In:
Applied Physics Letters, AIP Publishing, Vol. 90, No. 18 ( 2007-04-30)
Abstract:
Bulk heterojunction photovoltaic cells, comprised of regioregular-poly(3-hexylthiophene-2,5-diyl) (P3HT) and[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) in the presence of the surfactant, oleic acid (OA), have been studied. The device with OA after thermal annealing has a power conversion efficiency (ηe) of 4.3%, while the devices without OA after thermal annealing have ηe=3.1%. Based on atomic force microscopy, x-ray diffraction investigation found that with OA, the P3HT-PCBM films have better molecular local ordering after thermal annealing resulting in larger donor and acceptor interfaces and higher mobility, thereby higher performance of the photovoltaic cell.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2007
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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