Photoluminescent Nanocrystals in a Multicomponent Aluminoborosilicate Glass
authors Ruivo, A; Ferro, M; Andrade, SM; Rocha, J; Pina, F; Laia, CAT
nationality International
journal JOURNAL OF PHYSICAL CHEMISTRY C
keywords PEROVSKITE SOLAR-CELLS; LEAD HALIDE CRYSTALS; BORATE GLASSES; LUMINESCENT GLASSES; SILICATE-GLASSES; AG NANOCLUSTERS; PBBR2 CRYSTALS; PBCL2; NANOPARTICLES; TEMPERATURE
abstract In this study, stable and nonexpensive aluminoborosilicate glasses with different photoluminescence colors were synthesized by doping with Pb(II), Ba(II) and sodium halides. While glasses with NaF and NaCl exhibit no (or very low) luminescence, glasses doped with NaBr and NaI display room-temperature photoluminescence at 435 and 530 nm, respectively. The observed room-temperature photoluminescence is attributed to nanocrystals whose presence is revealed by transmission electron microscopy. The crystalline nature of the particles, which are pointed out as barium-lead halides, is also revealed by anisotropy measurements for Br and I doped samples. Time-resolved luminescence measurements show a second-order kinetics component combined with a first-order nonradiative rate constant. The photoluminescence properties here described are important for the future design of new optical materials or devices based on lead halide nanocrystals.
publisher AMER CHEMICAL SOC
issn 1932-7447
year published 2016
volume 120
issue 43
beginning page 24925
ending page 24931
digital object identifier (doi) 10.1021/acs.jpcc.6b04552
web of science category Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000387198400047
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