NIR upconversion emission of Tm 3+ doped glassceramics for solar cells applications
| Autor: | F. Lahoz, Ulises R. Rodríguez-Mendoza |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Energy transfer upconversion
Materials science Infrared Band gap Biophysics Analytical chemistry 02 engineering and technology Laser pumping 010402 general chemistry 01 natural sciences Biochemistry law.invention law Crystalline silicon Glass-ceramic business.industry Doping General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Photon upconversion 0104 chemical sciences Optoelectronics 0210 nano-technology business |
| Zdroj: | Journal of Luminescence. 179:40-43 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2016.06.052 |
| Popis: | The Tm 3+ 800 nm upconversion emission corresponding to the 3 H 4 → 3 H 6 transition has been obtained upon infrared sub-Si bandgap excitation at 1210 nm in Tm 3+ doped transparent glasses and glass ceramics with composition SiO 2 –Al 2 O 3 –CdF 2 –PbF 2 –YF 3 . Possible energy transfer mechanisms have been carefully studied through different experimental measurements such as the excitation spectrum, decay rate of the emission and laser pump power versus integrated emission. The results suggest that energy transfer upconversion (ETU) mechanism is responsible for the emission. It is based on the following process: Tm 3+ ( 3 F 4 )+Tm 3+ ( 3 F 4 )→Tm 3+ ( 3 H 6 )+Tm 3+ ( 3 H 4 ). The upconverted emission is about three times more intense in the glass ceramic samples than in the precursor glasses. This emission can be used to enhance the performances in crystalline silicon (c-Si) solar cells. |
| Databáze: | OpenAIRE |
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