Enhanced Hole Extraction in Perovskite Solar Cells Through Carbon Nanotubes

Journal article

Here, we report the use of polymer-wrapped carbon nanotubes as a means to enhance charge extraction through undoped spiro-OMeTAD. With this approach a good solar cell performance is achieved without the implementation of conventional doping methods. We demonstrate that a stratified two-layer architecture of sequentially deposited layers of carbon nanotubes and spiro-OMeTAD, outperforms a conventional blend of the hole-conductor and the carbon nanotubes. We also provide insights into the mechanism of the rapid hole extraction observed in the two-layer approach.

Authors: Habisreutinger, SN; Leijtens, T; Eperon, G; Stranks, S; Nicholas, R

• Publication status: Published
• Publisher: American Chemical Society
• Journal: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
• Volume: 5
• Issue: 23
• Pages: 4207-4212
• Publication date: 2014-12-04
• DOI: 10.1021/jz5021795
• EISSN: 1948-7185
• ISSN: 1948-7185
• Language: English
• Keywords: spiro-OMeTAD; hole-transporting material; perovskite solar cells; photovoltaics; single-walled carbon nanotubes