N-Type Cu2O by electrochemical doping with Cl

Xiaofei Han, Kunhee Han, Meng Tao

Research output: Contribution to journalArticle

44 Scopus citations

Abstract

Cuprous oxide (Cu2O) is naturally p-type, which has prevented an efficient Cu2O solar cell. n-Type doping of Cu2O is demonstrated during electrochemical deposition by adding a chlorine (Cl) precursor to the aqueous solution. Current-voltage characterization reveals that the resistivity of undoped Cu2O by electrochemical deposition is ∼40 M ωcm, while that of electrochemically doped Cu2O with Cl is significantly reduced to as low as ∼7 ω cm. X-ray diffraction confirms that the films are pure Cu2O. Photocurrent measurements verify that Cl-doped Cu2O is n-type. The solution-based doping method is particularly suitable for low-cost, large-area, and high-throughput fabrication of Cu2O solar cells.

Original languageEnglish (US)
Pages (from-to)H89-H91
JournalElectrochemical and Solid-State Letters
Volume12
Issue number4
DOIs
StatePublished - Feb 24 2009
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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