Down conversion photoluminescence on PVP/Ag-nanoparticles electrospun composite fibers

Ana C. Baptista, Alexandre M. Botas, Ana P.C. Almeida, Ana T. Nicolau, Bruno P. Falcão, Manuel J. Soares, Joaquim P. Leitão, Rodrigo Martins, João P. Borges, Isabel Ferreira

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)278-281
Number of pages4
JournalOptical Materials
Volume39
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Ag nanoparticles
  • Electrospinning
  • Fibers
  • Photoluminescence
  • Polyvinylpyrrolidone

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