论文标题
CDSE/CD(核/外壳)量子点中的净能量上转换过程,这是通往光冷却的可能途径
Net energy up-conversion processes in CdSe/CdS (core/shell) quantum dots, a possible pathway to towards optical cooling
论文作者
论文摘要
已经在锌 - 搅拌器(OR)上进行了硫化锌/镉(CDSE/CDS)核心/壳结构量子点(QD)的可能性。在我们的实验室中合成了质量样品,并在这些样品中观察到明显的能量上转化光致发光(UCPL),显示出产生净冷却效应的潜力。为了更好地理解和预测QD的UCPL特征,已经开发了一个半经验模型,与我们的实验结果表现出了很好的一致性。该模型考虑了相应的量子产率和冷却效率,从而预测了在CDSE QDS系统上实现光学制冷的可能性。
The investigation of the possibility of optical refrigeration (OR) on zinc-blende cadmium selenide/cadmium sulfide (CdSe/CdS) core/shell structure quantum dots (QDs) has been carried out. Quality samples were synthesized in our lab, and significant energy up-conversion photoluminescence (UCPL) was observed in these samples, showing the potential of generating net cooling effects. To better understand and predict the UCPL characteristics of the QDs, a semi-empirical model has been developed, showing good agreement with our experimental results. The model takes into account the corresponding quantum yield and cooling efficiency, predicting the possibility of realizing optical refrigeration on a CdSe QDs system.