Benzo [c] thiophene–C60 Diadduct: An Electron Acceptor for p–n Junction Organic Solar Cells Harvesting Visible to Near??IR Light

…, N Obata, Y Matsuo, E Nakamura

Index: Zhen, Yonggang; Obata, Naoki; Matsuo, Yutaka; Nakamura, Eiichi Chemistry - An Asian Journal, 2012 , vol. 7, # 11 p. 2644 - 2649,6

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Citation Number: 7

Abstract

Abstract We synthesized a new 56-π-electron fullerene derivative through a Diels–Alder cycloaddition of benzo [c] thiophene that featured a relatively low temperature, closer to stoichiometric use of the diene, and easy product purification. The 56-π-electron benzo [c] thiophene diadduct (BTCDA) has a LUMO energy level of 0.09 to 0.18 eV higher than that of 58-π-electron fullerenes, and therefore, the BTCDA-based organic photovoltaic device ...