The [60]IPX fullerenes give 50 mV higher open circuit voltage than [60]PCBM. In P3HT  solar cells, the efficiency is increased by 10-15% compared to [60]PCBM. These  compounds have recently been published  We have now also prepared the corresponding C70-derivatives! Solenne BV – Zernikepark 6 – 9747AN Groningen – The Netherlands – info@solennebv.com © 2014 Solenne BV  Products – [70]IPX [70]IPB   R = butyl Quantity Price 0.10 g    110 euro 0.25 g    270 euro 0.50 g     500 euro for larger quantities: inquire Purity is 99% by HPLC. These C70-derivatives are sold as mixture of isomers. More product information will be available soon. [70]IPX back to products page [70]IPH   R = hexyl Quantity Price 0.10 g    110 euro 0.25 g    270 euro 0.50 g     500 euro for larger quantities: inquire