2020, Vol.6 No.3
The cover picture shows the application of ferroelectric materials in solar cells such as ferroelectric solar cells, ferroelectric-semiconductor solar cells, dye-sensitized solar cells, perovskite solar cells and organic thin film solar cells. They can form the measurable macroscopic electric field inside ferroelectric materials film that can be used as built-in electric field for photovoltaic devices to separate electron-hole pairs and facilitate their transport. Therefore, the light-to-electric conversion efficiency of these cells is effectively improved. More details are discussed in the article by Zhang et al. on page 190032.