Structural and Optical Properties of MgxZn1-xO Nanofilms Prepared by Sol-gel Method

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (10): 1830.

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Structural and Optical Properties of Mg_xZn_1-xO Nanofilms Prepared by Sol-gel Method

LI Jin-Hua¹, ZHANG Xin-Tong^2,3, LIU Yi-Chun^1,2, GUO Wei³, BAI Yu-Bai³, LI Tie-Jin³

1. Institute of Theoretical Physics, Northeast NormaLUniversity, Changchun 130024, China;
2. Key Lab of Excited State Process of Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun 130021, China;
3. Colloge of Chemistry, Jilin University, Changchun 130023, China

Received:2002-03-29 Online:2003-10-24 Published:2003-10-24

Abstract

Abstract: Nanofilms of Mg_xZn_1-xO with different Mg contents were fabricated by sol-gel method.The XRD spectra indicated that the films were hexagonal wurtzite structure with 3-5 nm grain size and the lattice constant of Mg _xZn_1-xO gradually decreased with increasing Mg content.The UV-Vis absorption spectra showed that the band gap energy increased and the exciton peak had an obvious blue-shift with increasing Mg content.The strong deep level emission demonstrated that oxygen vacancy increased with the content of Mg atoms entering ZnO lattice.To obtain high quality Mg_xZn_1-xO thin films, Mg_0.03Zn_0.97O film was annealed at 700℃ in oxygen ambient.The UV-Vis absorption spectrum and the PLspectrum demonstrated that high quality films could be obtained by annealing.

Key words: Sol-gel method, Mg_xZn_1-xO nanofilms, XRD, Photoluminescence

CLC Number:

O614.24

TrendMD:

LI Jin-Hua, ZHANG Xin-Tong, LIU Yi-Chun, GUO Wei, BAI Yu-Bai, LI Tie-Jin . Structural and Optical Properties of Mg_xZn_1-xO Nanofilms Prepared by Sol-gel Method[J]. Chem. J. Chinese Universities, 2003, 24(10): 1830.

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Structural and Optical Properties of Mg_xZn_1-xO Nanofilms Prepared by Sol-gel Method

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