Spectral regulation in Cs2PtCl6 double perovskite via low-temperature and high-pressure engineering for advanced optical thermometry and manometry
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2025
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| author | Zhiyu, Pei Runowski, Marcin Xuanyu, Ge Woźny, Przemysław luo, laihui Peng, Du |
| author_facet | Zhiyu, Pei Runowski, Marcin Xuanyu, Ge Woźny, Przemysław luo, laihui Peng, Du |
| contents | <p><span lang="DE">To build bifunctional luminescent platform for optical thermometry and manometry, Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite was synthesized. Upon 468 nm excitation, the designed compound emitted bright red light centered at ≈675 nm, originating from self-trapped exciton (STE) emission, whose fluorescence intensity and band width are highly temperature-dependent. Moreover, the temperature-dependent decay curves of the developed Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite were measured to explore its application in optical thermometry, of which its maximum relative sensor sensitivity is 1.34% K<sup>-1</sup>, with the operation range of 100-310 K. Furthermore, the impact of pressure on the phase structure and luminescence behaviors of the Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite was also discussed. The pressure-dependent Raman spectra clarified that the synthesized compound possesses stable phase structure at high-pressure. Furthermore, Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite exhibits distinct spectral blue-shift at high-pressure. Importantly, as pressure increases (<em>i.e</em>., 0-5.67 GPa), the STE emission band centroid and full width at half maximum (FWHM) are both linearly dependent on pressure, resulting in high pressure sensitivities of d</span><em><span lang="DE">λ</span></em><span lang="DE">/d<em>p</em> = 7.19 nm/GPa and d<em>FWHM</em>/d<em>p</em> = 4.95 nm/GPa. Our finding manifests that the luminescence characteristics of the Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite can be efficiently regulated <em>via</em> low-temperature and high-pressure, enabling its applications in optical thermometry and manometry.</span></p> |
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| publishDate | 2025 |
| publisher | Zenodo |
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| spellingShingle | Spectral regulation in Cs2PtCl6 double perovskite via low-temperature and high-pressure engineering for advanced optical thermometry and manometry Zhiyu, Pei Runowski, Marcin Xuanyu, Ge Woźny, Przemysław luo, laihui Peng, Du <p><span lang="DE">To build bifunctional luminescent platform for optical thermometry and manometry, Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite was synthesized. Upon 468 nm excitation, the designed compound emitted bright red light centered at ≈675 nm, originating from self-trapped exciton (STE) emission, whose fluorescence intensity and band width are highly temperature-dependent. Moreover, the temperature-dependent decay curves of the developed Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite were measured to explore its application in optical thermometry, of which its maximum relative sensor sensitivity is 1.34% K<sup>-1</sup>, with the operation range of 100-310 K. Furthermore, the impact of pressure on the phase structure and luminescence behaviors of the Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite was also discussed. The pressure-dependent Raman spectra clarified that the synthesized compound possesses stable phase structure at high-pressure. Furthermore, Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite exhibits distinct spectral blue-shift at high-pressure. Importantly, as pressure increases (<em>i.e</em>., 0-5.67 GPa), the STE emission band centroid and full width at half maximum (FWHM) are both linearly dependent on pressure, resulting in high pressure sensitivities of d</span><em><span lang="DE">λ</span></em><span lang="DE">/d<em>p</em> = 7.19 nm/GPa and d<em>FWHM</em>/d<em>p</em> = 4.95 nm/GPa. Our finding manifests that the luminescence characteristics of the Cs<sub>2</sub>PtCl<sub>6</sub> double perovskite can be efficiently regulated <em>via</em> low-temperature and high-pressure, enabling its applications in optical thermometry and manometry.</span></p> |
| title | Spectral regulation in Cs2PtCl6 double perovskite via low-temperature and high-pressure engineering for advanced optical thermometry and manometry |
| url | https://doi.org/10.5281/zenodo.18836392 |