TY - JOUR
T1 - Electronic excitation and relaxation processes of oxygen vacancies in YSZ and their involvement in photoluminescence
AU - Morimoto, Takaaki
AU - Kuroda, Yasuhiro
AU - Ohki, Yoshimichi
N1 - Funding Information:
This research was partly conducted in the UVSOR Facility, Institute for Molecular Science, Okazaki, Japan. It was partly supported by JSPS (Japan Society for the Promotion of Science) Grant 25 3090 for JSPS Fellows.
Publisher Copyright:
© 2016, Springer-Verlag Berlin Heidelberg.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - Yttria-stabilized zirconia (YSZ) consists of zirconia and yttria and oxygen vacancies appear in accordance with the ratio of yttria. The oxygen vacancy would sometimes give annoyance, but it would be beneficial on other occasions, depending on its applications. Photoluminescence (PL) due to oxygen vacancies induced by photons with energies around 5.5 eV exhibits two decay time constants. As a possible reason for this, an oxygen vacancy changes its charging state from neutral to positive monovalent by losing an electron when YSZ is irradiated by ultraviolet photons. The PL decays either in a ms range or in a ns range, depending on whether the oxygen vacancies are neutral or positive monovalent.
AB - Yttria-stabilized zirconia (YSZ) consists of zirconia and yttria and oxygen vacancies appear in accordance with the ratio of yttria. The oxygen vacancy would sometimes give annoyance, but it would be beneficial on other occasions, depending on its applications. Photoluminescence (PL) due to oxygen vacancies induced by photons with energies around 5.5 eV exhibits two decay time constants. As a possible reason for this, an oxygen vacancy changes its charging state from neutral to positive monovalent by losing an electron when YSZ is irradiated by ultraviolet photons. The PL decays either in a ms range or in a ns range, depending on whether the oxygen vacancies are neutral or positive monovalent.
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U2 - 10.1007/s00339-016-0327-x
DO - 10.1007/s00339-016-0327-x
M3 - Article
AN - SCOPUS:84981186643
SN - 0947-8396
VL - 122
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 9
M1 - 790
ER -