caa a22 4500 445367954 CHVBK 20180317142936.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00340-010-4258-5 doi (NATIONALLICENCE)springer-10.1007/s00340-010-4258-5 Influence of the heat treatment on the nucleation of silver nanoparticles in Tm3+ doped PbO-GeO2 glasses [Elektronische Daten] [T. de Assumpção, L. Kassab, A. Gomes, C. de Araújo, N. Wetter] Nucleation of silver nanoparticles (NPs) in Tm3+ doped PbO-GeO2 (PGO) glass is reported. The influence of the heat treatment on the nucleation of silver NPs is studied by means of transmission electron microscopy and optical spectroscopy. Two heat treatment procedures were applied in order to compare their performance. Observation of infrared-to-visible frequency upconversion (UC) luminescence of Tm3+ ions is reported and correlated with the heat-treatment procedure. Enhancement of the UC emission for samples heat treated during various time intervals is attributed to the increased local field in the vicinity of the NPs. Quenching of the UC signal was also observed and correlated with the growth of NPs amount and size. Springer-Verlag, 2010 de Assumpção T. Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica da USP, 05508-900, São Paulo, SP, Brazil aut Kassab L. Laboratório de Vidros e Datação, CEETEPS/UNESP, Faculdade de Tecnologia de São Paulo (FATEC-SP), 01124-060, São Paulo, SP, Brazil aut Gomes A. Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife, PE, Brazil aut de Araújo C. Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife, PE, Brazil aut Wetter N. Centro de Lasers e Aplicações, Instituto de Pesquisas Energéticas e Nucleares, 05508-000, São Paulo, SP, Brazil aut Applied Physics B Springer-Verlag 103/1(2011-04-01), 165-169 0946-2171 103:1<165 2011 103 340 https://doi.org/10.1007/s00340-010-4258-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4258-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- de Assumpção T. Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica da USP, 05508-900, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Kassab L. Laboratório de Vidros e Datação, CEETEPS/UNESP, Faculdade de Tecnologia de São Paulo (FATEC-SP), 01124-060, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Gomes A. Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- de Araújo C. Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Wetter N. Centro de Lasers e Aplicações, Instituto de Pesquisas Energéticas e Nucleares, 05508-000, São Paulo, SP, Brazil aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 103/1(2011-04-01), 165-169 0946-2171 103:1<165 2011 103 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer