Hou Jianhui, Inganäs Olle, Friend Richard H, Gao Feng
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Biomolecular and organic electronics, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-58183, Sweden.
Nat Mater. 2018 Jan 23;17(2):119-128. doi: 10.1038/nmat5063.
Organic solar cells (OSCs) have been dominated by donor:acceptor blends based on fullerene acceptors for over two decades. This situation has changed recently, with non-fullerene (NF) OSCs developing very quickly. The power conversion efficiencies of NF OSCs have now reached a value of over 13%, which is higher than the best fullerene-based OSCs. NF acceptors show great tunability in absorption spectra and electron energy levels, providing a wide range of new opportunities. The coexistence of low voltage losses and high current generation indicates that new regimes of device physics and photophysics are reached in these systems. This Review highlights these opportunities made possible by NF acceptors, and also discuss the challenges facing the development of NF OSCs for practical applications.
二十多年来，基于富勒烯受体的供体-受体共混物一直主导着有机太阳能电池（OSC）领域。最近这种情况发生了变化，非富勒烯（NF）有机太阳能电池发展迅速。目前，NF有机太阳能电池的功率转换效率已超过13%，高于最好的基于富勒烯的有机太阳能电池。NF受体在吸收光谱和电子能级方面表现出很大的可调性，提供了广泛的新机会。低电压损失和高电流产生的共存表明，这些系统已达到器件物理和光物理的新状态。本综述重点介绍了NF受体带来的这些机会，并讨论了NF有机太阳能电池实际应用开发面临的挑战。
