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- In relation to this article, we declare that there is no conflict of interest.
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Received July 31, 2014
Accepted October 13, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Synthesis of Highly Concentrated ZnO Nanorod Sol by Sol-gel Method and their Applications for Inverted Organic Solar Cells
Department of Chemical Engineering, Hanyang University, University,222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
Korean Chemical Engineering Research, June 2015, 53(3), 350-356(7), 10.9713/kcer.2015.53.3.350 Epub 2 June 2015
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Abstract
The effects of the zinc oxide (ZnO) preparing process on the performance of inverted organic photovoltaic cells (OPVs) were explored. The morphology and size of ZnO nanoparticles were controlled, leading to more efficient charge collection from device and higher electron mobility compared with nanospheres. Nanosized ZnO particles were synthesized by using zinc acetate dihydrate and potassium hydroxide in methanol. Also, water was added into the reaction medium to control the morphology of ZnO nanocrystals from spherical particles to rods, and NH4OH was used to prevent the gelation of dispersion. Solution-processed ZnO thin films were deposited onto the ITO/glass substrate by using spin coating process and then ZnO films were used as an electron transport layer in inverted organic photovoltaic cells. The analyses were carried out by using TEM, FE-SEM, AFM, DLS, UV-Vis spectroscopy, current density-voltage characteristics and solar simulator.
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Baxter JB, Schmuttenmaer CA, J. Phys. Chem. B, 110(50), 25229 (2006)
