Near-edge X-ray absorption fine structure study of the C60-derivative PCBM

被引：18

作者：

Brumboiu, I. E. ^{[1
]}

Anselmo, A. S. ^{[2
]}

Brena, B. ^{[1
]}

Dzwilewski, A. ^{[2
]}

Svensson, K. ^{[2
]}

Moons, E. ^{[2
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden

[2] Karlstad Univ, Dept Phys & Elect Engn, SE-65188 Karlstad, Sweden

来源：

CHEMICAL PHYSICS LETTERS | 2013年 / 568卷

基金：

瑞典研究理事会;

关键词：

MOLECULAR-ORIENTATION; BLEND FILMS; ENERGY; APPROXIMATION; SPECTROSCOPY; SPECTRA; PHASE;

D O I：

10.1016/j.cplett.2013.03.031

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：

The fullerene derivative [6,6]-phenyl-C-61-butyric acid methyl ester plays a key role for electron transport in polymer solar cells. We have studied the unoccupied molecular orbitals of PCBM by near edge X-ray absorption fine structure spectroscopy and were able to assign the main resonances to molecular moieties by comparison with calculated sum spectra of individual carbons. We analyzed specifically the origin of the high-energy shoulder to the first pi*-resonance and identified contributions from the lowest-energy transition of a specific carbon in the phenyl and from transitions to higher unoccupied orbitals of the unmodified carbons in the C-60-cage. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：130 / 134

页数：5

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