Controlling Interfacial Charge Transfer and Fill Factors in CuO-based Tandem Dye-Sensitized Solar Cells

Oliver Langmar, Ettore Fazio, Peter Schol, Gema de la Torre, Rubén D. Costa, Tomás Torres, Dirk M. Guldi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We designed and synthesized a series of novel electron-accepting zinc(II)phthalocyanines (ZnPc) and probed them in p-type dye sensitized solar cells (p-DSSCs) by using CuO as photocathodes. By realizing the right balance between interfacial charge separation and charge recombination, optimized fill factors (FFs) of 0.43 were obtained. With a control over fill factors in p-DSSCs in hand we turned our attemtion to t-DSSCs, in which we combined for the first time CuO-based p-DSSCs with TiO 2 -based n-DSSCs using ZnPc and N719. In the resulting t-DSSCs, the V OC of 0.86 V is the sum of those found in p- and n-DSSCs, while the FF remains around 0.63. It is only the smaller J sc s in t-DSSCs that limits the efficiency to 0.69 %.

Original languageEnglish
Pages (from-to)4056-4060
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number12
DOIs
Publication statusPublished - 2019 Mar 18
Externally publishedYes

Keywords

  • copper(II)oxide
  • dye-sensitized solar cells
  • panchromatic light absorption
  • tandem device
  • zinc(II)phthalocyanine

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Langmar, O., Fazio, E., Schol, P., de la Torre, G., Costa, R. D., Torres, T., & Guldi, D. M. (2019). Controlling Interfacial Charge Transfer and Fill Factors in CuO-based Tandem Dye-Sensitized Solar Cells. Angewandte Chemie - International Edition, 58(12), 4056-4060. https://doi.org/10.1002/anie.201812397