Influence of annealing on stimulated emission in ZnO nanorods

Wai Ming Kwok; Aleksandra B. Djurišić; Yu Hang Leung; D. Li; K. H. Tam; D. L. Phillips; W. K. Chan

doi:10.1063/1.2378560

Influence of annealing on stimulated emission in ZnO nanorods

Wai Ming Kwok, Aleksandra B. Djurišić, Yu Hang Leung, D. Li, K. H. Tam, D. L. Phillips, W. K. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

91 Citations (Scopus)

Abstract

Vertically aligned ZnO nanorod arrays with rod lengths in the range of 200-1500 nm were fabricated by a hydrothermal method. No stimulated emission was observed in as grown nanorods. Annealing of the rods in forming gas and oxygen significantly affected their optical properties and enabled the achievement of stimulated emission. The lowest lasing threshold and defect emission as well as the longest spontaneous emission decay times were obtained for nanorods annealed in oxygen flow. This indicates that interstitial oxygen, which is commonly assumed to be the cause of yellow-green defect emission, is not the dominant defect in hydrothermally grown nanorods.

Original language	English
Article number	183112
Journal	Applied Physics Letters
Volume	89
Issue number	18
DOIs	https://doi.org/10.1063/1.2378560
Publication status	Published - 13 Nov 2006
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2378560

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title = "Influence of annealing on stimulated emission in ZnO nanorods",

abstract = "Vertically aligned ZnO nanorod arrays with rod lengths in the range of 200-1500 nm were fabricated by a hydrothermal method. No stimulated emission was observed in as grown nanorods. Annealing of the rods in forming gas and oxygen significantly affected their optical properties and enabled the achievement of stimulated emission. The lowest lasing threshold and defect emission as well as the longest spontaneous emission decay times were obtained for nanorods annealed in oxygen flow. This indicates that interstitial oxygen, which is commonly assumed to be the cause of yellow-green defect emission, is not the dominant defect in hydrothermally grown nanorods.",

author = "Kwok, {Wai Ming} and Djuri{\v s}i{\'c}, {Aleksandra B.} and Leung, {Yu Hang} and D. Li and Tam, {K. H.} and Phillips, {D. L.} and Chan, {W. K.}",

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AU - Kwok, Wai Ming

AU - Djurišić, Aleksandra B.

AU - Leung, Yu Hang

AU - Li, D.

AU - Tam, K. H.

AU - Phillips, D. L.

AU - Chan, W. K.

PY - 2006/11/13

Y1 - 2006/11/13

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AB - Vertically aligned ZnO nanorod arrays with rod lengths in the range of 200-1500 nm were fabricated by a hydrothermal method. No stimulated emission was observed in as grown nanorods. Annealing of the rods in forming gas and oxygen significantly affected their optical properties and enabled the achievement of stimulated emission. The lowest lasing threshold and defect emission as well as the longest spontaneous emission decay times were obtained for nanorods annealed in oxygen flow. This indicates that interstitial oxygen, which is commonly assumed to be the cause of yellow-green defect emission, is not the dominant defect in hydrothermally grown nanorods.

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JF - Applied Physics Letters

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ER -

Influence of annealing on stimulated emission in ZnO nanorods

Abstract

ASJC Scopus subject areas

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