Development of multidye UV filters for OPVs using luminescent materials

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  • Jeffrey Kettle
  • Ricardo Vignoto Fernandes
    Universidade Estadual de Londrina
  • Noel Bristow
  • Vasil Stoichkov
  • Helder Scapin Anizelli
    Universidade Estadual de Londrina
  • Jose Leonil Duarte
    Universidade Estadual de Londrina
  • Edson Laureto
    Universidade Estadual de Londrina
Luminescence down-shifting (LDS) is used in several photovoltaic technologies aiming to improve the photon conversion efficiency (PCE) of the devices through the increase of the light harvesting in the regions of the electromagnetic spectrum where the EQE of the solar cells is poor. The aim of this work was to produce films of mixtures (blends) of two luminescent materials, dispersed in a poly-methyl methacrylate (PMMA) matrix, hoping to improve their properties both as LDS layer and as UV filter when applied on the clear, external surface of P3HT:PC61BM photovoltaic devices. The best results led to an increment of 7.4% in the PCE of the devices, and a six fold enhancement in their half-life (T 50%). This study indicates that multidye LDS layers with optimized optical properties can lead to an effective improvement in the performance and operational stability of OPVs.
Original languageEnglish
Article number025103
JournalJournal of Physics D: Applied Physics
Issue number2
Early online date30 Nov 2016
Publication statusPublished - 18 Jan 2017

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