| Literature DB >> 26147488 |
Jian Zhu1,2, Fengtao Fan1, Ruotian Chen1,2, Hongyu An1,2, Zhaochi Feng1, Can Li3.
Abstract
Spatially resolved surface photovoltage spectroscopy (SRSPS) was employed to obtain direct evidence for highly anisotropic photogenerated charge separation on different facets of a single BiVO4 photocatalyst. Through the controlled synthesis of a single crystal with preferentially exposed {010} facets, highly anisotropic photogenerated hole transfer to the {011} facet of single BiVO4 crystals was observed. The surface photovoltage signal intensity on the {011} facet was 70 times stronger than that on the {010} facets. The influence of the built-in electric field in the space charge region of different facets on the anisotropic photoinduced charge transfer in a single semiconductor crystal is revealed.Entities:
Keywords: charge carrier injection; charge separation; crystal engineering; imaging; photocatalysis
Year: 2015 PMID： 26147488 DOI： 10.1002/anie.201504135
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN： 1433-7851 Impact factor: 15.336