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Proceedings Paper

Zinc oxide nanowire arrays for photovoltaic and light-emitting devices
Author(s): Bita Janfeshan; Bahareh Sadeghimakki; Navid M. S. Jahed; Siva Sivoththaman
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Paper Abstract

Knowledge of carrier transfer, in quantum dot sensitized solar cells, is the key to engineering the device structure and architecture optimization. In this work, Zinc oxide (ZnO) nanowire (NW) arrays were synthesized on glass wafers and on GaN thin films for application in photovoltaic and light-emitting devices. The nanowires grown on glass wafers were incorporated with CdSe/ZnS quantum dots (QD) and their steady state and lifetime photoluminescence (PL) were studied to investigate the feasibility of electron transfer from excited QDs to ZnO NWs. The results provide an indication that the injected electrons, from excited high quantum efficiency QDs, live longer and hence facilitate electron transport without undergoing non-radiative recombination at surface trap states. Morphology and optical properties of the ZnO nanowires on GaN film were also studied for application in light-emitting devices.

Paper Details

Date Published: 25 March 2013
PDF: 9 pages
Proc. SPIE 8620, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II, 86201Z (25 March 2013); doi: 10.1117/12.2004601
Show Author Affiliations
Bita Janfeshan, Univ. of Waterloo (Canada)
Bahareh Sadeghimakki, Univ. of Waterloo (Canada)
Navid M. S. Jahed, Univ. of Waterloo (Canada)
Siva Sivoththaman, Univ. of Waterloo (Canada)

Published in SPIE Proceedings Vol. 8620:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II
Alexandre Freundlich; Jean-Francois Guillemoles, Editor(s)

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