Surface states controlled broadband enhancement of two-photon absorption

Surface states controlled broadband enhancement of two-photon absorption
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表面态控制双光子吸收的宽带增强

DOI:
10.1063/1.4842055
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发表时间:
2013-12
影响因子:
4
通讯作者:
Cui, Yiping
Cui, Yiping
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhou, Zhiqiang;Lu, Changgui;Xu, Shuhong;Jiang, Yuan;Yun, Binfeng;Wang, Chunlei;Cui, Yiping

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通过控制Co2+掺杂CdTe量子点的表面态,我们证明了在710 ~ 960 nm的宽光谱范围内双光子吸收的可控宽带增强,这与表面势和荧光衰减的测量结果一致.通过改变决定表面状态的掺杂剂浓度,可以在1和1.7之间的范围内调节增强。
We demonstrate the controllable broadband enhancement of two-photon absorption in a wide spectral range from 710 nm to 960 nm by controlling the surface states of aqueous Co2+ doped CdTe quantum dots, which is consistent with the measurement results of surface potential and fluorescence decay. The enhancement can be tuned in the range between 1 and 1.7 by changing the dopant concentrations that determine the surface states.
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