Photoluminescence Properties of Eu2+, Dy3+, Li+ Co-doped CaSi2O2N2 Phosphors

doi:10.3724/SP.J.1077.2012.11775

Abstract

Abstract: A series of CaSi₂O₂N₂: 0.05Eu²⁺, xDy³⁺, xLi+ (0≤x≤0.03) phosphors were prepared through high-temperature solid-state reaction method. The phosphors were characterized by X-ray diffraciton (XRD) and fluorescence spectrophotometer (PL). XRD patterns revealed that the samples maintained CaSi₂O₂N₂ single phase after doping Dy³⁺ or Li⁺ ions. The PL results showed that the excitation spectra of samples were all located in the UV to blue spectral region. The emission spectra for 400 nm excitation showed the typical broad band of Eu²⁺ peaking at about 545 nm (5d-4f). In addition, the emission intensity could be greatly enhanced through doping Dy³⁺ in CaSi₂O₂N₂:Eu²⁺ phosphors. Furthermore, the effect of the Li⁺ doping was studied. Li⁺ ions could be used as charge compensation in CaSi₂O₂N₂:Eu²⁺, Dy³⁺ phosphors. Thus the doping of Li+ ions could further improve the emission intensity of CaSi₂O₂N₂:Eu²⁺, Dy³⁺ phosphor. When the doping concentrations of Dy³⁺ and Li+ were 1mol%, the emission intensity reached a maximum, which was about 157% of that of the sample without doping Dy³⁺ or Li+.

Key words: phosphors, co-doping, luminescence, LED

CLC Number:

O482

LU Ya-Jun, WANG Hong-Zhi, LI Yao-Gang, ZHANG Qing-Hong. Photoluminescence Properties of Eu²⁺, Dy³⁺, Li⁺ Co-doped CaSi₂O₂N₂ Phosphors[J]. Journal of Inorganic Materials, 2012, 27(10): 1095-1098.

References

[1] Schubert E F, Kim J K. Solid-state light sources getting smart. Science, 2005, 308 (5726): 1274–1278.

[2] Baur J, Schlotter P, Schneider J. White Light Emitting Diodes. Reinhard Helbig. Advances in Solid State Physics 37. Germany: Springer, 1998: 67–78.

[3] Bachmann V, Ronda C, Oeckler O, et al. Color point tuning for (Sr, Ca, Ba)Si2O2N2:Eu2+ for white light LEDs. Chemistry of Materials, 2009, 21(2): 316–325.

[4] Li Y Q, Delsing A C A, With G de, et al. Luminescence properties of Eu2+-activated alkaline-earth silicon-oxynitride MSi2O2-δN2+2/3δ (M = Ca, Sr, Ba): a promising class of novel LED conversion phosphors. Chemistry of Materials, 2005, 17(12): 3242–3248.

[5] Xie R J, Hirosaki N, Mitomo M. Strong green emission from α-SiAlON activated by divalent ytterbium under blue light irradiation. Journal of Physical Chemistry B, 2005, 109(19): 9490–9494.

[6] Liu R S, Liu Y H, Bagkar N C. Enhanced luminescence of SrSi2O2N2:Eu2+ phosphors by codoping with Ce3+, Mn2+, and Dy3+ ions. Applied Physics Letters, 2007, 91(6): 061119–1–3.

[7] Yu X B, Xu X L, Zhou C L, et al. Synthesis and luminescent properties of SrZnO2:Eu3+, M+ (M = Li, Na, K) phosphor. Materials Research Bulletin, 2006, 41(8): 1578-1583.

[8] Liu X L, Han K, Gu M, et al. Effect of codopants on enhanced luminescence of GdTaO4:Eu3+ phosphors. Solid State Communications, 2007, 142(12): 680–684.

[9] Dhananjaya N, Nagabhushana H, Nagabhushana B M, et al. Effect of Li+-ion on enhancement of photoluminescence in Gd2O3:Eu3+ nanophosphors prepared by combustion technique. Journal of Alloys and Compounds, 2011, 509(5): 2368–2374.

[10] Guan L, Jia G Q, Yang B Z, et al. Synthesis and optical properties of Dy3+, Li+ doped CaMoO4 phosphor. Journal of Rare Earths, 2011, 29(6): 540–543.

[11] H?ppe H A, Stadler F, Oeckler O, et al. Ca[Si2O2N2] – a novel layer silicate. Angewandte Chemie International Edition, 2004, 43(41): 5540–5542.

[12] Fanf Y, Zhuang W D, Hu Y S, et al. Luminescent properties of green phosphor Ca8Mg(SiO4)4Cl2:Eu2+, Dy3+ for LED applications. Journal of Rare Earths, 2007, 25(5): 573–577.

[13] Liu J, Lian H Z, Shi C S. Improved optical photoluminescence by charge compensation in the phosphor system CaMoO4:Eu3+. Optical Materials, 2007, 29(12): 1591–1594.

