Simple and Rapid One-Step Electrochemical Synthesis of Nanogranular Cu2O Films

Diego P. Oyarzún, Martín I. Broens, Omar E. Linarez Pérez, Manuel López Teijelo, Rafael Islas, Ramiro Arratia-Perez

Research output: Contribution to journalArticle

Abstract

In the present work, we report a simple experimental strategy for the one-step electrochemical synthesis of nanogranular Cu2O films by copper anodization in fluoride-containing ethylene glycol media. Microscopic exploration using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and transmission electron microscopy (TEM), shows the formation of spherical shape grains with sizes ranging from 20 to 40 nm. Raman and X-Ray Photoemission Spectroscopy (XPS) results indicate that only CuI oxide is obtained. A band gap energy Eg=2.01 eV is estimated from UV–vis reflectance spectroscopy indicating that an indirect transition mechanism between semiconductor bands takes place. These evidences indicate that the present synthesis of nanogranular Cu2O films is a promising method for obtaining improved properties of materials for the design of photoelectronic devices.

Original languageEnglish
Pages (from-to)8610-8614
Number of pages5
JournalChemistrySelect
Volume3
Issue number30
DOIs
Publication statusPublished - 14 Aug 2018

Keywords

  • anodic CuO
  • electrosynthesis
  • ethylene glycol media
  • materials science
  • nanostructures

ASJC Scopus subject areas

  • Chemistry(all)

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