Semitransparent Perovskite Solar Cells With Dielectric-Metal-Dielectric Electrode Passivated by Antioxidant Dibutylhydroxytoluene

In recent years, research on perovskite solar cells has mainly focused on improving their efficiency and stability, in order to promote the progress of perovskite solar cells towards commercial applications. Herein, we introduced the effect of antioxidant dibutylhydroxytoluene (BHT) as an upper surface passivator to optimize the performance of perovskite solar cells. On one hand, the hydroxyl group in BHT interacts with I $^{-}$ to inhibit non radiative recombination and improve the performance of perovskite solar cell. On other hand, the hydrophobic groups in BHT protect the perovskite film from water vapor damage and improve the stability of PSC. The PCE of the optimal device is 22.46%, and it can maintain 90% of the initial efficiency even after being stored at room temperature in an air atmosphere for 500 hours. In addition, we also optimized the semitransparent perovskite solar cell using DMD electrodes using the above method with 15.81% PCE.