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The Y2O3:Yb3+,Tm3+ nanomaterials are prepared by a combustion method. The sample is excited by 980 nm, thereby producing a bright blue emission transition peak (476 nm and 487 nm) and a weak red emission peak(about 650 nm) that can be clearly observed. More important two ultraviolet emission peaks 1I6→3H6 (~297 nm) and 1D2→3H6 (~363 nm) are found. In addition, the change of upconversion emission intensity dependent on the Yb3+ concentrations was recorded and the possible eauses are discussed. Finally, the pump energy dependences of the emission intensity are investigated. The results show that blue and red emissions originate from a three-photon process and ultraviolet emission peak (363 nm) takes its source at a four-photon process.
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Keywords:
- Y2O3:Yb3+ /
- Tm3+ /
- upconversion spectrum /
- sensitization /
- ultraviolet luminescence
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[14] Aleksandrovsky A S, Gudim I A, Krylov A S, Malakhovskii A V, Temerov V L 2010 J. Alloys.Compd. 496 L18
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[16] Patra A,Saha S, Alencar M 2005 Chem. Phys. Lett. 407 477
[17] Liu H Q, Wang L L, Xiao J W 2006 Mater. Rev. 11 47(in Chinese)[刘晃清、王玲玲、肖经纬 2006 材料导报 11 47 ]
[18] Noginov M A, Curley M, Venkateswarlu P, Williams A, Jenssen H P 1997 J. Opt. Soc. Am. B 14 2126
[19] Chen X B 2007 J. Opt. Soc. Am. B 24 965
[1] Wang Y,Qin W P,Di W H,Zhang J S,Cao C Y 2008 Chin.Phys.B 17 3300
[2] Dai S X, Yang J H, Liu Z P, Wen L, Hu L L, Jiang Z H 2003 Acta Phys. Sin. 52 0729 (in Chinese) [戴世勋、杨建虎、柳祝平、温 磊、胡丽丽、姜中宏 2003 52 0729]
[3] Qin G S, Qin W P, Wu Ch F, Huang Sh H, Zhao D, Zhang J S, Lu S Z 2004 Opt. Commun. 242 215
[4] Liu M, Wang S W, Zhang J, An L Q, Chen L D 2007 Opt.Mater. 30 370
[5] Gan Z S, Yu H, Li Y M, Wang Y N, Chen H, Zhao L J 2008 Acta Phys. Sin. 57 5699 (in Chinese) [甘棕松、余 华、李妍明、王亚楠 、陈 晖、赵丽娟 2008 57 5699]
[6] Wei X J, L iu Y H, Chen D D 2006 Prog. Phys. 26 0168 (in Chinese) [魏新姣、刘粤惠、陈东丹 2006 物理学进展 26 0168]
[7] Xu D Y, Zang J C 2001 J. Synth. Cryst. 30 0203 (in Chinese) [徐东勇、臧竞存 2001人工晶体学报 30 0203]
[8] Meng C, Meng G Z, Song Z F 2001 Spectros. Spect. Anal. 21 142 (in Chinese) [孟 超、孟广政、宋增福 2001 光谱学与光谱分析 21 142]
[9] Lv Q,Zhao L C,Guo F Y,Li M C 2009 Chin.Phys.B 18 4030
[10] Chen G Y, Liu Y, Zhang Z G, Aghahadi B, Somesfalean G, Sun Q, Wang F P 2007 Chem. Phys. Lett. 448 127
[11] Ostermayer F W, vanderZiel J P, Marcos H M, VanUitert L G, Geusic J E 1971 Phys. Rev. B 3 2698
[12] Johnson L F, Guggenheim H J, Rich T C, Ostermayer F W 1972 J. Appl. Phys. 43 1125
[13] Huang S H, Lai S T, Lou L, Jia W Y, Yen W M 1981 Phys. Rev. B 24 59
[14] Aleksandrovsky A S, Gudim I A, Krylov A S, Malakhovskii A V, Temerov V L 2010 J. Alloys.Compd. 496 L18
[15] Zang J C, Xu D Y, Zou Y L 2001 J.Rare.Earth 19 0611(in Chinese) [臧竞存、徐东勇、邹玉林 2001 中国稀土学报 19 0611]
[16] Patra A,Saha S, Alencar M 2005 Chem. Phys. Lett. 407 477
[17] Liu H Q, Wang L L, Xiao J W 2006 Mater. Rev. 11 47(in Chinese)[刘晃清、王玲玲、肖经纬 2006 材料导报 11 47 ]
[18] Noginov M A, Curley M, Venkateswarlu P, Williams A, Jenssen H P 1997 J. Opt. Soc. Am. B 14 2126
[19] Chen X B 2007 J. Opt. Soc. Am. B 24 965
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