| 초록 |
Two donor-π‐bridge-donor (D–π–D) type organic small molecules coded PEH-13, and PEH-14 are designed, synthesized, and used as hole transporting materials for perovskite solar cells (PSCs). The impact of structural linking on their optical, thermal, electrophysical, and photovoltaic properties was thoroughly investigated by the experimental methods. New HTMs were successfully applied in perovskite solar cells, which yielded a promising efficiency of up to almost 19% under standard 100 mW cm–2 global AM1.5G illumination and showed a better stability tendency outperforming that of Spiro_OMeTAD. This work provides guidance for the molecular design strategy of effective hole-conducting materials for perovskite photovoltaics. |
