Down conversion photoluminescence on PVP/Ag-nanoparticles electrospun composite fibers
- Citation:
- Baptista, Ana Catarina, Alexandre Botas, Ana Almeida, Ana Nicolau, Bruno Falcão, Manuel Soares, Joaquim Pratas Leitão, Rodrigo Martins, João Paulo Borges, and Isabel Ferreira. "Down conversion photoluminescence on PVP/Ag-nanoparticles electrospun composite fibers." Optical Materials 39 (2015): 278-281.
Abstract:
The influence of Ag nanoparticles (Ag NPs) on the luminescence of electrospun nonwoven mats made of polyvinylpyrrolidone (PVP) has been studied in this work. The PVP fibers incorporating 2.1–4.3 nm size Ag NPs show a significant photoluminescence (PL) band between 580 and 640 nm under 325 nm laser excitation. The down conversion luminescence emission is present even after several hours of laser excitation, which denotes the durability and stability of fibers to consecutive excitations. As so these one-dimensional photonic fibers made using cheap methods is of great importance for organic optoelectronic applications, fluorescent clothing or counterfeiting labels.