Bi2O3/TiO2 coaxial nanorods: Synthesis, characterization and photoluminescence properties

C. Hong; H. W. Kim; W. I. Lee; C. Lee

doi:10.1016/j.tsf.2010.03.157

Bi₂O₃/TiO₂ coaxial nanorods: Synthesis, characterization and photoluminescence properties

C. Hong, H. W. Kim, W. I. Lee, C. Lee

Inha University

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Bi₂O₃-core/TiO₂-shell nanorods were prepared by the thermal evaporation of Bi₂O₃ and the metal organic chemical vapor deposition of TiO₂. The Bi₂O ₃-core is a pure simple monoclinic α-Bi₂O ₃ phase single crystal, whereas the TiO₂ shell has a simple tetragonal structure. The PL emission intensity of the Bi ₂O₃ nanorods was enhanced by the TiO₂ coating. The optimal TiO₂ coating layer thickness for the highest emission intensity was 60 nm. On the other hand, the PL properties of the Bi ₂O₃-core/TiO₂-shell coaxial nanorods were degraded by post-annealing. The origin of the PL enhancement by the TiO ₂ coating is discussed.

Original language	English
Pages (from-to)	6638-6641
Number of pages	4
Journal	Thin Solid Films
Volume	518
Issue number	22
DOIs	https://doi.org/10.1016/j.tsf.2010.03.157
State	Published - 1 Sep 2010

Keywords

BiO-core/TiO-shell
Metal organic chemical vapor deposition (MOCVD)
Nanorods
Photoluminescence (PL)
Thermal evaporation

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10.1016/j.tsf.2010.03.157

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title = "Bi2O3/TiO2 coaxial nanorods: Synthesis, characterization and photoluminescence properties",

abstract = "Bi2O3-core/TiO2-shell nanorods were prepared by the thermal evaporation of Bi2O3 and the metal organic chemical vapor deposition of TiO2. The Bi2O 3-core is a pure simple monoclinic α-Bi2O 3 phase single crystal, whereas the TiO2 shell has a simple tetragonal structure. The PL emission intensity of the Bi 2O3 nanorods was enhanced by the TiO2 coating. The optimal TiO2 coating layer thickness for the highest emission intensity was 60 nm. On the other hand, the PL properties of the Bi 2O3-core/TiO2-shell coaxial nanorods were degraded by post-annealing. The origin of the PL enhancement by the TiO 2 coating is discussed.",

keywords = "BiO-core/TiO-shell, Metal organic chemical vapor deposition (MOCVD), Nanorods, Photoluminescence (PL), Thermal evaporation",

author = "C. Hong and Kim, {H. W.} and Lee, {W. I.} and C. Lee",

year = "2010",

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TY - JOUR

T1 - Bi2O3/TiO2 coaxial nanorods

T2 - Synthesis, characterization and photoluminescence properties

AU - Hong, C.

AU - Kim, H. W.

AU - Lee, W. I.

AU - Lee, C.

PY - 2010/9/1

Y1 - 2010/9/1

N2 - Bi2O3-core/TiO2-shell nanorods were prepared by the thermal evaporation of Bi2O3 and the metal organic chemical vapor deposition of TiO2. The Bi2O 3-core is a pure simple monoclinic α-Bi2O 3 phase single crystal, whereas the TiO2 shell has a simple tetragonal structure. The PL emission intensity of the Bi 2O3 nanorods was enhanced by the TiO2 coating. The optimal TiO2 coating layer thickness for the highest emission intensity was 60 nm. On the other hand, the PL properties of the Bi 2O3-core/TiO2-shell coaxial nanorods were degraded by post-annealing. The origin of the PL enhancement by the TiO 2 coating is discussed.

AB - Bi2O3-core/TiO2-shell nanorods were prepared by the thermal evaporation of Bi2O3 and the metal organic chemical vapor deposition of TiO2. The Bi2O 3-core is a pure simple monoclinic α-Bi2O 3 phase single crystal, whereas the TiO2 shell has a simple tetragonal structure. The PL emission intensity of the Bi 2O3 nanorods was enhanced by the TiO2 coating. The optimal TiO2 coating layer thickness for the highest emission intensity was 60 nm. On the other hand, the PL properties of the Bi 2O3-core/TiO2-shell coaxial nanorods were degraded by post-annealing. The origin of the PL enhancement by the TiO 2 coating is discussed.

KW - BiO-core/TiO-shell

KW - Metal organic chemical vapor deposition (MOCVD)

KW - Nanorods

KW - Photoluminescence (PL)

KW - Thermal evaporation

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Bi₂O₃/TiO₂ coaxial nanorods: Synthesis, characterization and photoluminescence properties

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