Volume 6 Issue 6
Dec.  2013
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SHEN Zhen-feng. Preparation of specific refractive index material and optical thin films[J]. Chinese Optics, 2013, 6(6): 900-905. doi: 10.3788/CO.20130606.900
Citation: SHEN Zhen-feng. Preparation of specific refractive index material and optical thin films[J]. Chinese Optics, 2013, 6(6): 900-905. doi: 10.3788/CO.20130606.900

Preparation of specific refractive index material and optical thin films

  • Received Date: 13 Sep 2013
  • Rev Recd Date: 16 Nov 2013
  • Publish Date: 10 Dec 2013
  • A material with specific refractive index is prepared according to the requirement for the preparation of the laser protective coating for solar arrays. In this method, we apply the electron beam co-evaporation technique based on doped material preparation methods. Tests show that the refractive index of the doped material is 1.75, according with the result of optimized scheme. The material is then used in the preparation of optical thin films to achieve a further optimization of the laser protective coating properties. Obtained laser protective coating has excellent properties and its solar radiation transmittance is increased by more than 6%. The film thickness mask technology is applied to improve the film thickness uniformity of large area thin films prepared by co-evaporation method. The thickness nonuniformity of doped material film prepared by this method within 400 mm area is less than 2.1%. It is showed that the technical process of electron beam co-evaporation technique is simple, reliable and suitable for practical applications. Test results of the film performance are consistent with the theoretical optimized results.

     

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