Exciton radiative lifetime in ZnO nanorods fabricated by vapor phase transport method

X. H. Zhang; S. J. Chua; A. M. Yong; H. Y. Yang; Shu Ping Lau; Siu Fung Yu; X. W. Sun; Lei Miao; Masaki Tanemura; Sakae Tanemura

doi:10.1063/1.2429019

Exciton radiative lifetime in ZnO nanorods fabricated by vapor phase transport method

X. H. Zhang, S. J. Chua, A. M. Yong, H. Y. Yang, Shu Ping Lau, Siu Fung Yu, X. W. Sun, Lei Miao, Masaki Tanemura, Sakae Tanemura

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

77 Citations (Scopus)

Abstract

The exciton radiative lifetime in ZnO nanorods is studied. It is found that the exciton radiative lifetime increases with temperature as T2. Furthermore, the spectral linewidth of the photoluminescence of the ZnO nanorods also increases with temperature as T2, suggesting a linear dependence of exciton radiative lifetime on the spectral linewidth. The physics behind is that the oscillator strength of excitons at k=0 is shared equally among all the states within the spectral linewidth and the coherence extension of an exciton decreases with temperature due to the scattering by phonons, defects, or impurities.

Original language	English
Article number	013107
Journal	Applied Physics Letters
Volume	90
Issue number	1
DOIs	https://doi.org/10.1063/1.2429019
Publication status	Published - 15 Jan 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2429019

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title = "Exciton radiative lifetime in ZnO nanorods fabricated by vapor phase transport method",

abstract = "The exciton radiative lifetime in ZnO nanorods is studied. It is found that the exciton radiative lifetime increases with temperature as T2. Furthermore, the spectral linewidth of the photoluminescence of the ZnO nanorods also increases with temperature as T2, suggesting a linear dependence of exciton radiative lifetime on the spectral linewidth. The physics behind is that the oscillator strength of excitons at k=0 is shared equally among all the states within the spectral linewidth and the coherence extension of an exciton decreases with temperature due to the scattering by phonons, defects, or impurities.",

author = "Zhang, {X. H.} and Chua, {S. J.} and Yong, {A. M.} and Yang, {H. Y.} and Lau, {Shu Ping} and Yu, {Siu Fung} and Sun, {X. W.} and Lei Miao and Masaki Tanemura and Sakae Tanemura",

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T1 - Exciton radiative lifetime in ZnO nanorods fabricated by vapor phase transport method

AU - Zhang, X. H.

AU - Chua, S. J.

AU - Yong, A. M.

AU - Yang, H. Y.

AU - Lau, Shu Ping

AU - Yu, Siu Fung

AU - Sun, X. W.

AU - Miao, Lei

AU - Tanemura, Masaki

AU - Tanemura, Sakae

PY - 2007/1/15

Y1 - 2007/1/15

N2 - The exciton radiative lifetime in ZnO nanorods is studied. It is found that the exciton radiative lifetime increases with temperature as T2. Furthermore, the spectral linewidth of the photoluminescence of the ZnO nanorods also increases with temperature as T2, suggesting a linear dependence of exciton radiative lifetime on the spectral linewidth. The physics behind is that the oscillator strength of excitons at k=0 is shared equally among all the states within the spectral linewidth and the coherence extension of an exciton decreases with temperature due to the scattering by phonons, defects, or impurities.

AB - The exciton radiative lifetime in ZnO nanorods is studied. It is found that the exciton radiative lifetime increases with temperature as T2. Furthermore, the spectral linewidth of the photoluminescence of the ZnO nanorods also increases with temperature as T2, suggesting a linear dependence of exciton radiative lifetime on the spectral linewidth. The physics behind is that the oscillator strength of excitons at k=0 is shared equally among all the states within the spectral linewidth and the coherence extension of an exciton decreases with temperature due to the scattering by phonons, defects, or impurities.

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U2 - 10.1063/1.2429019

DO - 10.1063/1.2429019

M3 - Journal article

SN - 0003-6951

VL - 90

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 1

M1 - 013107

ER -

Exciton radiative lifetime in ZnO nanorods fabricated by vapor phase transport method

Abstract

ASJC Scopus subject areas

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