Lemański Karol, Bezkrovna Olha, Rebrova Nadiia, Lisiecki Radosław, Zdeb Patrycja, Dereń Przemysław Jacek
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wrocław, Poland.
Institute for Single Crystals, NAS of Ukraine, Nauky Ave. 60, 61001 Kharkiv, Ukraine.
Molecules. 2024 May 1;29(9):2084. doi: 10.3390/molecules29092084.
The recent COVID-19 pandemic has made everyone aware of the threat of viruses and the growing number of antibiotic-resistant bacteria. It has become necessary to find new methods to combat these hazards. One tool that could be used is UVC radiation, i.e., 100-280 nm. Currently, the available sources of this light are mercury vapor lamps. However, the modern world requires more compact, mercury-free, and less energy-consuming light sources. This work presents the results of our research on a new material in which efficient UVC radiation was obtained. Here, we present the results of research on CaY(PO) polycrystals doped with Pr ions prepared using the solid-state method. The absorption, excitation, emission, and emission decay profiles of praseodymium(III) ions were measured and analyzed. The upconversion emission in the UVC region excited by blue light was observed. Parameters such as energy bandgap, refractive index, and thermal stability of luminescence were determined. The studied phosphate-based phosphor possesses promising characteristics that show its potential in luminescent applications in future use in medicine or for surface disinfection.
最近的新冠疫情让每个人都意识到了病毒的威胁以及抗生素耐药细菌数量的不断增加。因此，有必要寻找对抗这些危害的新方法。一种可以使用的工具是UVC辐射，即波长为100 - 280纳米的紫外线。目前，这种光的可用光源是汞蒸气灯。然而，现代社会需要更紧凑、无汞且能耗更低的光源。这项工作展示了我们对一种能产生高效UVC辐射的新材料的研究成果。在此，我们展示了采用固态法制备的掺杂Pr离子的CaY(PO)多晶体的研究结果。测量并分析了镨（III）离子的吸收、激发、发射和发射衰减谱。观察到了蓝光激发下UVC区域的上转换发射。确定了诸如能带隙、折射率和发光热稳定性等参数。所研究的磷酸盐基荧光粉具有有前景的特性，显示出其在未来医学发光应用或表面消毒中的潜力。
