Cascaded plasmon-plasmon coupling mediated energy transfer across stratified metal-dielectric nanostructures.

Cascaded plasmon-plasmon coupling mediated energy transfer across stratified metal-dielectric nanostructures.
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DOI:
10.1038/srep34086
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发表时间:
2016-10-04
期刊:
影响因子:
4.6
通讯作者:
Sun XW
Sun XW
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Golmakaniyoon S;Hernandez-Martinez PL;Demir HV;Sun XW

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Surface plasmon (SP) coupling has been successfully applied to nonradiative energy transfer via exciton-plasmon-exciton coupling in conventionally sandwiched donor-metal film-acceptor configurations. However, these structures lack the desired efficiency and suffer poor photoemission due to the high energy loss. Here, we show that the cascaded exciton-plasmon-plasmon-exciton coupling in stratified architecture enables an efficient energy transfer mechanism. The overlaps of the surface plasmon modes at the metal-dielectric and dielectric-metal interfaces allow for strong cross-coupling in comparison with the single metal film configuration. The proposed architecture has been demonstrated through the analytical modeling and numerical simulation of an oscillating dipole near the stratified nanostructure of metal-dielectric-metal-acceptor. Consistent with theoretical and numerical results, experimental measurements confirm at least 50% plasmon resonance energy transfer enhancement in the donor-metal-dielectric-metal-acceptor compared to the donor-metal-acceptor structure. Cascaded plasmon-plasmon coupling enables record high efficiency for exciton transfer through metallic structures.
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