[1]	YANG Yingkang, SHAO Yiqing, LI Bailiang, LÜ Zhiwei, WANG Lulu, WANG Liangjun, CAO Xun, WU Yuning, HUANG Rong, YANG Chang. Enhanced Band-edge Luminescence of CuI Thin Film by Cl-doping [J]. Journal of Inorganic Materials, 2023, 38(6): 687-692.
[2]	SHI Yanlei, SUN Niefeng, XU Chengyan, WANG Shujie, LIN Peng, MA Chunlei, XU Senfeng, WANG Wei, CHEN Chunmei, FU Lijie, SHAO Huimin, LI Xiaolan, WANG Yang, QIN Jingkai. Thermal Field of 6-inch Indium Phosphide Single Crystal Growth by Semi-sealed Czochralski Method [J]. Journal of Inorganic Materials, 2023, 38(3): 335-342.
[3]	WANG Zhiqiang, WU Ji’an, CHEN Kunfeng, XUE Dongfeng. Large-size Er,Yb:YAG Single Crystal: Growth and Performance [J]. Journal of Inorganic Materials, 2023, 38(3): 329-334.
[4]	LU Chenhui, GE Wanyin, SONG Panpan, ZHANG Panfeng, XU Meimei, ZHANG Wei. Luminescence Property of Eu Doped SiAlON Phosphors for White LEDs [J]. Journal of Inorganic Materials, 2023, 38(1): 97-104.
[5]	LIU Qi, ZHU Can, XIE Guizhen, WANG Jun, ZHANG Dongming, SHAO Gangqin. Optical Absorption and Photoluminescence Spectra of Ce-doped SrMgF₄Polycrystalline with Superlattice Structure [J]. Journal of Inorganic Materials, 2022, 37(8): 897-902.
[6]	GUAN Xufeng, LI Guifang, WEI Yunge. Microstructure and Thermal Quenching Characteristics of Na_1-_xM_xCaEu(WO₄)₃ (M=Li, K) Red Phosphor [J]. Journal of Inorganic Materials, 2022, 37(6): 676-682.
[7]	ZHANG Guoqing, QIN Peng, HUANG Fuqiang. Reversible Conversion between Space-confined Lead Ions and Perovskite Nanocrystals for Confidential Information Storage [J]. Journal of Inorganic Materials, 2022, 37(4): 445-451.
[8]	LI Qi, HUANG Yi, QIAN Bin, XU Beibei, CHEN Liying, XIAO Wenge, QIU Jianrong. Photo Curing and Pressureless Sintering of Orange-emitting Glass-ceramics [J]. Journal of Inorganic Materials, 2022, 37(3): 289-296.
[9]	SHI Siqi, SUN Shiyu, MA Shuchang, ZOU Xinxin, QIAN Quan, LIU Yue. Detection Method on Data Accuracy Incorporating Materials Domain Knowledge [J]. Journal of Inorganic Materials, 2022, 37(12): 1311-1320.
[10]	DU Aochen, DU Qiyuan, LIU Xin, YANG Yimin, XIA Chenyang, ZOU Jun, LI Jiang. Ce:YAG Transparent Ceramics Enabling High Luminous Efficacy for High-power LEDs/LDs [J]. Journal of Inorganic Materials, 2021, 36(8): 883-892.
[11]	LIU Fangfang, CHUAN Xiuyun, YANG Yang, LI Aijun. Influence of N/S Co-doping on Electrochemical Property of Brucite Template Carbon Nanotubes [J]. Journal of Inorganic Materials, 2021, 36(7): 711-717.
[12]	WANG Zhaowu, JI Haipeng, WANG Feixiang, HOU Xinghui, YI Shasha, ZHOU Ying, CHEN Deliang. Valence State Control of Manganese in MgAl₂O₄:Mn⁴⁺ Phosphor by Varying the Al₂O₃ Crystal Form [J]. Journal of Inorganic Materials, 2021, 36(5): 513-520.
[13]	XIA Zhaoyang, WANG Hui, FANG Jinghong, ZHANG Yang, WANG Chaoyue, HE Huan, NI Jinqi, SHI Yun, LI Qin, YU Jianding. Co Incorporation on Structure, Conductivity and Magnetism of GaFeO₃ [J]. Journal of Inorganic Materials, 2021, 36(3): 319-324.
[14]	ZHANG Cong, LI Yurou, SHAO Kang, LIN Jing, WANG Kai, PAN Zaifa. Luminescence Property of the Multicolor Persistent Luminescence Materials for Dynamic Anti-counterfeiting Applications [J]. Journal of Inorganic Materials, 2021, 36(12): 1256-1262.
[15]	XIAO Yumin, Li Bin, QIN Lizhao, LIN Hua, LI Qing, LIAO Bin. Efficient Preparation of CuGeO₃ with Controllable Morphology Using CuCl₂ as Copper Source [J]. Journal of Inorganic Materials, 2021, 36(1): 69-74.

Photoluminescence Properties of Eu²⁺, Dy³⁺, Li⁺ Co-doped CaSi₂O₂N₂ Phosphors

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments