ZHONG Hong-mei, LIU Qian, ZHOU Yao, ZHUANG Jian-dong, ZHOU Hu. Synthesis and Photoluminescence of Mn-Mg Co-doped AlON Phosphors[J]. Chinese Journal of Luminescence, 2013,34(3): 292-296
phosphors co-doped with Mn-Mg were successfully synthesized by solid-state reaction. The results clearly show that the calcination conditions and doping concentration influence the preparation and photoluminescence properties of Mn-doped AlON phosphors. The temperature for obtaining undoped pure phase Al
23
O
27
N
5
sample is 1 900 ℃ for
while is 1 800 ℃ for 10% Mn and 10% Mg(mole fraction) co-doped samples. The lattice parameter increases with Mn concentration
which suggesting Mn
2+
ion doped into AlON crystal lattice. The PL spectra reveal that there exist a broad-band emission from 350 to 600 nm for undoped and all of doped samples. The broad band green emission is observed in 10% Mn and 10%Mg(mole fraction) co-doped sample. The green emission is attributed to the transition of 3d electrons of Mn
2+
ion and the blue emission might be related to impurities or Al vacancy.
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references
Yamamoto H, White LED phosphors: The next step [J]. SPIE, 2010, 7598:759808-1-10.[2] He X H, Lian N, Sun J H, et al. Dependence of luminescence properties on composition of rare-earth actived(oxy)nitrides phosphors for white-LEDs applications [J]. J. Mater. Sci., 2009, 44 (18):4763-4775.[3] Xie R J, Hirosaki N, Mitomo M, et al. Strong green emission from α-SiAlON activated by divalent ytterbium under blue light irradiation [J]. J. Phys. Chem. B, 2005,109 (19):9490-9494.[4] Xie R J, Hirosaki N, Mitomo M, et al. Photoluminescenceal of rare-earth-doped Ca-α-SiAlON phosphors: Composition and concentration dependence [J]. J. Am. Ceram. Soc, 2005,88 (10):2883-2888.[5] Kikkawa S, Nagasaka K, Takeda T, et al. Preparation and lithium doping of gallium oxynitride by ammonia nitridation via a citrate precursor route [J]. Solid State Chem., 2007,180 (3):1984-1989.[6] Li H L, Xie R, Hirosaki N, et al. Phase purity and luminescence properties of fine Ca-α-SiAlON∶Eu phosphors synthesized by gas reduction nitridation method [J]. J.Electrochem.Soc., 2008, 155 (6):J175-J179.[7] Xie R J, Hirosaki N, Li H L, et al. Synthesis and photoluminescence properties of β-sialon∶Eu2+(Si6-zAlzOzN8-z∶Eu2+):A promising green oxynitride phosphor for white light-emitting diodes[J]. J. Electrochem. Soc., 2007,154 (10):J314-J319.[8] Liu L H., Xie R J, Hirosaki N, et al. Optical properties of blue-emitting CexSi6-zAlz-xOz+1.5xN8-z-x for white light-emitting diodes [J]. J. Electrochem.Soc., 2010, 157 (1):H50-H54.[9] Zhu X W, Masubuchi Y, Motohashi T, et al. The z value dependence of photoluminescence in Eu2+-doped β-SiAlON(Si6-zAlzOzN8-z) with 1≤z≤4 [J]. J. Alloys Compds., 2010, 489 (1):157-161. [10] Inoue K, Hirosaki N, Xie R J, et al. High efficient thermally stable blue-emitting AlN∶Eu2+ phosphor for ultraviolet white light-emitting diodes [J]. J. Phys. Chem. C, 2009, 113(21):9392-9397.[11] Li H L, Xie R J, Hirosaki N, et al. Synthesis and photoluminescence properties of Sr2Si5N8∶Eu2+red phosphor by a gas-reduction and nitridation method [J]. J. Electrochem. Soc., 2008, 155 (12):J378-J381. [12] Duan C J, Delsing A C A., Hintzen H T, Red emission from Mn2+ on a tetrahedral site in MgSiN2 [J]. J. Lumin., 2009, 129 (3):645-649. [13] Xie R J, Hirosaki N, Liu X J,et al. Crystal structure and photoluminescence of Mn2+-Mg2+ codoped gamma aluminum oxynitride (γ-AlON):A promising green phosphorfor white light-emitting diodes [J]. Appl. Phys. Lett., 2008, 92 (20):201905 -1-3.[14] Kikkawa S, Hatta N, Takeda T, et al. Preparation of aluminum oxynitride by nitridation of a precursor derived from aluminum-glycine gel and the effects of the presence of europium [J]. J. Am. Ceram. Soc., 2008, 91(3):924-928.[15] Yin L J, Xu L Y, Hao Y, et al. Synthesis and photoluminescence of Eu2+-Mg2+ co-doped γ-AlON phosphors [J]. Matter.Lett., 2009, 6(17):1511-1513.