Linked Life Data

18069822

Source:http://linkedlifedata.com/resource/pubmed/id/18069822

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-12-31
pubmed:abstractText
Many efforts have been devoted to exploring novel luminescent materials that do not contain expensive or toxic elements, or do not need mercury vapor plasma as the excitation source. In this paper, amorphous Al2O3 powder samples were prepared via the Pechini-type sol-gel process. The resulting samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), photoluminescence (PL) excitation and emission spectra, kinetic decay, and electron paramagnetic resonance (EPR). The obtained amorphous Al2O3 powder samples annealed at 500 and 600 degrees C exhibit bright bluish-white emission centered at 430 and 407 nm, respectively. The luminescent mechanisms of the amorphous Al2O3 powder samples can be ascribed to the carbon-related impurities such as radical carbonyl species. The calculated band structure of the defective amorphous Al2O3 agrees well with the results of spectral analysis and the proposed luminescent mechanism.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jan
pubmed:issn
0020-1669
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
47
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
49-55
pubmed:year
2008
pubmed:articleTitle
Bluish-white emission from radical carbonyl impurities in amorphous Al(2)O(3) prepared via the Pechini-type sol-gel process.
pubmed:affiliation
State Key Laboratory of Application of Rare Earth Resources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, PR China.
pubmed:publicationType
Journal Article