The Role of the Axial Substituent in Subphthalocyanine Acceptors for Bulk-Heterojunction Solar Cells
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- 作者：Dr. Chunhui Duan ; Germá ; n Zango ; Dr. Miguel Garcí ; a Iglesias ; Fallon J. M. Colberts ; Dr. Martijn M. Wienk ; Prof. M. Victoria Martí ; nez-Dí ; az ; Prof. René ; A. J. Janssen and Prof. Tomá ; s Torres
- 刊名：Angewandte Chemie
- 出版年：2017
- 出版时间：January 2, 2017
- 年：2017
- 卷：129
- 期：1
- 页码：154-158
- 全文大小：2198K
- ISSN：1521-3757
文摘
Four hexachlorosubphthalocyanines SubPcCl6-X bearing different axial substituents (X) have been synthesized for use as novel electron acceptors in solution-processed bulk-heterojunction organic solar cells. Subphthalocyanines are aromatic chromophoric molecules with cone-shaped structure, good solution processability, intense optical absorption in the visible spectral region, appropriate electron mobilities, and tunable energy levels. Solar cells with subphthalocyanines as the electron acceptor and PTB7-Th as the electron donor exhibit a power conversion efficiency up to 4 % and an external quantum efficiency approaching 60 % due to significant contributions from both the electron donor and the electron acceptor to the photocurrent, indicating a promising prospect of non-fullerene acceptors based on subphthalocyanines and structurally related systems.