UV-induced defect formation in cubic ZrO2. Optical demonstration of Y, Yb and Er dopants interacting with photocarriers

Ruslan Khabibrakhmanov, Anna Shurukhina, Aida Rudakova, Dmitrii Barinov, Vladimir Ryabchuk, Alexei Emeline, Galina Kataeva, Nick Serpone

Research output

1 Citation (Scopus)

Abstract

The UV-induced photocoloration of cubic zirconia (c-ZrO2) stabilized by Y2O3, Yb2O3 and Er2O3 and treated as a wide bandgap metal oxide (MO2) heavily doped with M3+ ions has been examined by diffuse reflectance spectroscopy. Using the narrow f-f absorption bands of optically labeled Yb3+ and Er3+ as the M3+ dopants, the interaction of these dopant ions with photocarriers is demonstrated spectroscopically against a non-resolved broadband background. The latter occurs as a result of an offset of specific f-f absorption bands following conversion of M3+ ions into optically silent M2+ ions by the trapping of photoelectrons or by a change of the local symmetry of the M3+ surroundings caused by the UV-induced formation of color centers.

Original languageEnglish
Article number137136
JournalChemical Physics Letters
Volume742
DOIs
Publication statusPublished - Mar 2020

Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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