Charge-transfer effect at the interface of phthalocyanine-electrode contact studied by scanning tunneling spectroscopy.
Charge-transfer effect at the interface of phthalocyanine-electrode contact studied by scanning tunneling spectroscopy.
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DOI：
10.1021/jp0535036
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发表时间：
2006-01
期刊：
影响因子：
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通讯作者：
S. Lei;K. Deng;Deliang Yang;Q. Zeng;Chen Wang
中科院分区：
文献类型：
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作者：
S. Lei;K. Deng;Deliang Yang;Q. Zeng;Chen Wang
利用扫描隧道显微镜（STM）和光谱学（STS）研究了取代金属酞菁在分子-基质界面上的电荷转移效应。STS结果表明，氟化酞菁和未取代酞菁的表观能隙基本相同，这与混合密度泛函计算结果一致。更有趣的是，价带的能级有系统的移动，可能是由于分子-底物界面上的电荷转移效应。
Scanning tunneling microscopy (STM) and spectroscopy (STS) are used in this work to investigate the charge-transfer effect at the molecule-substrate interface of substituted metal phthalocyanines. STS results revealed that the apparent energy gaps for both fluorinated phthalocyanines and unsubstituted phthalocyanines are essentially the same, which agree with the hybrid density functional calculations. More interestingly, there is a systematic shift of the energy level of valence bands, possibly as the result of charge-transfer effect at the molecule-substrate interface.