| 光谱学与光谱分析 |
|
|
|
|
|
| Cathodoluminescent Characteristics of Green-Emitting ZnAl2O4∶Mn Thin Film Phosphors |
| LOU Zhi-dong,XU Zheng,YI Lan-jie,YANG Sheng-yi |
| Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044，China |
|
|
|
|
Abstract Green electroluminescence was obtained from thin films of ZnAl2O4∶Mn prepared by rf magnetron sputtering onto thick insulating ceramic sheets. Photoluminescence and stress-stimulated luminescence was obtained for Mn-doped ZnAl2O4 powder synthesized by the solid phase reaction. Since it is extremely stable chemically and thermally, ZnAl2O4 may emerge as an alternative choice to sulphide-based phosphors. In the present paper, thin films of ZnAl2O4∶Mn were grown on aluminosilicate ceramic plates using spray pyrolysis of aqueous solutions. The cathodoluminescence (CL) properties of the films under low to medium excitation voltage (＜5 kV) were investigated. The films exhibited green CL after being annealed at temperatures above 550 ℃, which corresponds to the transition between 4T1 and 6A1 of Mn2+ ions located in the tetra coordination of the Zn2+ site in the spinel structure. The chromaticity coordinates were x=0.150 and y=0.734 with a dominant wavelength of 525 nm and an 82% color purity. The CL luminance and efficiency depended on the excitation voltage and current density. Saturation effects were observed as the current density increased. A luminance of 540 cd·m-2 and an efficiency of 4.5 lm·W-1 were obtained at an excitation voltage of 4 kV with a current density of 38 μA· cm-2.
|
|
Received: 2007-05-10
Accepted: 2007-08-20
|
|
|
|
Corresponding Authors:
LOU Zhi-dong
E-mail: zhdlou@bjtu.edu.cn
|
|
[1] Chakhovskoi A G, Hunt C E, Malinowski M E, et al. J. Vac. Sci. Technol B, 1997, 15(2): 507.
[2] Goldburt E T, Bolchouchine V A, Levonovitch B N, et al. J. Vac. Sci. Technol B, 1999, 17(2): 765.
[3] Holloway P H, Trottier T A, Abrams B, et al. J. Vac. Sci. Technol. B, 1999, 17(2): 758.
[4] Lee S J, Jang J E, Jin Y W, et al. J. Electrochem. Soc., 2001, 148(10): H139.
[5] Zhang F L, Yang S, Stoffers C, et al. Appl. Phys. Lett., 1998, 72(18): 2226.
[6] Jiang Y D, Zhang F, Summers C J, et al. Appl. Phys. Lett., 1999, 74(12): 1677.
[7] Bolchouchine V A, Goldburt E T, Levonovitch B N, et al. J. Vac. Sci. Technol B, 2001, 19(1): 14.
[8] Mathur S, Veith M, Haas M, et al. J. Am. Ceram. Soc., 2001, 84∶ 1921.
[9] Sampath S K, Cordaro J F. J. Am. Ceram. Soc., 1998, 81: 649.
[10] Minami T, et al. In Extend. Abstr. 4th Int. Conf. Science and Technology of Display Phosphors, Bend, OR, 1998. 370.
[11] Matsui H, Xu C N, Tateyama H. Appl. Phys. Lett., 2001, 78: 1068.
[12] Esparza A, Garcia M,!Falcony C. Thin Solid Films, 1998, 325: 14.
[13] Patil P S. Material Chem. and Phys., 1999, 59: 185.
[14] Golego N, Cocivera M. Thin Solid Films, 1998, 322: 14.
[15] Lee Y E, Norton D P, Budai J D. Appl. Phys. Lett., 1999, 74∶ 3155.
[16] Yang S, Stoffers C, Zhang F, et al. Appl. Phys. Lett., 1998, 72: 158. |
| [1] |
YANG Rui-chen1, GENG Xiao-pei1, FAN Zhi-dong1*, LI Xu2, MA Lei3, GAO Yong-hui1, FU Ying1, WANG Xin-xin4. The Optical Stability of SiNWs:Tb3+ and the Effects of Si Nanowires on Its Luminescent Properties[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(03): 682-685. |
| [2] |
LI Song-bo1，2，ZHAO Wen-yu2，FAN Bin2，AN Sheng-li1,3* . Cathodoluminescent Properties of Na2GdPO4F2∶Tb3+ Green Phosphors [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(05): 1181-1184. |
| [3] |
QU Chong1, XU Zheng2, CHEN Yue-ning2 . Investigation of Luminescence Mechanism of Hybrid MEH-PPV/ SiO2 and Super Liner Characteristic of Amorphous SiO2 [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(12): 3223-3227. |
| [4] |
LI Jun-ming, XU Zheng*, ZHAO Su-ling, ZHANG Fu-jun, SONG Dan-dan, LIU Xiao-dong, SONG Jing-lu, XU Xu-rong, WANG Yong-sheng. Evaluating Acceleration Ability of Electrons of Different Acceleration Layers in Solid State Cathodoluminescence[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(11): 2893-2896. |
| [5] |
LIU De-ang, XU Zheng, TENG Feng, ZHAO Su-ling, WANG Yong-sheng, XU Xu-rong* . The Influence of Frequency on Solid State Cathodoluminescence[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 987-990. |
| [6] |
LIU Ming1, 2,CHEN Xiao-hong3,XU Zheng1,TENG Feng1,YI Li-xin1,GAO De-wen2,GUO Li-qun2 . Proof of Solid State Cathodoluminescence by Using Brightness Waveform [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(10): 1556-1559. |
| [7] |
LIU Shan-shan, TENG Feng, XU Zheng, LIU Ming, SUN Shi-ju, XU Xu-rong . The Influence of Thickness of SiO2 on the Electron Acceleration in Cathodluminescence-Like Emission [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(07): 790-794. |
|
|
|
|
