Polymer Tandem Solar Cell Having $TiO_2$ Nanoparticle Interlayer

  • Chung, Won-Suk (Materials Science and Technology Division Solar cell Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Lee, Hyun-Jung (Materials Science and Technology Division Solar cell Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Lee, Won-Mok (Department of Chemistry, Sejong University) ;
  • Ko, Min-Jae (Materials Science and Technology Division Solar cell Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Park, Nam-Gyu (Materials Science and Technology Division Solar cell Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Ju, Byeong-Kwon (Display and Nanosystem Lab, College of Engineering, Korea University) ;
  • Kim, Kyung-Kon (Materials Science and Technology Division Solar cell Research Center, Korea Institute of Science and Technology (KIST))
  • Published : 2009.10.12

Abstract

A solution processed polymer tandem cell has been fabricated by using the organic layer coated crystalline $TiO_2$ nanoparticle inter layer. The highly dispersive OL-$TiO_2$ has several advantages in terms of excellent film forming property, crystallinity, optical transparency, and well defined chemical composition. The surface morphology of the $TiO_2$ thin film was found to play a crucial role in the performance of the polymer tandem cell. The stability of the tandem cell, utilizing dense $TiO_2$ nanoparticles inter layer, was superior to the stability of the single junction cell.

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