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Hybrid Solar Cells with Polymer/Fullerene Bulk Heterojunction Layers Containing in-situ Synthesized CdS Nanocrystals

  • Kwak, Eunjoo (Organic Nanoelectronics Laboratory, School of Applied Chemical Engineering, Kyungpook National University) ;
  • Woo, Sungho (Organic Nanoelectronics Laboratory, School of Applied Chemical Engineering, Kyungpook National University) ;
  • Kim, Hwajeong (Organic Nanoelectronics Laboratory, School of Applied Chemical Engineering, Kyungpook National University) ;
  • Kim, Youngkyoo (Organic Nanoelectronics Laboratory, School of Applied Chemical Engineering, Kyungpook National University)
  • Received : 2014.11.03
  • Accepted : 2014.11.06
  • Published : 2014.12.31

Abstract

We report hybrid solar cells fabricated with polymer/fullerene bulk heterojunction layers that contain inorganic nanocrystals synthesized by in-situ reaction in the presence of polymer chains. The inorganic (cadmium sulfide) nanocrystal ($CdS_{NC}$) was generated by the reaction of cadmium acetate and sulfur by varying the reaction time up to 30 min. The synthesized $CdS_{NC}$ showed a rectangular flake shape, while the size of $CdS_{NC}$ reached ca. 150 nm when the reaction time was 10 min. The performance of hybrid solar cells with $CdS_{NC}$ synthesized for 10 min was better than that of a control device, whereas poor performances were measured for other hybrid solar cells with $CdS_{NC}$ synthesized for more than 10 min.

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