文摘
Organic solar cells are based on the photoinduced separation of charges at donor–acceptor interfaces and on the transport of these charges to the electrodes through n-type and p-type materials. Carbon nanostructures, such as fullerenes and carbon nanotubes, are considered to be the most effective electron-acceptors, and their use is widely spread. Besides, proper electron-donor and light-harvesting molecules are also fundamental for organic photovoltaics. Phthalocyanines are excellent candidates to play the dual role of p-type materials and antennas. Moreover, their structural and synthetic versatility allows them to act as donors or acceptors depending on their counterpart materials in the device. Herein, such functional dualities will be reviewed with regard to the use of phthalocyanines in donor/acceptor systems for photovoltaic devices.