Title |
Luminescence properties of silicon-cellulose nanocomposite
|
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Published in |
Discover Nano, July 2012
|
DOI | 10.1186/1556-276x-7-426 |
Pubmed ID | |
Authors |
Vitaly Pikulev, Svetlana Loginova, Valery Gurtov |
Abstract |
We have characterized the structure and luminescence properties for two-component material composed of nanocrystalline cellulose and nanocrystalline (less to 100 nm) silicon powder. An efficient and stable photoluminescence of nanocomposite, resistant to the influence of gas-phase oxidants, has been found. The obtained material has electret-like properties and demonstrates the possibility of multiple-recharging in an electric field near 5·103 V/cm at temperatures ranging from -70°C to 100°C. The presence of the electric field, as well as ozone or low-temperature plasma treatment, does not change the luminescence spectrum due to quantum size properties of silicon nanoparticles. We believe that these particles may appear in two states: both embedded in a cellulose matrix and in the form of mechanical mixture. |
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