Energy conversion dynamics of novel lanthanide-doped forsterite photoactive devices
| Autor: | Sabrina Arcaro, Claudir Gabriel Kaufmann, Carlos Jacinto, Rúbia Young Sun Zampiva, Tasso O. Sales, Annelise Kopp Alves, Janio Venturini, Carlos Perez Bergmann |
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| Rok vydání: | 2021 |
| Předmět: |
Lanthanide
Photoluminescence Materials science Analytical chemistry General Physics and Astronomy Phosphor 02 engineering and technology engineering.material Downconversion 010402 general chemistry medicine.disease_cause 01 natural sciences Conversão de energia medicine Rare-earth Optical host Dopant Doping Forsterite Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films engineering Propriedades dos materiais 0210 nano-technology Luminescence Ultraviolet Upconversion |
| Zdroj: | Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2021.150059 |
| Popis: | Forsterite (Mg2SiO4) is an easily dopable dielectric oxide with elevated transparency in the ultraviolet (UV), visible (Vis), and near-infrared (NIR) ranges. Despite its properties, the use of forsterite as a phosphor host has not been extensively studied. In this paper, Mg2SiO4 was used as a host for different combinations of Er3+, Eu3+, and Yb3+. The insertion of multiple dopants in the forsterite structure is presented for the first time. DC and UC photoluminescence were measured with excitation at 380, 976, and 1470 nm. Yb3+-doped forsterite showed an elevated UC emission at 480 nm (blue) due to the cooperative luminescence (CL) allowed by the host. Interestingly, the efficiency of the Er3+ UC and DC emissions involving the 4I11/2 level considerably increased in the presence of Eu3+. The Eu3+ ion serves as energy storage for Er3+ in the Mg2SiO4 crystal, presenting a behavior never reported in other hosts. Er3+/Eu3+/Yb3+ co-doped nanoparticles showed the highest DC emission among the samples under 976 nm excitation, indicating the insertion of Eu3+ as an alternative to improve Er3+/Yb3+-doped waveguide amplifiers. Moreover, the Er3+/Eu3+/Yb3+ co-doping resulted in efficient energy conversion from the NIR and UV to the Vis, the main spectral range for solar cell applications. |
| Databáze: | OpenAIRE |
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