Back to Search
Start Over
UV-induced defect formation in cubic ZrO2. Optical demonstration of Y, Yb and Er dopants interacting with photocarriers
- Source :
- Chemical Physics Letters. 742:137136
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
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.
- Subjects :
- Materials science
Diffuse reflectance infrared fourier transform
Zirconium dioxide
Dopant
Band gap
Doping
General Physics and Astronomy
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
01 natural sciences
0104 chemical sciences
Ion
chemistry.chemical_compound
chemistry
Cubic zirconia
Physical and Theoretical Chemistry
Absorption (chemistry)
0210 nano-technology
Subjects
Details
- ISSN :
- 00092614
- Volume :
- 742
- Database :
- OpenAIRE
- Journal :
- Chemical Physics Letters
- Accession number :
- edsair.doi...........dd76d60ef42c9a34df1c02b40e09c770
- Full Text :
- https://doi.org/10.1016/j.cplett.2020.137136