纳秒激光脉冲泵浦核壳结构量子点的散射特性

2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO) Pub Date : 2017-08-01 DOI:10.1109/3M-NANO.2017.8286302

Yu Chen, Yanxin Yu, Chunyang Wang

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引用次数: 0

摘要

在仿真和实验的基础上，研究了532 nm激光脉冲泵浦下CdTe/ZnS量子点的模拟散射特性。与CdTe量子点相比，CdTe/ZnS量子点表现出红色频移，散射强度较低，但在1064 nm纳秒激光脉冲下表现出非线性透射，具有更高的化学/物理稳定性，非线性透射率是CdTe量子点的1.12倍。CdTe/ZnS量子点的能谱(EDS)数据清楚地揭示了CdTe/ZnS量子点中存在Cd、Zn和S组分。量子点的这些散射特性使得它们在生物传感器和自适应光学中有特殊的应用。

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Scattering characteristics of core/shell structured quantum dots pumped by nanosecond laser pulses

This paper reports the simulated scattering characteristics of CdTe/ZnS quantum Dots (QDs) pumped by 532-nm laser pulses based on the simulation and experiment. Comparing to CdTe QDs, the CdTe/ZnS QDs exhibit a red frequency-shift, a lower scattering intensity, but exhibit a nonlinear transmission under 1064-nm nanosecond laser pulses, more chemical/physical stability, the nonlinear transmission is 1.12times than that of CdTe QDs. The energy-dispersive spectroscopy (EDS) data of CdTe/ZnS QDs clearly revealed the Cd, Zn and S components exsit in the CdTe/ZnS QDs. These scattering characteristics of QDs make them find special applications in biosensor and Self-adapted optics.

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2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)

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