STM-induced light emission from the surface of H2TBP porphyrin/PFP porphyrin/Cu(100)

被引：15
|
作者：
Guo, XL
Dong, ZC
Trifonov, AS
Miki, K
Kimura, K
Mashiko, S
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
[2] Commun Res Labs, Kobe, Hyogo 6512401, Japan
来源：
APPLIED SURFACE SCIENCE | 2005年 / 241卷 / 1-2期
关键词：
molecular fluorescence; ultrahigh-vacuum scanning tunneling microscope (UHV-STM); H2TBPP molecules; PFPP molecules; Cu(100) substrates;
D O I：
10.1016/j.apsusc.2004.09.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Molecular fluorescence from the surface of H2TBP porphyrin (H2TBPP) monolayer on the top of PFP porphyrin (PFPP) multilayers on Cu(1 0 0) substrate is studied by an ultrahigh-vacuum scanning tunneling microscope. H2TBPP molecular luminescence spectra are well defined in perfect matching with conventional photoluminescence spectra excited from the corresponding bulk molecule. The electronic states of H2TBPP monolayer are effectively decoupled from the metal surface by controlling the thickness of PFPP multilayers in a nanoscale regime. The excitation mechanism is probably attributed to the hot electron injection. These results provide a new way for the development of nanoscale molecular light source and spectroscopy. (C) 2004 Elsevier B.V. All rights reserved.
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页码：28 / 32
页数：5
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