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Issue 37, 2008
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Sulfonated poly(diphenylamine) as a novel hole-collecting layer in polymer photovoltaic cells

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Abstract

Sulfonated poly(diphenylamine) (SPDPA) was used as a novel hole-collecting layer (HCL) in polymer photovoltaic (PV) cells. PV cells of poly(3-hexylthiophene) (P3HT):[6,6]-phenyl C61 butyric acid methyl ester used as the active layer with SPDPA as HCL showed the higher power conversion efficiency (4.2%) and fill factor (0.68) than those with commercial poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (Baytron AI 4083) (3.6% and 0.65). The morphology change of the active layer was observed using atomic force microscopy and grazing-incidence X-ray diffraction. The hole-only device was fabricated to measure hole-injection current and hole mobility. The results show increased crystallinity of P3HT with SPDPA as HCL. The enhanced device performance is attributed to the improved hole mobility and the increased crystallinity of P3HT due to the properties of SPDPA.

Graphical abstract: Sulfonated poly(diphenylamine) as a novel hole-collecting layer in polymer photovoltaic cells

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Article information


Submitted
28 Apr 2008
Accepted
03 Jul 2008
First published
13 Aug 2008

J. Mater. Chem., 2008,18, 4478-4482
Article type
Paper

Sulfonated poly(diphenylamine) as a novel hole-collecting layer in polymer photovoltaic cells

C. Li, T. Wen and T. Guo, J. Mater. Chem., 2008, 18, 4478
DOI: 10.1039/B807182A

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