Details

Autor(en) / Beteiligte

• Zhou, Nanjia
• Guo, Xugang
• Ortiz, Rocio Ponce
• Li, Shiqiang
• Zhang, Shiming
• Chang, Robert P. H.
• Facchetti, Antonio
• Marks, Tobin J.

Titel

Bithiophene Imide and Benzodithiophene Copolymers for Efficient Inverted Polymer Solar Cells

Ist Teil von

• Advanced materials (Weinheim), 2012-05, Vol.24 (17), p.2242-2248

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• Bithiophene imide (BTI) and benzodithiophene (BDT) copolymers are synthesized for application in organic photovoltaic (OPV) cells. The electron deficiency of the BTI units leads to polymers with a low‐lying HOMOs (∼‐5.6 eV). Inverted solar cells are fabricated to investigate the OPV performance of the BTI‐based polymers and achieve power conversion efficiencies up to 5.5%, with substantial Vocs above 0.9 V which are among the highest Vocs reported to date for polymer/PCBM solar cells. The results indicate that the BTI is a promising building block for constructing polymer donors for OPV applications.