Influence of polymer ionization potential on the open-circuit voltage of hybrid polymer/TiO2 solar cells

被引：39

作者：

Ishwara, T. ^{[1
]}

Bradley, D. D. C. ^{[1
]}

Nelson, J. ^{[1
]}

Ravirajan, P. ^{[2
]}

Vanseveren, I. ^{[3
]}

Cleij, T. ^{[3
]}

Vanderzande, D. ^{[3
]}

Lutsen, L. ^{[4
]}

Tierney, S. ^{[5
]}

Heeney, M. ^{[5
]}

McCulloch, I. ^{[5
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BW, England

[2] Univ Jaffna, Dept Phys, Jaffna 40000, Sri Lanka

[3] Univ Hasselt, B-3590 Diepenbeek, Belgium

[4] IMOMEC, IMEC, B-3590 Diepenbeek, Belgium

[5] Merck Chem, Southampton S016 7QD, Hants, England

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2840608

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report studies of the dependence of the open-circuit voltage (V(OC)) of polymer/titanium dioxide hybrid devices on the ionization potential of the polymer (I(P)). Once corrected for differences in photocarrier generation by the polymers, the measured V(OC) values vary linearly with the polymer I(P), with a slope of 0.8 +/- 0.1. This behavior agrees with recent studies of polymer/fullerene photovoltaic devices and is consistent with the hypothesis that V(OC) of an organic donor-acceptor solar cell is limited by the energy difference between the highest occupied molecular orbital of the donor (in this case, the polymer) and the lowest unoccupied electronic level of the acceptor (in this case, the conduction band edge of the TiO(2)). (c) 2008 American Institute of Physics.

引用

页数：3

共 21 条

[1] Hybrid solar cells from regioregular polythiophene and ZnO nanoparticles [J].