Abstract |
Through a functional unit-transmutation strategy, a fatigue-free layered hybrid perovskite ferroelectric (C6 H5 CH2 NH3 )2 CsPb2 Br7 (BCPB) has been developed, which demonstrates stable spontaneous polarization (Ps ) of 6.5 μC cm-2 and high Curie temperature up to 425 K. Meanwhile, BCPB shows splendid bulk photovoltaic effect (BPVE) properties with noticeable zero-bias photocurrent density (5 μA cm-2 ), and high on/off switching ratio of current (over 3×105 ); these merits even overmatch the most known ferroelectric semiconductor BiFeO3 . The unique structure with self-regulated net electrical charged layers gives rise to the fatigue-free feature of Ps and BPVE (no significant fatigue after 108 polarity switching cycles), promoting the potential applications of BCPB in photovoltaic non-volatile memories. This work offers an efficient approach for exploring fatigue-free semiconducting ferroelectrics as well as excavates their further applications in next-generation electronic devices.
|
Authors | Yunpeng Yao, Yu Peng, Lina Li, Xinyuan Zhang, Xitao Liu, Maochun Hong, Junhua Luo |
Journal | Angewandte Chemie (International ed. in English)
(Angew Chem Int Ed Engl)
Vol. 60
Issue 19
Pg. 10598-10602
(May 03 2021)
ISSN: 1521-3773 [Electronic] Germany |
PMID | 33247864
(Publication Type: Journal Article)
|
Copyright | © 2020 Wiley-VCH GmbH. |