Thermal imaging by utilization of CsPbBr3 quantum dot photoluminescence
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909733867225088 |
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| author | Jalouli, Alireza Giannini-Hutchin, Nathan Albrecht, Alexander R. |
| author_facet | Jalouli, Alireza Giannini-Hutchin, Nathan Albrecht, Alexander R. |
| contents | The temperature-dependent photoluminescence of perovskite quantum dots (CsPbBr3) in the visible band, is analyzed to evaluate their suitability for use in thermometry. A differential measurement of the photoluminescence can be used to estimate the surface temperature. Thermal imaging is demonstrated by using the Bayer-pattern of a cost-effective consumer-grade digital camera to determine the spectral shift. The temperature change of traces on a printed circuit board are visualized as proof of principle. This technique promises a novel approach for thermal imaging of arbitrary samples with optical resolution (wavelength of ~ 500 nm), instead of typical black-body wavelengths (~ 10 micrometer). Premature degradation of the quantum dots has been mitigated by embedding them in a poly-methyl methacrylate (PMMA) film, which can then be applied to arbitrary surfaces. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08631 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Thermal imaging by utilization of CsPbBr3 quantum dot photoluminescence Jalouli, Alireza Giannini-Hutchin, Nathan Albrecht, Alexander R. Optics The temperature-dependent photoluminescence of perovskite quantum dots (CsPbBr3) in the visible band, is analyzed to evaluate their suitability for use in thermometry. A differential measurement of the photoluminescence can be used to estimate the surface temperature. Thermal imaging is demonstrated by using the Bayer-pattern of a cost-effective consumer-grade digital camera to determine the spectral shift. The temperature change of traces on a printed circuit board are visualized as proof of principle. This technique promises a novel approach for thermal imaging of arbitrary samples with optical resolution (wavelength of ~ 500 nm), instead of typical black-body wavelengths (~ 10 micrometer). Premature degradation of the quantum dots has been mitigated by embedding them in a poly-methyl methacrylate (PMMA) film, which can then be applied to arbitrary surfaces. |
| title | Thermal imaging by utilization of CsPbBr3 quantum dot photoluminescence |
| topic | Optics |
| url | https://arxiv.org/abs/2508.08631 |