Influence of silver on the Sm3+ luminescence in 'Aerosil' silica glasses

Autor:	A. P. Stupak, G. E. Malashkevich, B. V. Plyushch, G. A. Denisenko, A. V. Semchenko, V. V. Sidskiĭ, A. A. Sukhodola, A. V. Sukhodolov
Rok vydání:	2008
Předmět:	Materials science Hydrogen chemistry.chemical_element Condensed Matter Physics Photochemistry Silver nanoparticle Electronic Optical and Magnetic Materials Ion Samarium chemistry Excited state Qualitative inorganic analysis Luminescence Fumed silica
Zdroj:	Physics of the Solid State. 50:1464-1472
ISSN:	1090-6460 1063-7834
DOI:	10.1134/s1063783408080131
Popis:	The introduction of silver into the samarium-containing silica glasses prepared by the original solgel method leads to the formation of complex optical centers involving samarium ions and simple and/or complex silver ions. These centers are characterized by the effective sensitization of Sm3+ luminescence by Ag+, (Ag2)+, and (Ag+)2 ions according to the exchange mechanism for, at least, Sm3+-Ag+ centers. The formation of Sm-Ag centers is accompanied by an increase in the concentration of nonbridging oxygen ions, which prevent the reduction of silver ions by hydrogen. Silver nanoparticles formed in small amounts upon this reduction are effective quenchers of luminescence from the corresponding excited states of Sm3+ ions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::019e24a95e8cf43bbfd56a6a229abd76 https://doi.org/10.1134/s1063783408080131 Zobrazit plný text záznamu Full text from SpringerLink