Higgins L J, Karanikolas V D, Marocico C A, Bell A P, Sadler T C, Parbrook P J, Bradley A L
Opt Express. 2015 Jan 26;23(2):1377-87. doi: 10.1364/OE.23.001377.
An array of Ag nanoboxes fabricated by helium-ion lithography is used to demonstrate plasmon-enhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure. The nonradiative energy transfer, from an InGaN/GaN quantum well to CdSe/ZnS nanocrystal quantum dots embedded in an ~80 nm layer of PMMA, is investigated over a range of carrier densities within the quantum well. The plasmon-enhanced energy transfer efficiency is found to be independent of the carrier density, with an efficiency of 25% reported. The dependence on carrier density is observed to be the same as for conventional nonradiative energy transfer. The plasmon-coupled energy transfer enhances the QD emission by 58%. However, due to photoluminescence quenching effects an overall increase in the QD emission of 16% is observed.
通过氦离子光刻制造的银纳米盒阵列用于证明混合量子阱-量子点结构中的等离子体增强非辐射能量转移。研究了从InGaN/GaN量子阱到嵌入约80nm厚聚甲基丙烯酸甲酯（PMMA）层中的CdSe/ZnS纳米晶体量子点的非辐射能量转移，该转移过程覆盖了量子阱内一系列载流子密度范围。发现等离子体增强能量转移效率与载流子密度无关，报道的效率为25%。观察到对载流子密度的依赖性与传统非辐射能量转移相同。等离子体耦合能量转移使量子点发射增强了58%。然而，由于光致发光猝灭效应，观察到量子点发射总体增加了16%。
