A Semiconducting Organic–Inorganic Hybrid Perovskite‐type Non‐ferroelectric Piezoelectric with Excellent Piezoelectricity. Issue 7 (12th March 2019)

• Record Type: Journal Article
• Authors: Zhang, Yao‐Zu; Sun, Dong‐Sheng; Gao, Ji‐Xing; Hua, Xiu‐Ni; Chen, Xiao‐Gang; Mei, Guang‐Quan; Liao, Wei‐Qiang
• Is Part Of: Chemistry, an Asian journal. Volume 14:Issue 7(2019)
• Page Start: 1028
• Page End: 1033
• Publication Date: 2019-03-12
• Subjects: band gap -- non-ferroelectric piezoelectric -- organic-inorganic hybrid composites -- phase transition -- semiconductors; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201801921
• Languages: English
• ISSNs: 1861-4728

Abstract

Abstract: Piezoelectric materials are a class of important functional materials applied in high‐voltage sources, sensors, vibration reducers, actuators, motors, and so on. Herein, [(CH3 )3 S]3 [Bi2 Br9 ](1 ) is a brilliant semiconducting organic–inorganic hybrid perovskite‐type non‐ferroelectric piezoelectric with excellent piezoelectricity. Strikingly, the value of the piezoelectric coefficient d 33 is estimated as ≈18 pC N −1 . Such a large piezoelectric coefficient in non‐ferroelectric piezoelectric has been scarcely reported and is comparable with those of typically one‐composition non‐ferroelectric piezoelectrics such as ZnO (3pC N −1 ) and much greater than those of most known typical materials. In addition, 1 exhibits semiconducting behavior with an optical band gap of ≈2.58 eV that is lower than the reported value of 3.37 eV for ZnO. This discovery opens a new avenue to exploit molecular non‐ferroelectric piezoelectric and should stimulate further exploration of non‐ferroelectric piezoelectric due to their high stability and low loss characteristics. Abstract : As easy as pie : A semiconducting organic–inorganic hybrid perovskite‐type non‐ferroelectric piezoelectric with excellent piezoelectricity is reported. The value of the piezoelectric coefficient d 33 is estimated as ≈18 pC N −1 . Such a large piezoelectric coefficient in non‐ferroelectric piezoelectric has been scarcely reported. Furthermore, [(CH3 )3 S]3 [Bi2 Br9 ] exhibits semiconducting behavior with an optical band gap of ≈2.58 eV.