Kumar Abhishek, Crista Diana M A, Núñez-Montenegro Ara, Esteves da Silva Joaquim C G, Verma Santosh Kumar
Chemistry Research Unit (CIQUP), Institute of Molecular Sciences (IMS), Departamento de Geociências, Ambiente e Ordenamento do Território, Faculdade de Ciências, Universidade do Porto Rua do Campo Alegre s/n Porto 4169-007 Portugal
Department of Physics & Electronics, Kamla Nehru Institute of Physical and Social Sciences (KNIPSS) Sultanpur Uttar Pradesh 228118 India.
RSC Adv. 2023 Oct 2;13(41):28676-28685. doi: 10.1039/d3ra03872f. eCollection 2023 Sep 26.
In the present work, Eu/Dy ions doped/co-doped into persistent SrAlO microparticles have been developed through solid-state synthesis followed by homogenization and particle size reduction in a ball milling device. These particles have shown a broad and long-persistent afterglow around the 528 nm wavelength of electromagnetic radiation through a broad excitation at around 400 nm. The luminescence intensity was optimized through the selection of different annealing temperatures in the range of 1100 °C to 1500 °C, with intervals of 100 °C. Several structural and optical characterization techniques, such as XRD, SEM, FTIR, thermogravimetric analysis, and photoluminescence, were utilized to judge the preparation and ability of these particles in possible applications in latent fingermark detection on various difficult surfaces. The persistency and stability of these particles were calculated using a digital lux meter.
在本工作中，通过固态合成，随后在球磨装置中进行均质化和粒度减小，制备出了掺杂/共掺杂Eu/Dy离子的持久发光SrAlO微粒。这些微粒在约400nm的宽激发下，在约528nm波长的电磁辐射周围呈现出宽且持久的余辉。通过选择1100℃至1500℃范围内、间隔为100℃的不同退火温度，优化了发光强度。利用多种结构和光学表征技术，如XRD、SEM、FTIR、热重分析和光致发光，来判断这些微粒在各种困难表面上潜在指纹检测的制备情况和应用能力。使用数字照度计计算了这些微粒的持久性和稳定性。
