title: Modulated Binary-Ternary Dual Semiconductor Heterostructures.
abstract: A generic modular synthetic strategy for the fabrication of a series of binary-ternary group II-VI and group I-III-VI coupled semiconductor nano-heterostructures is reported. Using Ag2 Se nanocrystals first as a catalyst and then as sacrificial seeds, four dual semiconductor heterostructures were designed with similar shapes: CdSe-AgInSe2 , CdSe-AgGaSe2 , ZnSe-AgInSe2 , and ZnSe-AgGaSe2 . Among these, dispersive type-II heterostructures are further explored for photocatalytic hydrogen evolution from water and these are observed to be superior catalysts than the binary or ternary semi-conductors. Details of the chemistry of this modular synthesis have been studied and the photophysical processes involved in catalysis are investigated.
authors.affiliation: Department of Materials Science and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata, 700032, India.
authors.forename: Gyanaranjan
authors.initials: G
authors.lastname: Prusty
authors.affiliation: Department of Materials Science and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata, 700032, India.
authors.forename: Amit K
authors.initials: AK
authors.lastname: Guria
authors.affiliation: Chemistry and Biomimetics Group, CSIR-Central Mechanical Engineering Research Institute, M.G Avenue, Durgapur-, 713209, India.
authors.forename: Indranil
authors.initials: I
authors.lastname: Mondal
authors.affiliation: Department of Materials Science and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata, 700032, India.
authors.forename: Anirban
authors.initials: A
authors.lastname: Dutta
authors.affiliation: Chemistry and Biomimetics Group, CSIR-Central Mechanical Engineering Research Institute, M.G Avenue, Durgapur-, 713209, India.
authors.forename: Ujjwal
authors.initials: U
authors.lastname: Pal
authors.affiliation: Department of Materials Science and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata, 700032, India. camnp@iacs.res.in.
authors.forename: Narayan
authors.initials: N
authors.lastname: Pradhan
keywords: binary-ternary; heterostructures; photocatalyst; tadpoles