High Efficiency Organic Photovoltaics Incorporating a New Family of Soluble Fullerene Derivatives

A novel class of soluble fullerenoids based on a dihydronaphthyl functionalization have been synthesized and characterized. Initial testing of these materials in photovoltaic devices identifies a new soluble fullerene derivative, which when blended with poly(3-hexylthiophene) is capable of 4.5% power conversion efficiencies under standard illumination conditions.