Topography Dependence of Tunneling-Induced Fluorescence from Porphyrin Film
Topography Dependence of Tunneling-Induced Fluorescence from Porphyrin Film
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卟啉薄膜隧道诱导荧光的形貌依赖性
DOI：
10.1143/jjap.45.l627
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发表时间：
2006
影响因子：
1.5
通讯作者：
H. Iwasaki
中科院分区：
文献类型：
--
作者：
R. Nishitani;M. Tobaru;A. Kasuya;Hongwen Liu;H. Iwasaki
在超高真空(UHV)系统中，用扫描隧道显微镜(STM)测量了H_2TBPP膜在Au表面的空间分辨和光谱分辨分子荧光。由此得到的隧道诱导光子强度图与STM灰度地形图具有相似的对比度，表明较强的隧穿发光来自于STM图像中较高的地形。这种关联与以前报道的纯金等离子体光发射光子图与其表面形貌之间的关联是相同的。这一结果支持了表面等离子体增强分子荧光(SEMF)的机理，即表面等离子体增强了有机薄膜中的隧穿电子诱导的分子荧光。
We have measured spatially and spectrally resolved molecular fluorescence for H2TBPP film on Au excited by a scanning tunneling microscope (STM) in an ultrahigh vacuum (UHV) system. The tunneling-induced photon intensity map thus obtained shows a similar contrast to the STM grey-scale topography image, and indicates that the stronger tunneling luminescence comes from the higher topographies in STM image. This correlation is the same as the previously-reported correlation between the photon map of plasmon-mediated light emission for pure gold and its topography. This result supports the mechanism of surface-plasmon enhanced molecular fluorescence (SEMF), i.e., tunneling-electrons-induced molecular fluorescence in organic film is enhanced by the surface plasmons.
扫描隧道显微镜 (STM) 激发卟啉薄膜的分子荧光
DOI：
--
发表时间：
2005
期刊：
Japan. J. Appl. Phys. Part 2 44・16-19
影响因子：
--
作者：
Y.Murata;K.Komatsu et al.;K.Kanemoto;T.Kitagawa;S.Tsuda;小松紘一;C.Honda;小松紘一;小松紘一;Y.Ie;K.Komatsu;Y.Ie;M.Fujitsuka;H.W.Liu
通讯作者：
H.W.Liu