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Effect of vacuum thermal-annealing temperatures on the microstructure and optical properties of single-phased Ag2O film

Zhang Zeng-Yuan Gao Xiao-Yong Feng Hong-Liang Ma Jiao-Min Lu Jing-Xiao

Effect of vacuum thermal-annealing temperatures on the microstructure and optical properties of single-phased Ag2O film

Zhang Zeng-Yuan, Gao Xiao-Yong, Feng Hong-Liang, Ma Jiao-Min, Lu Jing-Xiao
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  • Received Date:  27 May 2010
  • Accepted Date:  30 June 2010
  • Published Online:  15 March 2011

Effect of vacuum thermal-annealing temperatures on the microstructure and optical properties of single-phased Ag2O film

  • 1. Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China

Abstract: A single-phased Ag2O film was deposited on glass substrate by direct-current reactive magnetron sputtering, and was then vacuum thermally annealed at different annealing temperatures (T A) for 1 hour. Effect of the TAon the films microstructure and optical properties was investigated by X-ray diffractometry, scanning electron microscopy and spectrophotometry. The results indicate that Ag nano-scaled particles begin to appear in the annealed Ag2O film at TA= 300 ℃. The Ag content obviously increases with increasing TA, and in particular, Ag2O phase is completely transformed into Ag at T A = 475 ℃. The evolution of the films surface morphology from dense to loose indicates that the diffusion and escape of O atoms from film surface accompanied the thermal decomposition reaction of Ag2O to Ag particles during the vacuum thermal annealing. The changes of the films transmissivity, reflectivity and absorptivity with T A are attributed to the thermal decomposition of Ag2O and the films structure evolution during annealing.

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