Mueller M R, Mueller G O, Krames M R, et al. High-power phosphor-converted light-emitting diodes based on III-nitrides[J]. IEEE J. Select. Top. Quant. Elect., 2002, 8 (2):339-345.[2] Narukawa Y, Narita J, Sakamoto T, et al. Recent progress of high efficiency white LEDs [J]. Phys. Status Solidi(a), 2007, 204 (6):2087-2093.[3] Kim J S, Jeon P E, Park Y H, et al. White-light generation through ultraviolet- emitting diode and white-emitting phosphor [J]. Appl. Phys. Lett., 2004, 85 (17):3696-3698.[4] Park J K, Kim C H, Park S H, et al. Application of strontium silicate yellow phosphor for white light-emitting diodes [J]. Appl. Phys. Lett., 2004, 84 (10):1647-1649.[5] Sang Shiyun, Wang Xifeng, Xia Wei, et al. Preparation and encapsulation characteristics of silicate-based phosphor for white-light-emitting LED [J]. Appl. Phys. Lett. (发光学报), 2009, 30 (4):503-508 (in Chinese).[6] Gao Fei, Liang Lifang, Guo Chongfeng. Preparation and luminescence of red ligth-emitting phosphors based on Li3Ba2Ln3-xEux(MoO4)8 by sol-gel method [J]. Chin. J. Lumin. (发光学报), 2009, 30 (5):610-616 (in Chinese).[7] Zhang Mei, Ding Weijia, Wang Jing, et al. Optical properties of Sr1-yEuySi2O2-zN2+2z/3 phosphors and their applications in white LED [J]. Chin. J. Lumin.(发光学报), 2010, 31 (1):31-38 (in Chinese).[8] Sheu J K, Chang S J, Kuo C H, et al. White-light emission from near UV InGaN-GaN LED chip precoated with blue/green/red [J]. IEEE Photon. Technol. Lett., 2003, 15 (1):18-20.[9] Neeraj S, Kijima N, Cheetham A K. Novel red phosphors for solid-state lighting: the system NaM(WO4)2-x(MoO4)x ∶ Eu3+(M=Gd, Y, Bi) [J]. Chem. Phys. Lett., 2004, 387 (1-3):2-6.[10] Yang M, Zhang S Y. The relationship between chemical bond properties and stokes shift of Eu2+ in some silicate host lattices [J]. J. Phys. Chem. Solids, 2003, 64 (2):213-221.[11] IJdo D J W, Jansen J, Schipper W J. The crystal structure of barium bromide silicate(Ba5SiO4Br6) [J]. Materials Research Bulletin, 1992, 27 (1):45-51.[12] Wang J, Li G, Tian S, et al. The composition, luminescence, and structure of Sr8 Cl8 ∶ Eu2+ [J]. Materials Research Bulletin, 2001, 36 (11):2051-2057.[13] Wang H Q, Huang J G, Yu X H, et al. Structure and luminescence properties of alkaline earth chlorosilicates [J]. J. Luminescence, 1988, 40-41 :893-894.[14] Zeng Q H, Tanno H, Egoshi K, et al. Ba5SiO4Cl6 ∶ Eu2+:An intense blue emission phosphor under vacuum ultraviolet and near-ultraviolet excitation [J]. Appl. Phys. Lett., 2006, 88 (5):051906-1-3.[15] Gutt W H, Osborne G J. System 2CaOSiO2-CaF2 [J]. Transactions of the British Ceramic Society, 1966, 65 (9):521-534.[16] Lin H, Zhang X, Huang L H, et al. Luminescent properties of Ce3+-doped halogenosilicate Ca5(SiO4)2X2 [J]. J. Chin. Rare Earth Soc. (中国稀土学报), 1998, 16 (11):1036-1038 (in Chinese).[17] Blasse G. Energy transfer in oxidic phosphors [J]. Philips Res. Repts., 1969, 24 (2):131-144.[18] Dexter L. A theory of sensitized luminescence in solid [J]. J. Chem. Phys., 1953, 21 (5):836-838.[19] Van Uitert L G. Characterization of energy transfer interactions between rare earth ions [J]. J. Electrochem. Soc., 1967, 114 (10):1048-1053.[20] Ozawa L, Jaffe P M. The mechanism of the emission color shift with activator concentration in Eu3+ activated phosphors [J]. J. Electrochem. Soc., 1971, 118 (10):1678-1679.[21] Zhang X X, Xie G W, Shi J X, et al. Enhanced 1.54 μm luminescence from erbium and yttrium co-doped porous silicon [J]. Acta Chimica Sinica (化学学报), 2003, 61 (9):1430-1433 (in Chinese).