Spontaneous polarization behaviors in hybrid halide perovskite film. (June 2015)

• Record Type: Journal Article
• Authors: Zhao, Pengjun; Xu, Jinbao; Ma, Chao; Ren, Wei; Wang, Lei; Bian, Liang; Chang, Aimin
• Is Part Of: Scripta materialia. Volume 102(2015)
• Page Start: 51
• Page End: 54
• Publication Date: 2015-06
• Subjects: Spontaneous polarization -- Hybrid halide perovskite -- Plasma resonance -- Ellipsometry -- Ferroelectric domain; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.01.030
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Spontaneous polarization behaviors of hybrid perovskite CH3 NH3 PbI3 film were confirmed by in situ PFM and spectroscopic ellipsometry. The film exhibits uniform spontaneous polarization and ferroelectric domain inversion performance. The fitted dielectric constants spectra agree well with the calculated ones. We attribute the spontaneous polarization behaviors of hybrid perovskite to lone pair electrons, and its outstanding photovoltaic performance partially originates from spontaneous polarization and plasma resonance. This report will facilitate understanding of the instinct physical essence of hybrid perovskite solar cells.