Evolution in the Oxidation Valences and Sensitization Effect of Copper Through Modifying Glass Structure and Sn2+/Si Codoping
作者： Tian-Shuai Lv , Xu-Hui Xu , Xue Yu , Jian-Bei Qiu
DOI: 10.1111/JACE.13599
关键词:
摘要: Currently, coupling noble metal species with rare-earth cations (REI) in amorphous materials has attracted persistent attention, owing to the significant rise emission intensity and nonlinear optical response, which allow various potential applications photoelectric fields. However, primary investigations are focused on Au- Ag-doped systems, there few systematic reports concerning interaction between REI different oxidation states of copper so far. Herein, we demonstrated evolution valences from Cu2+ Cu+, then Cu0 (Cu NPs), corresponding effects Tb3+ emissions borate glasses were systematically investigated by modifying glass structure Sn2+/Si codoping. With increasing ratio B2O3 Li2O, enhancement reduction efficiency Cu+ was observed. Impressively, ns2-type Sn2+ centers not only generate efficient sensitizers for but also lead Cu+. Based absorption/transmittance, photoluminescence excitation/emission, time-resolved decay spectra, interplay mechanisms discussed detail.
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