LiNbO<sub>3</sub>:Pr<sup>3+</sup>: A Multipiezo Material with Simultaneous Piezoelectricity and Sensitive Piezoluminescence
Dong TuNational Institute of Advanced Industrial Science and Technology (AIST) Saga 841‐0052 JapanChao‐Nan XuInterdisciplinary Graduate School of Engineering Sciences Kyushu University Fukuoka 816‐8580 JapanAkihito YoshidaNational Institute of Advanced Industrial Science and Technology (AIST) Saga 841‐0052 JapanMasayoshi FujihalaNational Institute of Advanced Industrial Science and Technology (AIST) Saga 841‐0052 JapanJou HirotsuInterdisciplinary Graduate School of Engineering Sciences Kyushu University Fukuoka 816‐8580 Japan旭光 鄭Department of Physics Graduate School of Science and Engineering Saga University Saga 840‐8502 Japan
2017en
ABI
Аннотация
Red‐emitting piezoluminescence (elasticoluminescence) is achieved by doping rare earth Pr 3+ into the well‐known piezoelectric matrix, LiNbO 3 . By precisely tuning the Li/Nb ratio in nonstoichiometric Li x NbO 3 :Pr 3+ , a material that exhibits an unusually high piezoluminescence intensity, which far exceeds that of any well‐known piezoelectric material, is produced. Li x NbO 3 :Pr 3+ shows excellent strain sensitivity at the lowest strain level, with no threshold for stress sensing. These multipiezo properties of sensitive piezoluminescence in a piezoelectric matrix are ideal for microstress sensing, damage diagnosis, electro‐mechano‐optical energy conversion, and multifunctional control in optoelectronics.
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