A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

V. Svrcek, T. Yamanari, D Mariotti, S Mitra, T. Velusamy, K. Matsubara

Research output: Contribution to journalArticle

27 Citations (Scopus)
1 Downloads (Pure)

Abstract

Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below [similar]450 nm) into red photons (above [similar]680 nm) leading to 24% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.
Original languageEnglish
Pages (from-to)11566-11574
JournalNanoscale
Volume7
DOIs
Publication statusPublished - 2015

Keywords

  • photovoltaics
  • sliicon nanocrystals

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