Open AccessGiant visible and infrared light attenuation effect in nanostructured narrow-bandgap glasses
Author(s) -
R. Golovchak,
Yaroslav Shpotyuk,
J. Szlęzak,
Andrzej Dziedzic,
Adam Ingram,
J. Cebulski
Publication year - 2018
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.43.000387
Subject(s) - optics , materials science , infrared , visible spectrum , attenuation coefficient , attenuation , band gap , optoelectronics , white light , physics
A unique effect of Bi on the optical and electrical properties of mixed Ga-containing Ge-Se and Ge-Te glasses is discovered. It is shown that glass with a low Bi content is completely transparent in a 3-16 μm spectral range, while the glass with a slightly higher Bi content possesses a large (>10 db/mm) attenuation coefficient, making a ∼millimeter thick glass sample fully opaque to VIS-IR radiation. Despite this contrast, both types of glass are found to retain their semiconducting properties, the DC conductivity at room temperature, σ DC ∼10 -3 S/m, being comparable to that of silicon.