Janardhanan Sreeram, Kalarical ; Poulose Aby, Cheruvathoor ; Nair, Balachandran Unni ; Ramasami, Thirumalachari (2008) Colored cool colorants based on rare earth metal ions Solar Energy Materials and Solar Cells, 92 (11). pp. 1462-1467. ISSN 0927-0248
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.solmat.2008.06.008
Abstract
Colored pigments with high near infrared reflectance and not based on toxic metal ions like cadmium, lead and cobalt are being sought as cool colorants. Through appropriate doping two pigments Ce-Pr-Mo and Ce-Pr-Fe have been developed to offer a reddish brown and reddish orange color, respectively. These pigments have been characterized and found to be highly crystalline with an average size of 300 nm. A shift in band gap energy from 2.21 to 2.18 eV has been observed when Li2CO3 was used as a mineralizer. Scanning electron microscope-energy dispersive X-ray analysis (SEM-EDAX) measurement indicate a uniform grind shape and distribution of metal ion, with over 65% reflectance in the NIR region, these pigments can well serve as cool colorants.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Cool Coating; Near-infrared Reflectance; Rare Earth Metal Ions; Doping; Crystalline; Particle Size |
| ID Code: | 53348 |
| Deposited On: | 10 Aug 2011 09:57 |
| Last Modified: | 10 Aug 2011 09:57 |
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