Photochromic and energy storage properties in K 0.5 Na 0.5 NbO 3 -based ferroelectrics
- PDF / 3,151,091 Bytes
- 16 Pages / 595.276 x 790.866 pts Page_size
- 64 Downloads / 175 Views
Photochromic and energy storage properties in K0.5Na0.5NbO3-based ferroelectrics Qiannan Jia1,2, Yong Li1,2, Lili Guan2, Haiqin Sun2, Qiwei Zhang1,2, and Xihong Hao1,2,*
1
Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China 2 Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
Received: 18 June 2020
ABSTRACT
Accepted: 8 September 2020
The coupling of photochromic properties and ferroelectrics has captured increasing interest in field of photoelectric devices. However, it is still a challenge to achieve excellent photochromic properties and energy storage performances in a ferroelectric material at the same time. Here, a novel photoelectric multifunctional material of (K0.5Na0.5)NbO3:0.05Eu is obtained. Under visible light irradiation, the sample can effectively absorb and store visible light, showing a reversible photochromic reaction. Eu3? doping well achieves the readout of visible light storage by tuning luminescence emission intensity, and the luminescent modulation ratio is up to 84%. Meanwhile, a recoverable energy storage density of 2.02 J cm-3, high energy storage efficiency of 75.4%, and fast discharge speed (80 ns) are simultaneously acquired because of Eu3? dopinginduced transition of normal ferroelectric to relaxor ferroelectric. The unique combination of photochromic properties and energy storage performances in ferroelectrics opens the door to the development of photoelectric multifunctional devices.
Ó
Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction The demand for miniaturization and integration of multifunctional electronic components is increasing due to the rapid development of advanced material science and photoelectric technology [1–11]. Optoelectronic multifunctional materials have attracted enormous attention because of assembling multiple
Address correspondence to E-mail: [email protected]
https://doi.org/10.1007/s10854-020-04463-8
ideal properties in one device for highly integrated data storage, smart sensor and signal processing [12–15]. Over the past decades, it has been found that ferroelectric oxides doped with rare-earth ions occupy an important position among the optoelectronic multifunctional materials owing to their intrinsic ferroelectric and distinctive photoluminescence properties [16–27]. Rare-earth ions doped ferroelectrics are normally composed of a host and
J Mater Sci: Mater Electron
activators. In ferroelectric hosts, a spontaneous polarization is reversed by an external electric field, resulting in the storage and release of electrical energy [28–30]. Rare-earth ions are introduced into ferroelectric oxides as activators, which endow ferroelectrics with outstanding photoluminescence properties. In our previously research results, we found that some of these rare-earth ions doped ferroe
Data Loading...
