Nano-Scale ZnO Buffer Layer for Inkjet-Printed Polymer Solar Cells

Seung Hun Eom, S. Senthilarasu, Sung Cheol Yoon, J. Lee, Soo-Hyoung Lee

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)5113-5117
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number10
Publication statusPublished - 1 Oct 2008
Externally publishedYes


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