Deposition of hole-transport materials in solid-state dye-sensitized solar cells by doctor-blading

I-Kang Ding, John Melas-Kyriazi, Ngoc-Le Cevey-Ha, Kethinni G. Chittibabu, Shaik M. Zakeeruddin, Michael Grätzel, Michael D. McGehee

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83 Scopus citations

Abstract

We report using doctor-blading to replace conventional spin coating for the deposition of the hole-transport material spiro-OMeTAD (2,20,7,70-tetrakis-(N, N-di-p-methoxyphenylamine)- 9,90-spirobifluorene) in solid-state dye-sensitized solar cells. Doctor-blading is a roll-to-roll compatible, large-area coating technique, is capable of achieving the same spiro-OMeTAD pore filling fraction as spin coating, and uses much less material. The average power conversion efficiency of solid-state dye-sensitized solar cells made from doctorblading is 3.0% for 2-lm thick films and 2.0% for 5-lm thick films, on par with devices made with spin coating. Directions to further improve the filling fraction are also suggested. © 2010 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)1217-1222
Number of pages6
JournalOrganic Electronics
Volume11
Issue number7
DOIs
StatePublished - Jul 2010
Externally publishedYes

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