Characterizing quantum-dot blinking using noise power spectra

Characterizing quantum-dot blinking using noise power spectra
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DOI:
10.1063/1.1779356
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发表时间:
2004-08-02
影响因子:
4
通讯作者:
Guyot-Sionnest, P
Guyot-Sionnest, P
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Pelton, M;Grier, DG;Guyot-Sionnest, P

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来自胶体半导体量子点的宏观集合的荧光中的波动具有1/f噪声的光谱形式。所测得的功率谱密度反映了单个点的“开”和“关”时间的幂律分布的荧光不稳定性,因此可以作为表征这种闪烁行为的简单方法。(C)2004年,美国物理学会。
Fluctuations in the fluorescence from macroscopic ensembles of colloidal semiconductor quantum dots have the spectral form of 1/f noise. The measured power spectral density reflects the fluorescence intermittency of individual dots with power-law distributions of "on" and "off" times, and can thus serve as a simple method for characterizing such blinking behavior. (C) 2004 American Institute of Physics.