The influence of illumination on two-photon absorption of quantum dots

The influence of illumination on two-photon absorption of quantum dots
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光照对量子点双光子吸收的影响

DOI:
10.1142/s0218863518500315
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发表时间:
2018-09
影响因子:
2.7
通讯作者:
Naifei Ren
Naifei Ren
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Zhiqiang Zhou;Jiawei Cong;Hong Bing Yao;Yonghong Fu;Naifei Ren

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研究了365[式:见正文]nm紫外光照射对水溶液中Co[式:见正文]掺杂CdTe(CdTe:Co)量子点双光子吸收(TPA)的影响。结果表明,随着光照时间的增加,CdTe:Co量子点的TPA截面增大。实验结果表明,这种增强是由于减少了表面非辐射陷阱,这是一致的表面上的CdTe:Co量子点的CdS壳的形成。结果表明,水溶液CdTe:Co量子点具有良好的光限幅和光稳定性能。这提供了通过照明的TPA增强的策略。
The influence of illumination with 365[Formula: see text]nm ultraviolet light on two-photon absorption (TPA) of aqueous Co[Formula: see text] doped CdTe (CdTe:Co) quantum dots (QDs) is studied. The results show that with the increase of illumination time, the TPA cross section of the CdTe:Co QDs increases. The experimental results suggest that this enhancement is due to the reduction of surface nonradiative traps which is consistent with the formation of CdS shell on the surface of CdTe:Co QDs. Meanwhile, the results indicate that aqueous CdTe:Co QDs have good optical limiting and optical stabilization performances. This provides a strategy of TPA enhancement by illumination.
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发表时间: 2007-03-07
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期刊: Optics letters
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