Open AccessFLUORESCENCE OF NANOSTRUCTURED Al2O3 BULKS IN VISIBLE LIGHT RANGE
Author(s) -
Mo Ji-Mei,
Lide Zhang,
Tienan Zhao,
Xiaohui Yao
Publication year - 1994
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.43.1000
Subject(s) - fluorescence , materials science , impurity , doping , boehmite , ion , visible spectrum , analytical chemistry (journal) , optics , optoelectronics , physics , chemistry , aluminium , composite material , chromatography , quantum mechanics
Fluorescence spectra of nanostructured 23 bulks, which were not doped by Cr, were investigated systematically. The results show that for nanostructured samples of boehmite, η23 and γ23, two broad fluorescence bands (1 and 2) appear, and 1 and 2 bands are located in the wavenumber ranges of 20000 to 14500cm and 14500 to l1500cm, respectively. The 1 band can be attributed to the trace impurity (Cr3+ ions) fluorescence. This is consistent with the previous results for Cr doped 23. The 2 band is a new fluorescence band. Finally, the stress is put on the discussion of conditions and the mechanism of the appearance of the 2 band.