Enhancing the device performance of Sb 2S 3-sensitized heterojunction solar cells by embedding Au nanoparticles in the hole-conducting polymer layer

Choong Sun Lim, Sang Hyuk Im, Hi Jung Kim, Jeong Ah Chang, Yong Hui Lee, Sang Il Seok

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Performance of Sb 2S 3-sensitized heterojunction solar cells is enhanced by embedding Au nanoparticles in the poly-3-hexylthiophene (P3HT) hole-conducting polymer layer. The improved charge transfer/transport at the Sb 2S 3/P3HT/Au interface by extended interface area of the P3HT/Au counter electrode and the re-absorption of the backscattering light from the embedded Au nanoparticles enhanced the device performance: J sc 11.0 to 12.8 mA cm -2, V oc 606 to 626 mV, fill factor (FF) 60.5 to 61.2%, and power conversion efficiency (η) 4.0 to 4.9%. Simultaneous enhancement of V oc, J sc, and FF in Au nanoparticle-embedded systems is mainly attributed to the improved charge collection efficiency and light harvesting efficiency of Sb 2S 3 due to the improved charge transfer/transport in the Sb 2S 3/P3HT/Au interface.

Original languageEnglish
Pages (from-to)3622-3626
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume14
Issue number10
DOIs
Publication statusPublished - 2012 Mar 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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