Ce3+ Centres in YAlO_3 (YAP) Single Crystals

Tetsuhiko Tomoki; Hirokatsu Ishikawa; Tomoji Tashiro; Moritaka Katsuren; Akira Yonesu; Tatsuya Hotta; Tsuyoshi Yabiku; Michihiro Akamine; Tomoyoshi Futemma; Tsuyoshi Nakaoka; Isamu Miyazato

doi:10.1143/jpsj.64.4442

Ce³⁺ Centres in YAlO_3 (YAP) Single Crystals

Tetsuhiko Tomoki, Hirokatsu Ishikawa, Tomoji Tashiro, Moritaka Katsuren, Akira Yonesu, Tatsuya Hotta, Tsuyoshi Yabiku, Michihiro Akamine, Tomoyoshi Futemma, Tsuyoshi Nakaoka, Isamu Miyazato

Author information

Tetsuhiko Tomoki
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Hirokatsu Ishikawa
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Tomoji Tashiro
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Moritaka Katsuren
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Akira Yonesu
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Tatsuya Hotta
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Tsuyoshi Yabiku
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Michihiro Akamine
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Tomoyoshi Futemma
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Tsuyoshi Nakaoka
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01
Isamu Miyazato
Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903–01

Keywords: optical absorption, emission and excitation spectra of Ce³⁺ ofYAP:Ce³⁺, the air and vacuum UV regions

JOURNAL RESTRICTED ACCESS

1995 Volume 64 Issue 11 Pages 4442-4449

DOI https://doi.org/10.1143/jpsj.64.4442

Details

Abstract

Spectra of optical absorption (3 eV -- 6 eV) and emission(2.9 eV -- 4.1 eV) have been investigated onCe³⁺ centres inYAlO₃:Ce³⁺ single crystals at 297 K; excitation spectrum for360 nm light in the Ce³⁺ emission band region has also beenmeasured in the region of 3.5 eV -- 6.2 eV. Measurement ofexcitation spectrum for Ce³⁺ centres in YAlO₃:Ce³⁺ powderphosphor has been made at room temperature in the region of 3 eV--11 eV. The excitaticn spectra in the air UV region consist of fivebands assignable to the five levels of the Ce³⁺ 5d; they areexpressible by Gaussian functions, respectively, and therefrom thecrystalline field splitting 10Dq=1.12₈ eV is derived. Theexcitation spectrum in the VUV region has a great peak at 8.05 eVwhich originates from the valence-band excitons. It is confirmed thatthe luminescence band expressed in terms of quanta per unitphoton-energy interval can be fitted by two Gaussian components.

Corresponding author

Register with J-STAGE for free!