Upconversion from fluorophosphate glasses prepared with NaYF4:Er3+,Yb3+nanocrystals

N. Ojha, M. Tuomisto, M. Lastusaari, L. Petit

    Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

    15 Sitaatiot (Scopus)
    33 Lataukset (Pure)

    Abstrakti

    The direct doping method was applied to fabricate upconverter fluorophosphate glasses in the system (90NaPO3-(10-x)Na2O-xNaF) (mol%) by adding NaYF4:Er3+,Yb3+ nanocrystals. An increase in the network connectivity, a red shift of the optical band gap and a decrease in the thermal properties occur when Na2O is progressively replaced by NaF. To ensure the survival and the dispersion of the nanocrystals in the glasses with x = 0 and 10, three doping temperatures (Tdoping) (525, 550 and 575 °C) at which the nanocrystals were added in the glass melt after melting and 2 dwell times (3 and 5 minutes) before quenching the glasses were tested. Using 5 wt% of the NaYF4:Er3+,Yb3+ nanocrystals, green emission from the NaYF4:Er3+,Yb3+ nanocrystals-containing glasses was observed using a 980 nm pumping, the intensity of which depends on the glass composition and on the direct doping parameters (Tdoping and dwell time). The strongest upconversion was obtained from the glass with x = 10 prepared using a Tdoping of 550 °C and a 3 min dwell time. Finally, we showed that the upconversion, the emission at 1.5 μm and of the transmittance spectra of the nanocrystals-containing glasses could be measured to verify if decomposition of the nanocrystals occurred in glass melts during the preparation of the glasses.

    AlkuperäiskieliEnglanti
    Sivut19226-19236
    Sivumäärä11
    JulkaisuRSC Advances
    Vuosikerta8
    Numero34
    DOI - pysyväislinkit
    TilaJulkaistu - 1 tammik. 2018
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

    Julkaisufoorumi-taso

    • Jufo-taso 1

    !!ASJC Scopus subject areas

    • Yleinen kemia
    • Yleinen kemian tekniikka

    Sormenjälki

    Sukella tutkimusaiheisiin 'Upconversion from fluorophosphate glasses prepared with NaYF4:Er3+,Yb3+nanocrystals'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

    Siteeraa tätä