Correlation between interface energetics and open circuit voltage in organic photovoltaic cells

被引：84

作者：

Wilke, A. ^{[1
]}

Endres, J. ^{[2
]}

Hoermann, U. ^{[3
]}

Niederhausen, J. ^{[1
]}

Schlesinger, R. ^{[1
]}

Frisch, J. ^{[1
]}

Amsalem, P. ^{[1
]}

Wagner, J. ^{[3
]}

Gruber, M. ^{[3
]}

Opitz, A. ^{[1
]}

Vollmer, A. ^{[4
]}

Bruetting, W. ^{[3
]}

Kahn, A. ^{[2
]}

Koch, N. ^{[1
,4
]}

机构：

[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[3] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

[4] Helmholtz Zentrum Berlin Mat & Energie GmbH BESSY, D-12489 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 23期

基金：

美国国家科学基金会;

关键词：

ENERGY-LEVEL ALIGNMENT; SOLAR-CELLS; CHARGE-TRANSFER; ELECTRONIC-STRUCTURES; STATES; DIINDENOPERYLENE; HETEROJUNCTION; PHOTOEMISSION; ACCEPTOR; DIPOLES;

D O I：

10.1063/1.4769360

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have used ultraviolet and inverse photoemission spectroscopy to determine the transport gaps (E-t) of C-60 and diindenoperylene (DIP), and the photovoltaic gap (E-PVG) of five prototypical donor/acceptor interfaces used in organic photovoltaic cells (OPVCs). The transport gap of C-60 (2.5 +/- 0.1) eV and DIP (2.55 +/- 0.1) eV at the interface is the same as in pristine films. We find nearly the same energy loss of ca 0.5 eV for all material pairs when comparing the open circuit voltage measured for corresponding OPVCs and E-PVG. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769360]

引用

页数：4

共 28 条

[1] Unoccupied states in copper phthalocyanine/fullerene blended films determined by inverse photoemission spectroscopy [J].