Removal of copper vacancies in cuprous oxide single crystals grown by the floating zone method

Kelvin B. Chang, Laszlo Frazer, Johanna J. Schwartz, John B. Ketterson, Kenneth R Poeppelmeier

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Single crystals of cuprous oxide (Cu2O) with minimal defects were grown using the optical floating zone technique. Copper vacancies were removed through the promotion of CuO precipitation within the bulk Cu 2O crystal following the reaction CuCu Cu2O + VCu Cu2O + OO Cu2O → Cu Cu CuO + OO CuO. This reaction was promoted through the use of high purity samples and by growing crystals under an oxidizing atmosphere. Although an increase in the oxygen concentration of the atmosphere will initially increase the oxygen to copper ratio, the excess oxygen in the final Cu2O crystal is ultimately decreased through the formation of CuO as the crystal cools. Copper vacancies were reduced further, and the CuO phase was eventually removed from the Cu2O crystal when thin slices of the crystal were annealed.

Original languageEnglish
Pages (from-to)4914-4922
Number of pages9
JournalCrystal Growth and Design
Volume13
Issue number11
DOIs
Publication statusPublished - Nov 6 2013

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floating
Vacancies
Copper
Single crystals
copper
Crystals
Oxides
oxides
single crystals
crystals
Oxygen
oxygen
atmospheres
Crystal growth
promotion
cuprous oxide
purity
Defects
defects

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Removal of copper vacancies in cuprous oxide single crystals grown by the floating zone method. / Chang, Kelvin B.; Frazer, Laszlo; Schwartz, Johanna J.; Ketterson, John B.; Poeppelmeier, Kenneth R.

In: Crystal Growth and Design, Vol. 13, No. 11, 06.11.2013, p. 4914-4922.

Research output: Contribution to journalArticle

Chang, Kelvin B. ; Frazer, Laszlo ; Schwartz, Johanna J. ; Ketterson, John B. ; Poeppelmeier, Kenneth R. / Removal of copper vacancies in cuprous oxide single crystals grown by the floating zone method. In: Crystal Growth and Design. 2013 ; Vol. 13, No. 11. pp. 4914-4922.
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