Current Position:Home >> News Center

How to improve the stability of perovskite solar battery?

Publisher:glory Published date:2017-11-23 Hits:942
Introduction: Organic / inorganic hybrid perovskite batteries have attracted much attention due to their advantages of low cost, low temperature flexibility and easy printing in large area. In the past ten years, the research of perovskite battery has developed rapidly, and its photoelectric conversion efficiency has rapidly increased from 2.2% to 22.1%,which is close to the level of silicon solar battery.

Organic / inorganic hybrid perovskite batteries have attracted much attention because of their low cost, low temperature flexibility and easy printing in large area. In the past ten years, the research and development of perovskite battery has developed rapidly, and its photoelectric conversion efficiency has been rapidly increased from 2.2% to 22.1% (Figure 1), which is close to the level of silicon solar battery.The perovskite solar battery have also developed rapidly. Therefore, perovskite solar battery has great prospects for development.

The application for perovskite battery will be influenced by the stability of the battery,and that is the main reason.The perovskite battery can work in few months only in the causative condition (Figure 1 below), while the traditional silicon solar battery can work more than 25 years at present. Therefore, how to improve the stability of perovskite batteries is the most important issue in this field, and scientists all over the world are competing to do this work.The University of California at Los Angeles professor Yang Yang and the You Jing Bi research of Chinese Semiconductor Institute Researcher were invited by "natural" magazine to wrote the article which the entitle is Make perovskite solar battery stable (Yang Yang, Jingbi review of You, Nature, 544155 156 (2017)).

In view of the current research progress, they summarized five methods to improve the stability of perovskite solar battery:

1) to control the crystal structure of perovskite materials and improve the phase stability of perovskite materials by a small amount of doping;

2) to reduce the defects of perovskite crystals and reduce the permeation channels of the external environment;

3) Design new stable perovskite materials;

4) A stable inorganic charge transport layer is adopted;

5) Improve packaging process. At the same time, they call for more funds and researcher participation in the work to improving stability;

Theoretical physicists, materials chemists and device engineers should work closely together to develop and research new stable perovskite based solar materials and devices. In addition, the researchers must adopt a unified stability test standard when reporting device stability. Only in this way can we speed up the commercialization process of perovskite batteries and be used by people.



 Prev: German "Sonnenwagen Aachen": Solar Energy Is Everywhere

 Next: Amazing Solar Energy! Using Ambient Light And Print Solar Battery To Charge Cellphone