Green/yellowish-white color-tunable up-conversion phosphor prepared from Er/Yb-polyoxoaluminoniobate complex
作者： Haruo Naruke , Toshihiro Yamase
DOI: 10.1016/J.JALLCOM.2004.08.072
关键词:
摘要: Abstract A new NaNbO 3 -based up-conversion phosphor doped with Yb 3+ , Er and Al was prepared by thermal decomposition of polyoxoaluminoniobate precursor, Na 6 H 18 [Er x 6− (H 2 O) (OH) O (Nb 19 ) 5 ]· n ( = 1–6), at 700 °C for 2 h. near infrared (980 nm) light excitation a laser diode (LD) into the : 4 I 11/2 ← 15/2 absorption band Yb-free sample = 6) resulted in visual emission consisting mainly green S 3/2 → (520–550 nm) red F 9/2 (660 nm) bands . In presence = 0.063–5), overall much enhanced as result effective photon 5/2 7/2 followed efficient energy transfer to It found that ratio green/red intensities /Yb -codoped samples depends on an pulse width: CW or long 980 nm (>2 ms) causes yellowish-white emission, while shorter
elsevier.com
sci-hub.se 参考文章(17)
A. P. Pivovarova, V. I. Strakhov, V. P. Popov, Phase Relations in the LaNb3O9 – NaNbO3 System in the Temperature Range of 20 TO 800°C Refractories and Industrial Ceramics. ,vol. 42, pp. 285- 287 ,(2001) , 10.1023/A:1012718529213
Daisuke Matsuura, Red, green, and blue upconversion luminescence of trivalent-rare-earth ion-doped Y2O3 nanocrystals Applied Physics Letters. ,vol. 81, pp. 4526- 4528 ,(2002) , 10.1063/1.1527976
P. N. Iyer, A. J. Smith, Double oxides containing niobium, tantalum, or protactinium. III. Systems involving the rare earths Acta Crystallographica. ,vol. 23, pp. 740- 746 ,(1967) , 10.1107/S0365110X67003639
Charles M. Flynn, Galen D. Stucky, Heteropolyniobate complexes of manganese(IV) and nickel(IV) Inorganic Chemistry. ,vol. 8, pp. 332- 334 ,(1969) , 10.1021/IC50072A029
A. C. Sakowski-Cowley, K. Łukaszewicz, H. D. Megaw, The structure of sodium niobate at room temperature, and the problem of reliability in pseudosymmetric structures Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. ,vol. 25, pp. 851- 865 ,(1969) , 10.1107/S0567740869003141
Tetsuhiro Katsumata, Yoshiyuki Inaguma, Mitsuru Itoh, New perovskite-type lithium ion conductors, LaxMyLi1−3x−yNbO3 (M=Ag and Na) Solid State Ionics. ,vol. 113-115, pp. 465- 469 ,(1998) , 10.1016/S0167-2738(98)00311-7
J.P. Wittke, I. Ladany, P.N. Yocom, Y2O3 : Yb : Er‐New Red‐Emitting Infrared‐Excited Phosphor Journal of Applied Physics. ,vol. 43, pp. 595- 600 ,(1972) , 10.1063/1.1661163
Takayuki Hirai, Takuya Orikoshi, Preparation of Gd2O3:Yb,Er and Gd2O2S:Yb,Er infrared-to-visible conversion phosphor ultrafine particles using an emulsion liquid membrane system. Journal of Colloid and Interface Science. ,vol. 269, pp. 103- 108 ,(2004) , 10.1016/J.JCIS.2003.08.026
ICMS Santos, LH Loureiro, MFP Silva, Ana MV Cavaleiro, None, Studies on the hydrothermal synthesis of niobium oxides Polyhedron. ,vol. 21, pp. 2009- 2015 ,(2002) , 10.1016/S0277-5387(02)01136-1
Zilan Shen, Paul E Burrows, Vladimir Bulovic, Stephen R Forrest, Mark E Thompson, Three-Color, Tunable, Organic Light-Emitting Devices Science. ,vol. 276, pp. 2009- 2011 ,(1997) , 10.1126/SCIENCE.276.5321.2009