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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13876

Title: Tuning the Dimensions of ZnO Nanorod Arrays for Application in Hybrid Photovoltaics
Authors: Baeten, Linny
Conings, Bert
D'Haen, Jan
De Dobbelaere, Christopher
Hardy, An
Manca, Jean V.
Van Bael, Marlies K.
Issue Date: 2012
Citation: CHEMPHYSCHEM, 13 (11), p. 2777-2783
Abstract: ZnO nanorod arrays are a very eligible option as electron acceptor material in hybrid solar cells, owing to their favorable electrical properties and abundance of available, easy, and low-cost synthesis methods. To become truly effective in this field, a major prerequisite is the ability to tune the nanorod dimensions towards optimal compatibility with electron-donating absorber materials. In this work, a water-based seeding and growth procedure is used to synthesize ZnO nanorods. The nanorod diameter is tuned either by modifying the zinc concentration of the seeding solution or by changing the concentration of the hydrothermal growth solution. The consequences of this morphological tailoring in the performance of hybrid solar cells are investigated, which leads to a new record efficiency of 0.82 % for hydrothermally grown ZnO nanorods of size 300 nm in combination with poly(3-hexylthiophene-2,5-diyl) (P3HT). This improvement is attributed to a combined effect of nanorod diameter and orientation, and possibly to a better alignment of the P3HT backbone resulting in improved charge transport.
URI: http://hdl.handle.net/1942/13876
DOI: 10.1002/cphc.201200102
ISI #: 000306900700024
ISSN: 1439-4235
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Institute for Materials Research
Materials Physics
Organic and Bio-polymer Chemistry
Laboratory of Inorganic and Physical Chemistry

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