Effect of Pressure-Assisted Heat Treatment on Photoluminescence Emission of α-Bi2O3 Needles
View/ Open
Impact
Scholar |
Other documents of the author: Schmidt, Samara; Kubaski, Evaldo T.; Volanti, Diogo P.; Sequinel, Thiago; Bezzon, Vinicius Danilo N.; Beltran, Armando; Tebcherani, Sergio M.; Varela, José A.
Metadata
Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
comunitat-uji-handle4:
INVESTIGACIONMetadata
Title
Effect of Pressure-Assisted Heat Treatment on Photoluminescence Emission of α-Bi2O3 NeedlesAuthor (s)
Date
2015-10xmlui.dri2xhtml.METS-1.0.item-edition
PostprintPublisher
American Chemical SocietyBibliographic citation
SCHMIDT, Samara, et al. Effect of pressure-assisted heat treatment on photoluminescence emission of α-Bi2O3 needles. Inorganic chemistry, 2015, vol. 54, no 21, p. 10184-10191.Type
info:eu-repo/semantics/articlePublisher version
http://pubs.acs.org/doi/10.1021/acs.inorgchem.5b01237Version
info:eu-repo/semantics/publishedVersionAbstract
Materials with high photoluminescence (PL)
intensity can potentially be used in optical and electronic
devices. Although the PL properties of bismuth(III) oxide with a
monoclinic crystal structure (α-Bi2O3) have ... [+]
Materials with high photoluminescence (PL)
intensity can potentially be used in optical and electronic
devices. Although the PL properties of bismuth(III) oxide with a
monoclinic crystal structure (α-Bi2O3) have been explored in
the past few years, methods of increasing PL emission intensity
and information relating PL emission to structural defects are
scarce. This research evaluated the effect of a pressure-assisted
heat treatment (PAHT) on the PL properties of α-Bi2O3 with a
needlelike morphology, which was synthesized via a microwaveassisted
hydrothermal (MAH) method. PAHT caused an
angular increase between the [BiO6]−[BiO6] clusters of α-
Bi2O3, resulting in a significant increase in the PL emission
intensity. The Raman and XPS spectra also showed that the α-
Bi2O3 PL emissions in the low-energy region (below ∼2.1 eV) are attributed to oxygen vacancies that form defect donor states.
The experimental results are in good agreement with first-principles total-energy calculations that were carried out within
periodic density functional theory (DFT). [-]
Is part of
Inorganic chemistry, 2015, vol. 54, no 21Rights
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
This item appears in the folowing collection(s)
- QFA_Articles [829]