Core-shell quantum dots (QDs) have gained immense significance in various technological applications due to their unique size-dependent optical properties. However, their efficiency in lightning and display applications can be limited by fluorescence intermittency or blinking which limits the viability of the QDs. In this work, a theoretical study on the causes and mitigation process of the blinking phenomenon in core-shell QDs has been carried out. An approach to eliminate blinking behavior is to modify the traditional core-shell structure where the interface between the core and shell materials is discontinuous and abrupt. A graded alloy core-shell QD where there is a gradual transition between pure core material and pure shell material shows suppressed blinking behavior. Another alternate strategy is the growth of core-shell QDs with giant shell structures and appropriate surrounding matrix considering the traps being few nanometers away from the core. The study of the effect of fluctuations in the local environment of the QDs helps in understanding the mechanisms of blinking and hence in curtailing its effect. These approaches have been applied and analyzed to suppress the blinking phenomenon and improve the optical properties of QDs.

中文翻译：

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通过结构公式抑制闪烁和增强核壳量子点的光学特性

核壳量子点 (QD) 由于其独特的尺寸相关光学特性而在各种技术应用中获得了巨大的意义。然而，它们在闪电和显示应用中的效率可能会受到荧光间歇性或闪烁的限制，这限制了 QD 的可行性。在这项工作中，对核壳量子点中闪烁现象的原因和缓解过程进行了理论研究。消除闪烁行为的一种方法是修改传统的核壳结构，其中核壳材料之间的界面是不连续和突变的。纯核材料和纯壳材料之间逐渐过渡的分级合金核壳 QD 显示出抑制的闪烁行为。另一个替代策略是考虑到陷阱距离核心几纳米，具有巨大壳结构和适当的周围基质的核壳 QD 的生长。研究量子点局部环境波动的影响有助于理解眨眼的机制，从而减少其影响。这些方法已被应用和分析以抑制闪烁现象并改善 QD 的光学特性。