Influence of TiO2 host crystallinity on Er3+ light emission
| Autor: | Brian Julsgaard, Søren Roesgaard, Sabrina R. Johannsen, A. Nylandsted Larsen, Jacques Chevallier, Peter Balling, Sanjay K. Ram, R. A. S. Ferreira |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Anatase
Photoluminescence Materials science EUROPIUM 02 engineering and technology 01 natural sciences Crystallinity 0103 physical sciences AMPLIFIERS 010302 applied physics DOPED TIO2 Sputter deposition 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials Amorphous solid NANOCRYSTALS Chemical engineering 13. Climate action UP-CONVERSION LUMINESCENCE CELLS TITANIA THIN-FILMS Light emission Crystallite 0210 nano-technology Luminescence |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Johannsen, S R, Nielsen, S R, Julsgaard, B, Ferreira, R A S, Chevallier, J, Balling, P, Ram, S & Larsen, A N 2016, ' Influence of TiO 2 host crystallinity on Er 3+ light emission ', Optical Materials Express, vol. 6, no. 5, pp. 1664-1678 . https://doi.org/10.1364/OME.6.001664 |
| DOI: | 10.1364/OME.6.001664 |
| Popis: | This work presents a study of the luminescence properties of Er3+ when included into two different TiO2 hosts: a polycrystalline and an amorphous host. The two host environments were produced by depositing two thin films with different Er3+ concentration using radio-frequency magnetron sputtering. Structural analysis revealed the presence of the rutile and anatase phases in the polycrystalline film. Time-resolved and steady-state photoluminescence measurements evidenced the presence of two distinct local Er3+ environments in the polycrystalline host. For the amorphous TiO2 host, only one Er3+ environment was observed, which differed from the two environments in the polycrystalline host. A method for extracting a fast and slow time-resolved emission spectrum from the two observed local environments in the polycrystalline host is also presented. (C) 2016 Optical Society of America |
| Databáze: | OpenAIRE |
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