Luminescence study of porous diatoms
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Date
2005-12
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The cathodoluminescent and photoluminescent properties of the nanoporous silica frustules of various diatom strains and of natural diatom samples are presented. The spectra are observed to be similar to that of pure silica glass and the phenology is therefore believed to also be somewhat similar. A strong U-V-blue luminescence peak is commonly observed as well as a yellow peak at 2.15 eV For the more heavily silicified field-collected freshwater benthic samples, a strong red peak at 1.95 eV is also observed. The 2.15 eV peak is also more strongly evident for the field-collected samples. The U-V-blue peak is related to common silica defect structure but cathodoluminescent microanalysis shows that this emission is highly localized in the diatom samples. © 2005, Elsevier Ltd.
Description
Current Trends in Nanoscience - from Materials to Applications Proceedings of the European Materials Research Society 2004 - Symposium G
Keywords
Luminescence, Porous materials, Diatoms, Silica, Phenology, Fresh water
Citation
Butcher, K. S. A., Ferris, J. M., Phillips, M. R., Wintrebert-Fouquet, M., Jong Wah, J. W., Jovanovic, N., Vyverman, W., & Chepurnov, V. A. (2005). A luminescence study of porous diatoms. Paper presented to European Materials Research Society 2004 - Symposium G, 24-28 May 2004, Strasbourg, France, " In Stoneham, M., Grimmeiss, G. & Marletta, G. (Eds), Materials Science & Engineering: C, 25(5-8), 658-663. doi:10.1016/j.msec.2005.06.049