Back to Search Start Over

Domain observation in the visible-light photocatalyst Bi4NbO8Br with the layered perovskite structure.

Authors :
Zhong, Chengchao
Mizushima, Daichi
Hirata, Kaito
Ishii, Yui
Kurushima, Kosuke
Kato, Daichi
Nakajima, Hiroshi
Mori, Shigeo
Suzuki, Hajime
Ogawa, Kanta
Abe, Ryu
Fukuma, Takeshi
Kageyama, Hiroshi
Source :
Applied Physics Express; Sep2020, Vol. 13 Issue 9, p1-5, 5p
Publication Year :
2020

Abstract

Layered perovskite oxyhalides Bi<subscript>4</subscript>MO<subscript>8</subscript>X (M = Nb, Ta; X = Cl, Br) are promising visible-light photocatalysts for water splitting, where the polar structure may enhance the conductivity of photocarriers. In this study, the domain structure of Bi<subscript>4</subscript>NbO<subscript>8</subscript>Br single crystal was investigated using piezoresponse force microscopy and transmission electron microscope. We observed a rare domain structure with a ferroelectric 180° domain in the nanoscale ferroelastic 90° domains developed in the ab plane. We also discuss the effect of these domain structures on the dynamics of photocarriers, which may provide new ideas for the design of highly active photocatalyst. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
18820778
Volume :
13
Issue :
9
Database :
Complementary Index
Journal :
Applied Physics Express
Publication Type :
Academic Journal
Accession number :
145622208
Full Text :
https://doi.org/10.35848/1882-0786/abb287