Band edge shifts of p-type copper indium diselenide electrodes in aqueous electrolytes

Withana Siripala, Jacques Vedel, Daniel Lincot, David Cahen

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Impedance measurements were used to evaluate the relative band edge positions of single crystal p-CuInSe2 electrodes in various aqueous electrolytes, by measuring the extrapolated flatband potentials, Vfb. We find that Vfb can be shifted, depending on the extent of the potential scan and on the pH of the electrolyte used, over a range of up to 1.7 V (between pH 0-pH 14). In the pH range 0-6, Vfb can be fixed at intermediate values, which, in their turn, are determined by the pH of the electrolyte.

Original languageEnglish
Pages (from-to)519-521
Number of pages3
JournalApplied Physics Letters
Volume62
Issue number5
DOIs
StatePublished - 1993
Externally publishedYes

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