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Control of nanocrystal surface defects for efficient charge extraction in polymer-ZnO photovoltaic systems

Han, S, Adikaari, AADT, Jayawardena, KDGI, Nismy, NA and Silva, SRP (2012) Control of nanocrystal surface defects for efficient charge extraction in polymer-ZnO photovoltaic systems Journal of Applied Physics, 112 (6). ISSN 0021-8979

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Abstract

Factors determining the photovoltaic device performance of blends of regioregular poly(3-hexylthiophene) (rr-P3HT) and ZnO nanostructures are reported. A decrease in the crystallinity of rr-P3HT upon the formation of ZnO (through hydrolysis) is observed through optical absorption spectroscopy. Increasing the humidity level for the ZnO formation leads to a decrease in the photoluminescence of the rr-P3HT:ZnO blend together with improved photovoltaic device performance. This is attributed to more efficient charge extraction due to a decrease in the radiative trap sites on the ZnO surface as a result of decreasing ZnO surface area with increasing humidity level. © 2012 American Institute of Physics.

Item Type: Article
Additional Information: Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 112 (6) and may be found at http://dx.doi.org/10.1063/1.4751432.
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Symplectic Elements
Date Deposited: 30 Nov 2012 12:19
Last Modified: 23 Sep 2013 19:50
URI: http://epubs.surrey.ac.uk/id/eprint/735788

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