Researchers from the Chinese Academy of Sciences have reported that the introduction of a certain amount of graphdiyne (25%), a form of carbon material invented by Chinese scientists with independent intellectual property rights, as a host material in perovskite solar cells can successfully push the device efficiency up to 21.01%, achieving multiple positive effects of highly crystalline qualities, large domain sizes and few grain boundaries.
The researchers also revealed that the current-voltage hysteresis was negligible, and device stability was improved as well. It was found that graphdiyne as the host active material significantly affects the crystallization, film morphology and a series of optoelectronic properties of perovskite active layer.
