emits reddish-orange LLP upon UV-excitation, is prepared by a conventional high-temperature solid-state method. After irradiation under 247-nm UV light, Sr2SnO4:Sm3+ emits an intense reddish-orange emission afterglow from the 4G5/2 to 6HJ (J = 5/2,7/2,9/2) transitions. The afterglow decay curve of the Sm3+-doped Sr2SnO4 phosphor contains a fast decay component and another slow decay one. Due to the presence of the slow decay component, the afterglow can be seen with the naked eye in the dark clearly for more than 1 h after removal of the excitation source.
[1] Matsuzawa T, Aoki Y, Takeuchi N and Maruyama Y 1996 J. Electrochem. Soc. 143 2670 [2] Aitasalo T, Dere\'n P, H\"{olsa J, Jungner H, Krupa J, Lastusaari M, Legendziewicz J, Niittykoski J and Strek W 2003 J. Solid State Chem. 171 114 [3] Wang X, Jia D and Yen W 2003 J. Lumin. 102 34 [4] Kang C, Liu R, Chang J and Lee B 2003 Chem. Mater. 15 3966 [5] Jia D, Meltzer R S, Yen W M, Jia W and Wang X 2002 Appl. Phys. Lett. 80 1535 [6] Trojan-Piegza J, Niittykoski J, H\"{ols\"{a J and Zych E 2008 Chem. Mater. 20 2252 [7] Lin Y, Tang Z and Zhang Z 2001 Mater. Lett. 51 14 [8] Liu Y, Lei B and Shi C 2005 Chem. Mater. 17 2108 [9] Lei B, Li B, Zhang H and Li W 2007 Opt. Mater. 29 1491 [10] Lei B, Liu Y, Ye Z and Shi C 2004 Mater. Chem. Phys. 87 227 [11] Jia D 2007 Chem. Eng. Commun. 194 1666 [12] Kang J and Liu Y 2006 Chin. Phys. Lett. 23 204 [13] Liu B, Shi C, Tao Y and Xiao Z 2005 Chin. Phys. Lett. 22 1256 [14] Cui C, Wang S and Huang P 2009 Acta Phys. Sin. 58 3565 (in Chinese) [15] Lei B, Li B, Zhang H, Zhang L, Cong Y and Li W 2007 J. Electrochem. Soc. 154 H623 [16] Lei B, Li B, Wang X and Li W 2006 J. Lumin. 118 173 [17] Fu W T, Visser D, Knight K S and IJdo D J W 2004 J. Solid State Chem. 177 4081 [18] Chau P T M, Ryu K H and Yo C H 1998 J. Mater. Sci. 33 1299