کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5367341 | 1388365 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Sol-gel preparation and characterization of nanoporous ZnO/SiO2 coatings with broadband antireflection properties Sol-gel preparation and characterization of nanoporous ZnO/SiO2 coatings with broadband antireflection properties](/preview/png/5367341.png)
Nanoporous ZnO/SiO2 bilayer coatings were prepared on the surface of glass substrates via sol-gel dip-coating process. The structural, morphological and optical properties of the coatings were characterized. The refractive indices of ZnO layer and SiO2 layer are 1.34 and 1.21 at 550Â nm, respectively. The transmittance and reflectance spectra of the coatings were investigated and the broadband antireflection performance of the bilayer structure was determined over the solar spectrum. The solar transmittances in the range of 300-1200Â nm and 1200-2500Â nm are increased by 6.5% and 6.2%, respectively. The improvement of transmittance is attributed to the destructive interference of light reflected from interfaces between the different refractive-index layers with an optimized thickness. Such antireflection coatings of ZnO/SiO2 provide a promising route for solar energy applications.
⺠Nanoporous ZnO/SiO2 bilayer coatings were prepared via sol-gel dip-coating process. ⺠The broadband antireflection performance was determined over the solar spectrum. ⺠The solar transmittance in 300-2500 nm was increased by 6.4%. ⺠Such antireflection coatings provide a promising route for solar energy applications.
Journal: Applied Surface Science - Volume 257, Issue 23, 15 September 2011, Pages 9752-9756