Colloidal quasi-one-dimensional dual semiconductor core/shell nanorod couple heterostructures with blue fluorescence

Dechao Chen; Aixiang Wang; Hongbo Li; Laura Abad Galán; Cong Su; Zongyou Yin; Massimiliano Massi; Alexandra Suvorova; Martin Saunders; Ju Li; Amit Sitt; Guohua Jia

doi:10.1039/C9NR02443C

Colloidal quasi-one-dimensional dual semiconductor core/shell nanorod couple heterostructures with blue fluorescence†

Dechao Chen,

^a Aixiang Wang,^b Hongbo Li,

^c Laura Abad Galán,

^a Cong Su,^d Zongyou Yin,

^e Massimiliano Massi,

^a Alexandra Suvorova,^f Martin Saunders,^f Ju Li,

^d Amit Sitt*^g and Guohua Jia

*^a

Author affiliations

* Corresponding authors

^a Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, WA 6845, Australia
E-mail: guohua.jia@curtin.edu.au

^b School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, China

^c School of Materials Science and Engineering, Beijing Institute of Technology, Haidian District, Beijing 100081, China

^d Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

^e Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory 2601, Australia

^f Centre for Microscopy, Characterization and Analysis (CMCA) and School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia

^g Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry Tel Aviv University, Tel Aviv 6997801, Israel
E-mail: amitsitt@tauex.tau.ac.il

Abstract

Herein we report a nanorod couple heterostructure made of dual semiconductors, in which two parallelly aligned ZnSe nanorods are connected by the growth of ZnS on both end and side facets, producing hetero-ZnS (short arms)–ZnSe (long arms)/ZnS shell nanorod couples. As evidenced by electronic structure studies, both experimental and theoretical, such core/shell nanorod couple heterostructures can act as a platform to precisely tailor the quantum confinement of charge carriers between the constituting components within a single nano-object, generating blue fluorescence after the overgrowth of an alloyed ZnCdS layer on the heterostructures. We foresee the mechanistic insights gained and electronic structures revealed in this work would shed light on the rational design of more complex heterostructures with novel functionalities.

Nanoscale

Colloidal quasi-one-dimensional dual semiconductor core/shell nanorod couple heterostructures with blue fluorescence†

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Colloidal quasi-one-dimensional dual semiconductor core/shell nanorod couple heterostructures with blue fluorescence

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