Blinking Behavior of Surface-Defect and Impurity Luminescence in Nondoped and Mn<SUP>2+</SUP>-Doped CdS Nanocrystals

Blinking Behavior of Surface-Defect and Impurity Luminescence in Nondoped and Mn<SUP>2+</SUP>-Doped CdS Nanocrystals
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非掺杂和Mn<SUP>2</SUP>掺杂CdS纳米晶表面缺陷和杂质发光的闪烁行为

DOI:
10.1143/jpsj.78.083705
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发表时间:
2009
影响因子:
1.7
通讯作者:
A. Ishizumi and Y. Kanemitsu
A. Ishizumi and Y. Kanemitsu
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
M. Ichimiya;K. Mochizuki;M. Ashida;H. Yasuda;H. Ishihara and T. Itoh;小山剛史;A. Ishizumi and Y. Kanemitsu

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本文报道了用单光子发射光谱法研究了未掺杂和Mn掺杂CdS/ZnS纳米晶在室温下的光致发光闪烁行为。在未掺杂的单一CdS/ZnS纳米晶的表面缺陷发光中观察到明显的闪烁现象。然而,在锰掺杂的CdS/ZnS纳米晶中,PL闪烁被显着抑制,并且与Mn 2+相关的PL具有较长的持续时间。我们的研究结果表明,Mn 2+离子激发的快速能量转移从光激发激子在中性和电离的CdS/ZnS纳米晶体。我们讨论了从主机纳米晶体的Mn 2+离子的能量转移过程。
We report on the photoluminescence (PL) blinking behavior of nondoped and Mn-doped CdS/ZnS nanocrystals studied using single nanocrystal spectroscopy at room temperature. The blinking phenomenon is clearly observed in the surface-defect luminescence of nondoped single CdS/ZnS nanocrystals. In Mn-doped CdS/ZnS nanocrystals, however, PL blinking is markedly suppressed, and the Mn2+-related PL has a longon-time. Our findings indicate that Mn2+ions are excited by fast energy transfer from photoexcited excitons in both neutral and ionized CdS/ZnS nanocrystals. We discuss energy transfer processes from the host nanocrystals to the Mn2+ions.
半磁性量子点的动态自旋响应。
DOI: --
发表时间: 2001
影响因子: 8.6
作者:
J. Seufert;G. Bacher;M. Scheibner;A. Forchel;Sang Hoon Lee;M. Dobrowolska;J. Furdyna
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DOI: 10.1063/1.1494468
发表时间: 2002-07-15
影响因子: 4
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通讯作者: White, CW
DOI: 10.1063/1.1952576
发表时间: 2005-06-20
影响因子: 4
作者:
Ishizumi, A;Kanemitsu, Y
通讯作者: Kanemitsu, Y
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DOI: 10.1103/physrev.146.554
发表时间: 1966
期刊: Physical Review
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作者:
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