Low work function metal modified ITO as cathode for inverted polymer solar cells

Inverted polymer solar cells using an ultrathin layer (∼1 nm) of low work function metal (Ca, Mg, Al, and Ag) on indium tin oxide (ITO) substrate as the cathode, MoO 3/Au as the anode, and a blend of poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 (PCBM) as the activ...

Full description

Saved in:
Bibliographic Details
Published in:Solar energy materials and solar cells 2010-10, Vol.94 (10), p.1618-1621
Main Authors: Jiang, Chang Yun, Sun, Xiao Wei, Zhao, De Wei, Kyaw, Aung Ko Ko, Li, Yu Ning
Format: Article
Language:English
Subjects:
Air stability
Applied sciences
Cathodes
Conversion
Electrical engineering. Electrical power engineering
Energy
Exact sciences and technology
Gold
Indium tin oxide
Inverted polymer solar cells
ITO cathode
Materials
Natural energy
Organic photovoltaics
Photovoltaic cells
Photovoltaic conversion
Silver
Solar cells
Solar cells. Photoelectrochemical cells
Solar energy
Surface modification
Work functions
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Inverted polymer solar cells using an ultrathin layer (∼1 nm) of low work function metal (Ca, Mg, Al, and Ag) on indium tin oxide (ITO) substrate as the cathode, MoO 3/Au as the anode, and a blend of poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 (PCBM) as the active layer were investigated. A comparative study between the conventional forward (ITO/MoO 3/P3HT:PCBM/Ca/Ag) and inverted (ITO/Ca/P3HT:PCBM/MoO 3/Au) cells shows that the inverted cell has an increase of 29% in power conversion efficiency and an increase of 750% in the cell’s shelf lifetime when compared with the corresponding forward cell. The enhancement of efficiency for the inverted cell is due to reduced charge recombination, while the improvement of air stability is due to the better protection of the air sensitive low work function metal in the inverted cell.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2010.04.082