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Comparison of normal and inverse poly(3-hexylthiophene)/fullerene solar cell architectures

Authors
Journal
Solar Energy Materials and Solar Cells
0927-0248
Publisher
Elsevier
Publication Date
Volume
85
Issue
2
Identifiers
DOI: 10.1016/j.solmat.2004.08.001
Keywords
  • Polymer Solar Cells
  • Conjugated Polymers
  • Fullerene
  • Poly(3-Hexylthiophene) (P3Ht)

Abstract

Abstract Polymer solar cells based on regioregular poly(3-hexylthiophene) (P3HT) and ([6,6]-phenyl-C61-butyric acid methyl ester) (PCBM) were fabricated with two different architectures (normal and inverse). Normal cells using indium tin oxide (ITO) as anode and Al as cathode were fabricated on polyester foils and illuminated from substrate side. Inverse cells using Ti as cathode and ultrathin Au layer as anode were illuminated from the top side covered by a transparent Au contact. Both Au layer and PET/ITO show comparable transmission in the spectral range where P3HT absorbs. Inverse cells showed comparable device parameters to normal cell (open circuit voltage 550 mV, short circuit current 6.25 mA/cm 2, fill factor 0.33 and white light power conversion efficiency 1.12%).

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