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

X. H. Zhang, S. J. Chua, A. M. Yong, H. Y. Yang, S. P. Lau, S. F. Yu, X. W. Sun, Lei Miao, Masaki Tanemura, Sakae Tanemura

研究成果: Article査読

73 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号013107
ジャーナルApplied Physics Letters
90
1
DOI
出版ステータスPublished - 2007
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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