中国物理B ›› 2007, Vol. 16 ›› Issue (1): 95-99.doi: 10.1088/1009-1963/16/1/017

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The influence of nickel dopant on the microstructure and optical properties of SnO2 nano-powders

周伟列1, 刘春明2, 方丽梅2, 祖小涛3   

  1. (1)Advanced Materials Research Institute, University of New Orleans, New Orleans LA 70148, USA; (2)Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China; (3)Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China;International Center for Material Physics, Chinese Academy of Sciences, Shenyang 110015, China
  • 收稿日期:2006-02-22 修回日期:2006-07-21 出版日期:2007-02-01 发布日期:2007-02-01
  • 基金资助:
    Project supported by the NSAF Joint Foundation of China (Grant No 10376006), the Program for New Century Excellent Talents in University of China (Grant No NCET-04-0899), the Ph.D. Funding Support Program of Education Ministry of China.

The influence of nickel dopant on the microstructure and optical properties of SnO2 nano-powders

Liu Chun-Ming(刘春明)a), Fang Li-Mei(方丽梅)a), Zu Xiao-Tao(祖小涛)a)b)†, and Zhou Wei-Lie(周伟列)c)   

  1. a Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China; b International Center for Material Physics, Chinese Academy of Sciences, Shenyang 110015, China; c Advanced Materials Research Institute, University of New Orleans, New Orleans LA 70148, USA 
  • Received:2006-02-22 Revised:2006-07-21 Online:2007-02-01 Published:2007-02-01
  • Supported by:
    Project supported by the NSAF Joint Foundation of China (Grant No 10376006), the Program for New Century Excellent Talents in University of China (Grant No NCET-04-0899), the Ph.D. Funding Support Program of Education Ministry of China.

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摘要： The microstructure and optical properties of Ni-doped SnO2 nano-powders are studied in detail. By Ni-doping, not only the grain size reduces, but also the grain shape changes from nano-rods to spherical particles. The crystallization becomes better with annealing temperature increasing. The band gap energy decreases as nickel doping level increases. The sp--d hybridization and alloying effect due to amorphous SnO2-X phase should be responsible for the band gap narrowing effect. Nickel dopant does not change the photoluminescence (PL) peak positions.

关键词: microstructure, optical absorption spectra, photoluminescence spectra, SnO2

Abstract: The microstructure and optical properties of Ni-doped SnO2 nano-powders are studied in detail. By Ni-doping, not only the grain size reduces, but also the grain shape changes from nano-rods to spherical particles. The crystallization becomes better with annealing temperature increasing. The band gap energy decreases as nickel doping level increases. The sp--d hybridization and alloying effect due to amorphous SnO2-x phase should be responsible for the band gap narrowing effect. Nickel dopant does not change the photoluminescence (PL) peak positions.

Key words: microstructure, optical absorption spectra, photoluminescence spectra, SnO2

中图分类号:  (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))

  • 61.46.Df
61.05.cp (X-ray diffraction) 78.55.-m (Photoluminescence, properties and materials) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters) 81.40.Ef (Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization)