Inverted organic solar cells with ZnO thin films prepared by sol-gel method

Hye Jeong Park, Kang Hyuck Lee, Brijesh Kumar, Kyung Sik Shin, Soon Wook Jeong, Sang Woo Kim

Research output: Contribution to journalArticlepeer-review


The influences of buffer layers on the performance of hybrid solar cells that are fabricated with an active layer blend of poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-buytyric acid methyl ester (PCBM), were investigated. The ZnO thin films were used as an electron transport layer in solar cells to improve the photovoltaic performances. To explore the effects of ZnO film thickness, ZnO thin films were deposited as an electron transport layer by spin coating them one to four times at 4000 rpm using zinc acetate dehydrate that was dissolved in a mixed solution of 2-methoxyethanol and ethanolamine. We fabricated lOSCs on PES substrate, consist of Au/MoO3/PCBM:P3HT/ZnO/ ITO. The optical property of the ZnO buffer layers was investigated. Furthermore, we found the optimum ZnO buffer layer by using the sol-gel method to enhance the performance of the solar cells.

Original languageEnglish
Pages (from-to)135-138
Number of pages4
JournalJournal of Nanoelectronics and Optoelectronics
Issue number2
Publication statusPublished - 2010 Aug

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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