文摘
Front Cover: A novel block 2TPF4 is successfully used in constructing polymers PBT-2TPF4, PffBT-2TPF4. It is demonstrated that 2TPF4 is a promising acceptor block for construction of the donor copolymers for polymer solar cells (PSCs) which possess high Voc and long-term stability. This finding could accelerate the commercialization of PSCs in the future. Further details can be found in article 1600556 by X. Liao, F. Wu, Y. An, Q. Xie, L. Chen,* and Y. Chen*.