In this study, we report on the synthesis of new organic fluorophores containing either the benzo[1,2-d:4,5-d′]bisthiazole or the dithieno[3,2-b:2′,3′-d]silole heterocyclic unit, and on their application for the fabrication of luminescent solar concentrators (LSCs) made of poly(methyl methacrylate) (PMMA) thin films. In solution, the new compounds absorbed light in the visible region and displayed a brilliant green emission in the 500–600 nm range with moderate-to-good fluorescence quantum yields (0.25–0.68). Dispersions of selected fluorophores in PMMA thin films mostly maintained the light absorption features observed in solution, although in the case of benzobisthiazole-based fluorophore 1a an evident fluorescence red-shift was observed when increasing the compound concentration in the film. In agreement with its promising optical properties, LSCs prepared with the latter compound yielded interesting optical efficiencies up to 6.42 %, not far from those of state-of-the-art PMMA LSC devices.

Green/Yellow-Emitting Conjugated Heterocyclic Fluorophores for Luminescent Solar Concentrators

Pucci, Andrea;
2018-01-01

Abstract

In this study, we report on the synthesis of new organic fluorophores containing either the benzo[1,2-d:4,5-d′]bisthiazole or the dithieno[3,2-b:2′,3′-d]silole heterocyclic unit, and on their application for the fabrication of luminescent solar concentrators (LSCs) made of poly(methyl methacrylate) (PMMA) thin films. In solution, the new compounds absorbed light in the visible region and displayed a brilliant green emission in the 500–600 nm range with moderate-to-good fluorescence quantum yields (0.25–0.68). Dispersions of selected fluorophores in PMMA thin films mostly maintained the light absorption features observed in solution, although in the case of benzobisthiazole-based fluorophore 1a an evident fluorescence red-shift was observed when increasing the compound concentration in the film. In agreement with its promising optical properties, LSCs prepared with the latter compound yielded interesting optical efficiencies up to 6.42 %, not far from those of state-of-the-art PMMA LSC devices.
2018
Papucci, Costanza; Geervliet, Tristan A.; Franchi, Daniele; Bettucci, Ottavia; Mordini, Alessandro; Reginato, Gianna; Picchioni, Francesco; Pucci, Andrea; Calamante, Massimo; Zani, Lorenzo
File in questo prodotto:
File Dimensione Formato  
Revised_manuscript_organic fluorophores_Calamante_Zani.docx

accesso aperto

Tipologia: Documento in Post-print
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 5.63 MB
Formato Microsoft Word XML
5.63 MB Microsoft Word XML Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/925282
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 27
social impact