Autor(es): Polícia, Rita ; Peřinka, Nikola ; Mendes‐Felipe, Cristian ; Martins, Pedro ; Correia, Daniela M. ; Lanceros-Méndez, S.
Data: 2024
Identificador Persistente: https://hdl.handle.net/1822/93986
Origem: RepositóriUM - Universidade do Minho
Assunto(s): composites; electroluminescence; electroluminescent devices; plant-based UV resin
In today’s rapidly evolving technological landscape, electroluminescentdevices have emerged as pivotal components, illuminating a path towardenergy-efficient lighting solutions, advanced displays, and integrated sensingtechnologies, profoundly impacting sectors ranging from consumerelectronics to sustainable urban development. Based in suchsocio-scientific-economic scenario, and in the pursuit of sustainable andenvironmentally conscious technologies, this work presents a novel approachto the development of a multifunctional electroluminescent (EL) devicecapable of both efficient lighting and electric field frequency sensingapplications. The proposed device integrates a composite based on zincsulfide co-doped with copper (ZnS:Cu) phosphor particles and plant-based UVresin, to achieve enhanced functional properties and reduced environmentalimpact. The developed anycubic plant-based UV resin clear (ECOr)/ZnS:Cuinks display viscosity values between 0.5 and 100 Pa.s (ensuring good qualityof screen-prints), and after printing composites exhibit thermal stability up to≈200 °C; morphological homogeneity, dielectric properties dependent on theZnS:Cu content (dielectric constant of 12.8 for the sample with 80 wt.% offiller); 30 cd.m2 luminance for the sample with 80 wt.% of ZnS:Cu; andcolorimetric electric field frequency sensing capability in the 0–3 kHz range.Thus, this research contributes to the advancement of sustainabletechnologies that prioritize both multifunctionality and environmentalresponsibility in the fabrication of electroluminescent devices for lighting andsensing.
