کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
80967 | 49412 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optical characterization of tandem absorber/reflector systems based on titanium oxide–carbon coatings Optical characterization of tandem absorber/reflector systems based on titanium oxide–carbon coatings](/preview/png/80967.png)
The use of chemical methods to produce coatings with good spectrally selective properties is described. Sol–gel and dipping techniques were combined to fabricate thickness-sensitive solar-selective absorbing coatings based on titanium oxide combined with carbon black (TiO2/CB) and carbon nanotubes (TiO2/CNT) on top of stainless-steel substrates. The low to high reflectance transition (λT) observed in the tandem system based on TiO2/CB films was smooth and red shifted when compared to the sharp transition observed in systems based on mesoporous TiO2/CNT films. Mesoporosity of the oxide was controlled by the use of polymeric surfactants with different molecular weights, causing a significant blue shift in λT as the molecular weight increases. These films were characterized by X-ray diffraction and UV–vis light absorption spectroscopy.
Journal: Solar Energy Materials and Solar Cells - Volume 91, Issues 15–16, 22 September 2007, Pages 1421–1425