TY - JOUR
T1 - Ultraviolet-visible light-induced solarisation in silica-based optical fibres for indoor solar applications
AU - Lo Piccolo, Giuseppe Mattia
AU - Morana, Adriana
AU - Alessi, Antonino
AU - Boukenter, Aziz
AU - Girard, Sylvain
AU - Ouerdane, Youcef
AU - Gelardi, Franco Mario
AU - Agnello, Simonpietro
AU - Cannas, Marco
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1/15
Y1 - 2021/1/15
N2 - The transmission performances of pure- and doped-silica (a-SiO2) optical fibres are compared during the exposure to a high-power broadband light source approximating the solar spectrum. From the Gaussian decomposition of the attenuation spectra, we found that Al- and P-doped fibres show a fast solarisation effect which leads to transmission degradation in the ultraviolet-visible range. Similarly, Ge-doped fibres undergo photoinduced colour-centre formation which, however, does not prevent visible-light propagation. One of the two tested pure-silica fibres results completely unaffected by light exposure whereas the other shows an absorption band probably due to the presence of chlorine impurities in the silica matrix.The reported results demonstrate the possibility of using commercial Ge-doped and pure-silica fibres for indoor lighting applications and fibre-based photovoltaic devices.
AB - The transmission performances of pure- and doped-silica (a-SiO2) optical fibres are compared during the exposure to a high-power broadband light source approximating the solar spectrum. From the Gaussian decomposition of the attenuation spectra, we found that Al- and P-doped fibres show a fast solarisation effect which leads to transmission degradation in the ultraviolet-visible range. Similarly, Ge-doped fibres undergo photoinduced colour-centre formation which, however, does not prevent visible-light propagation. One of the two tested pure-silica fibres results completely unaffected by light exposure whereas the other shows an absorption band probably due to the presence of chlorine impurities in the silica matrix.The reported results demonstrate the possibility of using commercial Ge-doped and pure-silica fibres for indoor lighting applications and fibre-based photovoltaic devices.
KW - Optical fibre-based daylighting systems
KW - Silica optical fibres
KW - Solarisation
KW - UV-defects
U2 - 10.1016/j.jnoncrysol.2020.120458
DO - 10.1016/j.jnoncrysol.2020.120458
M3 - Article
AN - SCOPUS:85092110255
SN - 0022-3093
VL - 552
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
M1 - 120458
ER -
