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Novel AgNbO3-based lead-free ceramics featuring excellent pyroelectric properties for infrared detecting and energy-harvesting applications via antiferroelectric/ferroelectric phase-boundary design
Li, Song; Nie, Hengchang; Wang, Genshui; Liu, Ningtao; Zhou, Mingxing; Cao, Fei; Dong, Xianlin
2019-04-21
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
Volume7Issue:15Pages:4403
SubtypeArticle
AbstractAgNbO3 is considered as one of the most promising alternatives for lead-containing antiferroelectric (AFE) ceramics, and has been drawing progressively more attention. The AFE/ferroelectric (FE) phase-boundary design based on AgNbO3 is very attractive and is a promising means to develop lead-free high-performance pyroelectric materials. In the present study, compounds with a high tolerance factor and high average electronegativity difference and LiNbO3-type composition were proposed as being able to stabilize the FE phase of AgNbO3. Ceramics with the composition (1 - x)AgNbO3-xLiTaO(3) (ANLT) (x = 0-0.10) were designed and fabricated using the conventional solid-state method for pyroelectric applications. The effects of the LiTaO3 content, temperature, and electric field on the phase-transition behavior of the ANLT system were investigated systematically. Based on our results, a composition-temperature phase diagram of the ANLT system was proposed, confirming the existence of the AFE/FE phase boundary. The depolarization and pyroelectric properties of the ANLT system were also studied. It was found that the x = 0.05 composition at the AFE/FE phase boundary had a large room-temperature pyroelectric coefficient (3.68 10(-8) C cm(-2) K-1) and exhibited excellent figures of merit for infrared detectors due to its low relative permittivity (252 at 1 kHz). Moreover, an ultrahigh pyroelectric energy density (1.4 J cm(-3)) was harvested using an Olsen cycle for the x = 0.5 composition, which was several times larger than that of other ceramic systems reported recently. These results suggest the ANLT ceramic would be an attractive multifunctional material for applications in infrared detectors and energy harvesting.
DOI10.1039/c9tc01014a
Language英语
WOS Research AreaMaterials Science ; Physics
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27170
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, Song,Nie, Hengchang,Wang, Genshui,et al. Novel AgNbO3-based lead-free ceramics featuring excellent pyroelectric properties for infrared detecting and energy-harvesting applications via antiferroelectric/ferroelectric phase-boundary design[J]. JOURNAL OF MATERIALS CHEMISTRY C,2019,7(15):4403.
APA Li, Song.,Nie, Hengchang.,Wang, Genshui.,Liu, Ningtao.,Zhou, Mingxing.,...&Dong, Xianlin.(2019).Novel AgNbO3-based lead-free ceramics featuring excellent pyroelectric properties for infrared detecting and energy-harvesting applications via antiferroelectric/ferroelectric phase-boundary design.JOURNAL OF MATERIALS CHEMISTRY C,7(15),4403.
MLA Li, Song,et al."Novel AgNbO3-based lead-free ceramics featuring excellent pyroelectric properties for infrared detecting and energy-harvesting applications via antiferroelectric/ferroelectric phase-boundary design".JOURNAL OF MATERIALS CHEMISTRY C 7.15(2019):4403.
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