| Autor: |
Jianyan Ding, Yanling Gao, Dewu Wu, Quansheng Wu, Jiangcong Zhou, Xueping Tang, Shanshan Ye |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Ceramics International. 47:27157-27164 |
| ISSN: |
0272-8842 |
| DOI: |
10.1016/j.ceramint.2021.06.133 |
| Popis: |
Optical thermometry and white light-emitting diodes (WLEDs) are the research hotspots for Eu3+ doped phosphors. In this study, a series of Sr2TiSi2O8: Eu3+ red phosphors were developed in a solid-state reaction method. The luminescent properties of the Sr2TiSi2O8: Eu3+ phosphor illustrate that Sr2TiSi2O8: Eu3+ is effectively excited by the NUV LED chip and emit an intense red light with a peak of 618 nm due to the noninversion symmetry coordination of Eu3+ in Sr2TiSi2O8. The local coordination environment of Eu3+ was investigated in detail using crystallographic data, spectroscopic data and Judd–Ofelt parameters. In addition, the emission intensity of Sr2TiSi2O8:Eu3+ is extremely sensitive to temperature. The relative sensitivity of Sr2TiSi2O8:Eu3+ is 1.1% k-1@300 k, which is comparable to other Eu3+-activated temperature sensing materials. The possible mechanism of the temperature sensitive quenching characteristics was proposed. The results indicate that Sr2TiSi2O8:Eu3+ is a potential temperature sensing material. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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