title: Metal tips on pyramid-shaped PbSe/CdSe/CdS heterostructure nanocrystal photocatalysts: study of Ostwald ripening and core/shell formation.
abstract: We report ripening of metal particles anchored on pyramid-shaped heterostructure nanocrystals. The 'intra-particle' ripening results in a large metal tip at one corner with the other three tips vanishing. Investigation reveals that the ripening and core/shell formation affects photocatalytic activities via the Fermi level change.
authors.affiliation: Department of Chemical and Biomolecular Engineering, KAIST Institute for the Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea. dclee@kaist.edu.
authors.forename: Whi Dong
authors.initials: WD
authors.lastname: Kim
authors.forename: Sooho
authors.initials: S
authors.lastname: Lee
authors.forename: Chaewon
authors.initials: C
authors.lastname: Pak
authors.forename: Ju Young
authors.initials: JY
authors.lastname: Woo
authors.forename: Kangha
authors.initials: K
authors.lastname: Lee
authors.forename: Fábio
authors.initials: F
authors.lastname: Baum
authors.forename: Jonghan
authors.initials: J
authors.lastname: Won
authors.forename: Doh C
authors.initials: DC
authors.lastname: Lee