(CdSe) ZnS core shell quantum dots decorated zinc oxide nanowires for solar energy harvesting applications

Document Type

Article

Publication Date

3-1-2011

Department

Department of Physics; Department of Mechanical Engineering-Engineering Mechanics

Abstract

ZnO nanostructures have proven to be versatile functional materials with promising electronic, piezoelectric and optical properties. Here, we report on the application of (CdSe) ZnS Core Shell quantum dots decorated ZnO Nanowires (ZnONWs) and Nanobelts (NBs) in solar energy harvesting. Results indicate that both as grown and decorated ZnO Nanostructures are photoactive, have a fast response time and generate photocurrent under excitation in a photoelectrochemical cell setup. An order of magnitude enhancement in the photocurrent response of (CdSe) ZnS Core Shell quantum dots decorated ZnONBs is seen as compared to response from as grown ZnONBs. Generated photocurrent decreases with time but stabilizes at higher value for (CdSe) ZnS Core Shell quantum dots coated ZnONBs. Detailed performances of these devices are discussed.

Publisher's Statement

© Materials Research Society 2011. Publisher's version of record: https://doi.org/10.1557/opl.2011.213

Publication Title

MRS Proceedings Online

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