Plasmon-induced fluorescence and electroluminescence from porphine molecules on GaAs(110) in a scanning tunneling microscope
Plasmon-induced fluorescence and electroluminescence from porphine molecules on GaAs(110) in a scanning tunneling microscope
复制标题
DOI：
10.1063/1.4767351
复制
发表时间：
2012-11
影响因子：
4
通讯作者：
Svenja Mühlenberend;N. L. Schneider;M. Gruyters;R. Berndt
中科院分区：
文献类型：
--
作者：
Svenja Mühlenberend;N. L. Schneider;M. Gruyters;R. Berndt
利用扫描隧道显微镜尖端的表面等离子激元极化激子，以极低的覆盖率诱导GaAs（110）表面(5,10,15,20)-四苯基-21 H，23 H-卟啉分子的荧光。荧光光谱显示振动分辨q带跃迁表明发光是分子起源的。隧穿电流不直接引起发射。相反，来自尖端等离子体模式的无辐射能量转移导致分子激发。
Surface plasmon polaritons of the tip of a scanning tunneling microscope are used to induce fluorescence from (5,10,15,20)-tetraphenyl-21 H,23 H-porphine molecules on GaAs(110) surfaces at very low coverages. Fluorescence spectra exhibiting vibrationally resolved Q-band transitions show that the luminescence is of molecular origin. The emission is not directly induced by the tunneling current. Rather, radiationless energy transfer from plasmon modes of the tip leads to molecular excitation.