Nano-Scale ZnO Buffer Layer for Inkjet-Printed Polymer Solar Cells
Authors: Eom, Seung Hun; Senthilarasu, S.; Yoon, Sung Cheol; Lee, J.; Lee, Soo-Hyoung
Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 10, October 2008 , pp. 5113-5117(5)
Publisher: American Scientific Publishers
Abstract:Zinc oxide (ZnO) was used as a buffer layer in the fabrication of polymer solar cells with the configuration of ITO/PEDOT:PSS/P3HT:PCBM/ZnO/Ag, in which the Ag cathode was prepared by inkjet printing using silver ink. Due to the hydrophobic nature of the P3HT:PCBM active layer surface, the hydrophilic silver ink cannot be coated directly on the top of the P3HT:PCBM layer. To overcome this problem, ZnO particles, prepared in a simple solution method by using polyethylene glycol (PEG) surfactant molecules, were used as a buffer layer between the P3HT:PCBM layer and Ag cathode. The present study discusses and compares the performance of the solar cells with and without the ZnO buffer layer.
Document Type: Research Article
Publication date: October 1, 2008
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