Influence of side chain of [6,6]-phenyl-C61-butyric acid methyl ester on interfacial electronic structure of [6,6]-phenyl-C61-butyric acid methyl ester/Ag substrate

被引：9

作者：

Akaike, Kouki ^{[1
]}

Kanai, Kaname ^{[2
]}

Ouchi, Yukio ^{[1
]}

Seki, Kazuhiko ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Sci, Dept Chem, Chikusa Ku, Nagoya, Aichi 4648602, Japan

[2] Nagoya Univ, Res Ctr Mat Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 04期

关键词：

Fermi level; fullerene compounds; interface states; organic compounds; silver; X-ray photoelectron spectra; FIELD-EFFECT TRANSISTORS; CHARGE NEUTRALITY LEVEL; ORGANIC SOLAR-CELLS; FULLERENE DERIVATIVES; DIPOLE FORMATION; METAL; LAYERS; C-60;

D O I：

10.1063/1.3076121

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Interfacial electronic structure of [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM)/Ag substrate was investigated. The interfacial states, derived from the lowest unoccupied molecular orbital of PCBM, are formed around the Fermi level. The vacuum level (VL) was lowered by the positively charged PCBM molecules at the interface, although the VL was raised at C-60/Ag interfaces. The x-ray photoelectron spectra revealed that the oxygen atoms of the side chain of PCBM are positively charged at the interface due to the electron transfer to Ag substrate, leading the lowering of the VL. The side chain of PCBM strongly influences the interfacial electronic structure.

引用

页数：3

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