TY - JOUR
T1 - Radioluminescence of silver halide optical fibers
AU - Kirsh, Yoram
AU - Schnitzer, I.
AU - Townsend, P.
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1989/2
Y1 - 1989/2
N2 - The radioluminescence of mixed Ag halide optical fibers (AgClxBr1-x, where 0 < x < 1) is investigated in the range 20-200°C. The main feature in the emission spectrum of the Cl-rich fibers is a broad band centered at 520 nm, which behaves as exp(E/kT), with E ≈0.06 eV. It indicates a competition between nonradiative processes and radiative recombinations of electrons with self-trapped holes. In the Br-rich samples the emission is mainly in the 600-700-nm range and is ascribed to holes trapped at Ag vacancies near divalent and trivalent cationic impurities. An intense new band in the infrared appears in some of the Cl-rich fibers and in all the Br-rich fibers following annealing at 250°C. It is ascribed to the migration of cationic impurities, or of the Ag vacancies that charge compensate them, and to the formation of new complex point defects.
AB - The radioluminescence of mixed Ag halide optical fibers (AgClxBr1-x, where 0 < x < 1) is investigated in the range 20-200°C. The main feature in the emission spectrum of the Cl-rich fibers is a broad band centered at 520 nm, which behaves as exp(E/kT), with E ≈0.06 eV. It indicates a competition between nonradiative processes and radiative recombinations of electrons with self-trapped holes. In the Br-rich samples the emission is mainly in the 600-700-nm range and is ascribed to holes trapped at Ag vacancies near divalent and trivalent cationic impurities. An intense new band in the infrared appears in some of the Cl-rich fibers and in all the Br-rich fibers following annealing at 250°C. It is ascribed to the migration of cationic impurities, or of the Ag vacancies that charge compensate them, and to the formation of new complex point defects.
UR - http://www.scopus.com/inward/record.url?scp=84975586406&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.6.000146
DO - 10.1364/JOSAB.6.000146
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AN - SCOPUS:84975586406
SN - 0740-3224
VL - 6
SP - 146
EP - 150
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 2
ER -