Synthesis of thienyl analogues of PCBM and investigation of morphology of mixtures in P3HT

• Fukashi Matsumoto,
• Kazuyuki Moriwaki,
• Yuko Takao and
• Toshinobu Ohno

Beilstein J. Org. Chem. 2008, 4, No. 33, doi:10.3762/bjoc.4.33

• ]. Recently, bulk heterojunction solar cells consisting of a conjugated polymer (donor) and fullerene derivatives (acceptors) have inspired much scientific research owing to these reasons [8][9]. In this research, it has been demonstrated that the PV cells based on regio-regular poly(3-hexylthiophene) (P3HT

• rare methanofullerene that has greater solubility than PCBM. The improvement in solubility by just adding an ester group is very informative and promising for further development of methanofullerenes. Bulk heterojunction solar cells using newly synthesized methanofullerenes are being fabricated and

• crystallinity of the polymer [13][14], and controlling the growth rate of the organic film [15][16]. These studies reported that the morphology of the active layer is a critical factor that determines the device efficiency. Investigations have been performed for exploring new donor materials for bulk