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XIE Xiao-jun; LI Qing-shan; DONG Yan-feng; ZHAO Tao

doi:10.3969/j.issn.1001-3806.2011.01.005

In order to study the property of Eu3+ and Li+ co-doped ZnO thin film, it was deposited on the P-type Si (111) substrate by means of pulsed laser deposition(PLD)method with Eu3+ as luminous center and Li+ as the low charged compensated ions and the sensitizer. The photoluminescent(PL) spectra and the X-ray diffraction(XRD) spectra of the film were measured to analyze the crystal structure and photoluminescent property. Through XRD, it can be seen that the ZnO:Eu3+，Li+ film was highly c-axis oriented. In the XRD spectrum, no other crystal orientations were observed except the ZnO crystal orientation. The doping of Eu3+ into ZnO lattice introduced tensile stress, making ZnO crystal lattice spacing larger; but as the oxygen pressure increased, the crystal lattice spacing and lattice constant both had a smaller trend. The PL spectra of the Eu3+, Li+ co-doped ZnO thin film was similar with that of pure ZnO films, but the UV emission peak showed a red-shift phenomenon at about 382nm, and the emission peak was not sharp. When irradiated under the wavelength of 395nm, obvious emission at the wavelength of about 594nm，613nm from the rare-earth element of Eu3+ was observed in the photoluminescence spectra. All the results indicate that the doping elements of Eu3+ and Li+ have incorporated into the crystal lattice of ZnO, and conform the wurtzite structure with Eu3+ as its luminescent centre.

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Corresponding author: LI Qing-shan, qslildu@126.com;

1. Department of Physics, Qufu Normal University, Qufu 273165, China;

2. College of Physics, Ludong University, Yantai 264025, China

Received Date: 2010-04-23

Accepted Date: 2010-06-01

Available Online: 2011-01-25

Abstract: In order to study the property of Eu3+ and Li+ co-doped ZnO thin film, it was deposited on the P-type Si (111) substrate by means of pulsed laser deposition(PLD)method with Eu3+ as luminous center and Li+ as the low charged compensated ions and the sensitizer. The photoluminescent(PL) spectra and the X-ray diffraction(XRD) spectra of the film were measured to analyze the crystal structure and photoluminescent property. Through XRD, it can be seen that the ZnO:Eu3+，Li+ film was highly c-axis oriented. In the XRD spectrum, no other crystal orientations were observed except the ZnO crystal orientation. The doping of Eu3+ into ZnO lattice introduced tensile stress, making ZnO crystal lattice spacing larger; but as the oxygen pressure increased, the crystal lattice spacing and lattice constant both had a smaller trend. The PL spectra of the Eu3+, Li+ co-doped ZnO thin film was similar with that of pure ZnO films, but the UV emission peak showed a red-shift phenomenon at about 382nm, and the emission peak was not sharp. When irradiated under the wavelength of 395nm, obvious emission at the wavelength of about 594nm，613nm from the rare-earth element of Eu3+ was observed in the photoluminescence spectra. All the results indicate that the doping elements of Eu3+ and Li+ have incorporated into the crystal lattice of ZnO, and conform the wurtzite structure with Eu3+ as its luminescent centre.

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Reference (19)

[1]	ZHANG D H,WANG Q P,XUE Zh Y.Ultra violet photoluminescence of ZnO films on different substrates[J].Acta Physica Sinica，2003,52(6):1484-1487(in Chinese).
[2]	LIN B X,FU Zh X,JIA Y B,et al.The ultra violet and green photoluminescence centers in un-doped zinc oxide films[J].Acta Physica Sinica,2001,50(11):2208-2211(in Chinese).
[3]	LEONG E S P,YU S F,LAU S P.Directional edge emitting UV random laser diodes[J].Applied Physics Letters,2006,89(22):2211-2219.
[4]	SONG G L,SUN K X.Study on the visible emission mechanism of nanocrystalline ZnO thin films[J].Acta Photonica Sinica,2006,35(3):389-393(in Chinese).
[5]	LU Sh Ch,SONG G L,XIAO Zh Y,et al.Preparation and nano-crystals ZnO powder and study on its luminescence[J].Chinese Journal of Lumin,2002,23(3):306-310(in Chinese).
[6]	CHE P,MENG J,GUO L.Oriented growth and luminescence of ZnO:Eu flms prepared by sol-gel process[J].Journal of Luminescence,2007,122(26):168-171.
[7]	ISHIZUMI A,TAKAHASHI Y,YAMAMOTO A,et al.Fabrication and optical properties of Eu3+-doped ZnO nanospheres and nanorods[J].Materials Science and Engineering,2008,B146(1/3):212-215.
[8]	WANG M L,HUANG Ch G,HUANG Zh,et al.Synthesis and photoluminescence of Eu-doped ZnO microrods prepared by hydrothermal method[J].Optical Materials,2009,31(10):1502-1505.
[9]	SONG G L,SUN K X,YANG Y T.Preparation and photoluminescence investigation of europium-doped zinc oxide nanocrystalline[J].Spectroscopy and Spectral Analysis,2007,27(4):639-642(in Chinese).
[10]	CHEN L,ZHANG J H,ZHANG X,et al.Synthesis and optical properties of Eu3+,Li+ codoped ZnO:Zn phosphors[J].Journal of Optoelectronics·Laser,2008,19(5):632-635(in Chinese).
[11]	YUDATE S,FUJII T,SHIRAKATA S.Structural properties of Eu-doped GaN flms prepared by RF magnetron sputtering[J].Thin Solid Films,2008,517(4):1453-1456.
[12]	XU S Y,GE W P,WAN G L,et al.Experimental research of the sensitization effect of Eu3+,Sm3+,Tb3+and TTFA polymers[J].Laser Technology,2008,32(6):579-581(in Chinese).
[13]	LIU Sh M,LIU F Q,ZHANG Zh H.Photoluminescence of ZnO:Tb nanoparticles[J].Acta Physica Sinica,2000,49 (11):2307-2309(in Chinese).
[14]	LIU Sh M,XU Zh,LIU F Q,et al.Energy transfer between rare earth ions and nanocrystalline matrix in rare earth doped ZnS nanocrystals[J].Journal of the Chinese Rare Earth Society,2001,19 (6):566-569(in Chinese).
[15]	LU Zh Y,HE F F,XU P Ch,et al.Effects of heat-treatment temperature on Eu3+ and Li+ co-doped ZnO photoluminescence by sol-gel process[J].Journal of Wuhan University of Technology Materials Science,2008,23(1):20-23(in Chinese).
[16]	KANG M,XIE K N,LU Zh Y,et al.Preparation of nanometer material ZnO:Eu ,Li with red fluorescence by the sol-gel method[J].Journal of Sichuan University (Engineering Science Edition),2005,37(1):65-68(in Chinese).
[17]	LIANG D C,LI Q Sh,ZHANG L C,et al.The effect of growth parameters and post-processing on the optical properties of ZnO thin films[J].Laser Journal,2008,29(5):74-76(in Chinese).
[18]	CULLITY B D.Elements of X-ray diffraction[M].2nd ed.Hardcover:Addision-Wesley Publishing Company,1978:292-295.
[19]	University of Science and Technology of China.Solid luminescence[M].Beijing:Institute of Physics,Chinese Academy of Sciences,1976:374-377(in Chinese).

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