Mechanoluminescence in (Sr,Ca,Ba) 2 SnO 4 :Sm 3+ ,La 3+ ceramics
| Autor: | Haifeng Zhao, Yanxia Li, Xiaona Chai, Xusheng Wang, Xi Yao |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Mechanical Engineering Metals and Alloys Analytical chemistry Lattice distortion Phosphor 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Thermoluminescence Ion Crystal Mechanics of Materials visual_art 0103 physical sciences Materials Chemistry visual_art.visual_art_medium Ceramic 0210 nano-technology Mechanoluminescence |
| Zdroj: | Journal of Alloys and Compounds. 656:94-97 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2015.09.218 |
| Popis: | (Sr,Ca,Ba) 2 SnO 4 :Sm 3+ ,La 3+ phosphors were prepared by traditional solid-state reactions. Based on previous Sr 2 SnO 4 :Sm 3+ phosphor, mechanoluminescence (ML) property was greatly enhanced by substitution of Ca 2+ , Ba 2+ and codoped of La 3+ . Among the samples, (Sr 0.7 Ca 0.27 Ba 0.03 ) 1.92 La 0.06 Sm 0.02 SnO 4 showed excellent properties with intense ML and good linearity between the intensity and the load. ML spectrum of (Sr 0.7 Ca 0.27 Ba 0.03 ) 1.92 La 0.06 Sm 0.02 SnO 4 is consistent with the PL spectrum, ascribed to the 4 G 5/2 to 6 H J (J = 5/2, 7/2, 9/2, and 11/2) transitions of Sm 3+ ions. Introducing Ca 2+ , Ba 2+ and La 3+ causes more lattice distortion or defects in the crystal grains, indicating traps can be controlled in both trap depth and quantity. Due to the improvement of traps in the system, ML performance is enhanced. |
| Databáze: | OpenAIRE |
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