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http://dx.doi.org/10.9713/kcer.2015.53.3.350

Synthesis of Highly Concentrated ZnO Nanorod Sol by Sol-gel Method and their Applications for Inverted Organic Solar Cells  

Kim, Solee (Department of Chemical Engineering, Hanyang University)
Kim, Young Chai (Department of Chemical Engineering, Hanyang University)
Oh, Seong-Geun (Department of Chemical Engineering, Hanyang University)
Publication Information
Korean Chemical Engineering Research / v.53, no.3, 2015 , pp. 350-356 More about this Journal
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 $NH_4OH$ 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.
Keywords
Inverted Organic Photovoltaics; ZnO Thin Films; Morphology Control; Sol-Gel Method;
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Times Cited By KSCI : 2  (Citation Analysis)
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